Page 1 Release Notes for the Cisco ASR 903 Router November 21, 2013 Cisco Systems, Inc. www.cisco.com Cisco has more than 200 offices worldwide. Addresses, phone numbers, and fax numbers are listed on the Cisco website at www.cisco.com/go/offices. Text Part Number: OL-26630-08...
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Page 3: Table Of Contents
New Software Features in Cisco IOS XE Release 3.7(3)S New Software Features in Cisco IOS XE Release 3.7(2)S New Software Features in Cisco IOS XE Release 3.7(1)aS Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 4 Access Switch Device Manager Template Auto-IP BFD Debug Enhancement Bidirectional Forwarding Detection Deterministic Hardware Offload Broadcast and Multicast Suppression IGMP Snooping Licensing the OC-3 and OC-12 Interface Modules Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 5 Open Caveats—Cisco IOS XE Release 3.6(1)S 2-11 Resolved Caveats—Cisco IOS XE Release 3.6(1)S 2-13 Open Caveats—Cisco IOS XE Release 3.6(0)S 2-17 Resolved Caveats—Cisco IOS XE Release 3.6(0)S 2-28 Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 6 Caveats in Cisco IOS XE 3.9S Releases Open Caveats—Cisco IOS XE Release 3.9(2)S Resolved Caveats—Cisco IOS XE Release 3.9(2)S Open Caveats—Cisco IOS XE Release 3.9(1a)S 5-13 Resolved Caveats—Cisco IOS XE Release 3.9(1a)S 5-17 Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 7 Restrictions and Caveats in Cisco IOS XE 3.11 Releases C H A P T E R Caveats in Cisco IOS XE 3.10S Releases Open Caveats—Cisco IOS XE Release 3.11S Resolved Caveats—Cisco IOS XE Release 3.11S Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 8 Contents Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 9: Release Notes For The Cisco Asr 903 Router
For information about Cisco IOS Release 3.5, see the Release Notes for Cisco IOS XE Release Note The following sections provide an overview of the Cisco ASR 903 Router and Cisco IOS XE releases: Cisco ASR 903 Router Overview, page 1-1 •...
Page 10: Feature Navigator
• Upgrading to a New Software Release Only Cisco IOS XE 3S consolidated packages can be downloaded from Cisco.com; users who want to run the router using individual subpackages must first download the image from Cisco.com and extract the individual subpackages from the consolidated package.
Page 11: Supported Rommon Versions
Chapter Supported ROMmon Versions For information about upgrading to a new software release, see the Cisco ASR 903 Router Chassis Software Configuration Guide at http://www.cisco.com/en/US/docs/routers/asr903/software/guide/chassis/Release3.7.0S/ASR903-Chas sis-SW-39.html. Supported ROMmon Versions 15.3(2r)S is the recommended ROMmon version for IOS XE 3.5, 3.6, 3.7, 3.8, and 3.9 software releases.
Page 12: Mib Support
Chapter MIB Support MIB Support This section describes the MIB support on the Cisco ASR 903 Router. Table 1-1 summarizes the supported MIBs on the Cisco ASR 903 Router: • Table 1-1 Supported MIBs Supported MIBs BGP4-MIB (RFC 1657) CISCO-IMAGE-LICENSE-MGMT-...
Page 13 IP-MIB (RFC 4293) UDP-MIB (RFC 4113) CISCO-IF-EXTENSION-MIB IPMROUTE-STD-MIB (RFC 2932) CISCO-IGMP-FILTER-MIB MPLS-LDP-GENERIC-STD-MIB (RFC 3815) Table 1-2 summarizes the unverified and supported MIBs on the Cisco ASR 903 Router. Table 1-2 Unverified and Supported MIBs Unverified MIBs ATM-MIB CISCO-IETF-DHCP-SERVER-EXT-MI EXPRESSION-MIB CISCO-ATM-EXT-MIB...
Page 14: Mib Documentation
Cisco.com by following the directions found at the following location: http://tools.cisco.com/RPF/register/register.do Open Source License Notices For a listing of the license notices for open source software used in Cisco IOS XE 3S Releases, see the documents accessible from the License Information page at the following location: http://www.cisco.com/en/US/products/ps11174/products_licensing_information_listing.html...
Page 15: New Features In Cisco Ios Xe 3.6S Releases
New Software Features in Cisco IOS XE Release 3.6S, page 4 • New Hardware Features in Cisco IOS XE Release 3.6(2)S The IOS XE 3.6(2)S Release for the Cisco ASR 903 Router does not introduce any new hardware features. New Hardware Features in Cisco IOS XE Release 3.6(1)S The IOS XE 3.6(1)S Release for the Cisco ASR 903 Router does not introduce any new hardware...
Page 16: New Software Features In Cisco Ios Xe Release 3.6(2)S
R903-Chassis-SW-36.html New Software Features in Cisco IOS XE Release 3.6(2)S The IOS XE 3.6(2)S Release for the Cisco ASR 903 Router does not introduce any new software features. New Software Features in Cisco IOS XE Release 3.6(1)S The following are the new software features introduced in Cisco IOS XE Release 3.6(1)S: •...
Page 17 Reverse Path Forwarding failure handling—This release introduces support for the platform • multicast rpf_fail_handling enable command. The Cisco ASR 903 Router hardware does not handle RPF fail packets default; you can use this command to enable RPF fail packets handling.
Page 18: New Software Features In Cisco Ios Xe Release 3.6S
New Software Features in Cisco IOS XE Release 3.6S The following are the new software features introduced in Cisco IOS XE Release 3.6S: Many of the features supported on the Cisco ASR 903 Router require a license for use. For more Note...
Page 19 • configure traffic policies (policy maps), and attach those traffic policies to interfaces. The Cisco ASR 903 Router supports classification of IPv6 traffic based on DSCP or Precedence values on ingress and egress interfaces. For details about this feature, see http://www.cisco.com/en/US/docs/ios-xml/ios/ipv6/configuration/xe-3s/ip6-qos.html...
Page 20 Static VPLS over MPLS-TP—This feature introduces support for static VPLS over MPLS-TP. For details about this feature, see http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-bfd.html STM-1 support—This feature adds support for STM1 mode on Cisco ASR 903 Router in • concatenated and channelized mode to the DS1 level. For details about this feature, see http://www.cisco.com/en/US/docs/wireless/asr_900/software/guide/chassis/Release3.6.0S/ASR90...
Page 21 ITU-T Y-1731 specification and interpreted by the Metro Ethernet Forum (MEF) standards group. For details about this feature, see: – http://www.cisco.com/en/US/docs/ios-xml/ios/cether/configuration/xe-3s/ce-y1731-perfmon.ht – http://www.cisco.com/en/US/docs/ios/cether/configuration/guide/ce_y1731-perfmon.html Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 22 Chapter New Software Features in Cisco IOS XE Release 3.6S Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 23: New Features In Cisco Ios Xe 3.7S Releases
New Software Features in Cisco IOS XE Release 3.7(0)S, page 2 New Hardware Features in Cisco IOS XE Release 3.7(4)S The IOS XE 3.7(4)S Release for the Cisco ASR 903 Router does not introduce any new hardware features. New Hardware Features in Cisco IOS XE Release 3.7(3)S The IOS XE 3.7(3)S Release for the Cisco ASR 903 Router does not introduce any new hardware...
Page 24: New Hardware Features In Cisco Ios Xe Release 3.7(2)S
New Hardware Features in Cisco IOS XE Release 3.7(2)S New Hardware Features in Cisco IOS XE Release 3.7(2)S The IOS XE 3.7(2)S Release for the Cisco ASR 903 Router does not introduce any new hardware features. New Hardware Features in Cisco IOS XE Release 3.7(1)aS The IOS XE 3.7(1)aS Release for the Cisco ASR 903 Router introduces the following hardware features:...
Page 25 GOLD—Generic Online Diagnostic (GOLD) is a health monitoring feature implemented on the • Cisco ASR 903 Router. The GOLD functionality is developed to provide online diagnostic capabilities that run at bootup, in the background on a periodic basis, or based on demand from the CLI.
Page 26 (for example, voice) on the outbound link before delay-insensitive traffic. As a result, high-priority traffic receives the lowest latency possible on the router. For more information, see: Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 27 For more information, see http://www.cisco.com/en/US/docs/routers/asr903/software/guide/chassis/Release3.7.0S/ASR903- Chassis-SW-37.html. Time of Day Selection—You can use the time of day (ToD) and 1PPS ports on the Cisco ASR 903 • Series Router to exchange ToD clocking. In master mode, the router can receive time of day (ToD) clocking from an external GPS unit;...
Page 28 Chapter New Software Features in Cisco IOS XE Release 3.7(0)S Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 29: Chapter 4 New Features In Cisco Ios Xe 3.8S Releases
New Software Features in Cisco IOS XE Release 3.8(0)S, page 2 • New HardwareFeatures in Cisco IOS XE Release 3.8(2)S The IOS XE 3.8(2)S Release for the Cisco ASR 903 Router does not introduce any new hardware features. New Hardware Features in Cisco IOS XE Release 3.8(1)S The IOS XE 3.8(1)S Release for the Cisco ASR 903 Router does not introduce any new hardware...
Page 30: New Softwarefeatures In Cisco Ios Xe Release 3.8(2)S
.html New SoftwareFeatures in Cisco IOS XE Release 3.8(2)S The IOS XE 3.8(2)S Release for the Cisco ASR 903 Router does not introduce any new software features. New Software Features in Cisco IOS XE Release 3.8(1)S Release 3.8(1) introduces support for the following software features: uRPF Loose Mode—This release introduces support for Unicast Reverse Path Forwarding (uRPF)
Page 31 MPLS-VPN feature creates and stores a backup/alternate path in the routing information base (RIB), forwarding information base (FIB), and Cisco Express Forwarding so that when a failure is detected, the backup/alternate path can immediately take over, thus enabling fast failover. For more information, see http://www.cisco.com/en/US/partner/docs/ios-xml/ios/iproute_bgp/configuration/xe-3s/asr903/irg-...
Page 32 Release 3.8 enhances the show policy-map interface command to display the default – queue-limit. For more information about the Release 3.8 QoS features, see the QoS chapter of the Cisco ASR 903 Chassis Configuration Guide, Release 3.8. SONET Mode—This release introduces support for SONET mode on the OC-3 interface module.
Page 33 Connections on the Cisco ASR 903 Router. • Y.1731 enhancements—This release introduces support for Y.1731 on-demand and concurrent features. For more information about this feature, see http://www.cisco.com/en/US/partner/docs/ios-xml/ios/cether/configuration/xe-3s/asr903/ce-y1731 -perfmon.html Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 34 Chapter New Software Features in Cisco IOS XE Release 3.8(0)S Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 35: Chapter 5 New Hardware Features In Cisco Ios Xe Release 3.9(2)S
C H A P T E R New Features in Cisco IOS XE 3.9S Releases This chapter provides information about the new features introduced in the Cisco IOS XE Release 3.9S and includes the following sections: New Hardware Features in Cisco IOS XE Release 3.9(2)S, page 5-1 •...
Page 36: New Software Features In Cisco Ios Xe Release 3.9(1A)S
New Software Features in Cisco IOS XE Release 3.9(1a)S New Software Features in Cisco IOS XE Release 3.9(1a)S There are no new software features introduced in Cisco IOS XE Release 3.9(1)S. New Hardware Features in Cisco IOS XE Release 3.9(0)S Release 3.9(0) introduces support for the following hardware features:...
Page 37: New Software Features In Cisco Ios Xe Release 3.9(0)S
Link Layer Discovery Protocol—Link Layer Discovery Protocol (LLDP) is defined in the IEEE • 802.1ab standard and allows a non-Cisco device to interact with a Cisco device that uses Cisco Discovery Protocol (CDP) for topology discovery. For more information, see http://www.cisco.com/en/US/docs/ios-xml/ios/cether/configuration/xe-3s/asr903/ce-lldp-multiven...
Page 38 QoS Ingress Exp Bit Marking—This release introduces support for ingress QoS marking of MPLS Exp bits on TDM and ATM pseudowires. For more information, see http://www.cisco.com/en/US/docs/routers/asr903/software/guide/chassis/Release3.9.0S/ASR903- Chassis-SW-39.html. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 39 OC-3/OC-12 serial, MLPPP, and PoS interfaces. For more information, see http://www.cisco.com/en/US/docs/routers/asr903/software/guide/chassis/Release3.9.0S/ASR903- Chassis-SW-39.html. QoS Support for Ether Channels—This release introduces support for QoS policies on Etherchannel • interfaces. For more information, see http://www.cisco.com/en/US/docs/routers/asr903/software/guide/chassis/Release3.9.0S/ASR903- Chassis-SW-39.html. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 40 Chapter New Features in Cisco IOS XE 3.9S Releases New Software Features in Cisco IOS XE Release 3.9(0)S Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 41: Chapter 6 New Features In Cisco Ios Xe 3.10S Releases
• New Hardware Features in Cisco IOS XE Release 3.10.1S The IOS XE 3.10S Release for the Cisco ASR 903 Router introduces the following hardware features: DC PEM Module (A900-PWR550-D-E) The power supply provides 550 W output power for system 12 V power. The power supply is field replaceable, hot-swappable, and operates separately from the fan tray.
Page 42: Dust Filter (A903-Fan-F)
Installing the Cisco ASR 903 Series Aggregation Services Router. New Hardware Features in Cisco IOS XE Release 3.10S The IOS XE 3.10S Release for the Cisco ASR 903 Router introduces the following hardware features: Serial Interface Module IOS XE Release 3.10(0)S introduces support for the serial interface module, which is designed to provide a low-latency communication platform for legacy interfaces.
Page 43: Cwdm Sfp
For more information about obtaining and installing licenses, see Software Licensing Overview. CWDM SFP Cisco IOS XE Release 3.10S introduces support for the following SFPs on the 10 Gigabit Ethernet XFP Interface Module: ONS-XC-10G-EP • ONS-XC-10G-1470 •...
Page 44: Access Circuit Redundancy
BFD sessions or events. The following commands were introduced for this feature: monitor event-trace bfd, monitor event-trace bfd event, monitor event-trace bfd packet, and show monitor event-trace bfd. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 45: Bidirectional Forwarding Detection Deterministic Hardware Offload
The optical modules 4-Port OC3/STM-1 or 1-Port OC12/STM-4 delivers four active ports of OC-3 interface module (IM) or Synchronous Transport Module level 1 (STM-1) connectivity, or one active port of OC-12 IM or STM-4 connectivity, on the Cisco ASR 903 Router. Licensing is applicable to these ports on the interface modules.
Page 46: Multichassis Lacp
Single OC12/STM-4 STM-1 on OC-3 port port For more information see, Licensing the OC-3 and OC-12 Interface Modules on the Cisco ASR 903 Router. Multichassis LACP Cisco's Multichassis EtherChannel (MCEC) solution addresses the need for interchassis redundancy mechanisms, where a carrier wants to "dual home" a device to two upstream points of attachment (PoAs) for redundancy.
Page 47: Hardware Limitations
Hardware Limitations Serial Interface Module Limitations—The following limitations apply to the serial interface module: A maximum of 2 serial interface modules are supported on the Cisco ASR 903 Router. • The serial interface module hardware supports a 230.4 Kbps traffic rate in asynchronous mode. The •...
Page 48: Vpls Over Remote Lfa
Chapter New Software Features in Cisco IOS XE Release 3.10S VPLS over Remote LFA Starting with Cisco IOS XE Release 3.10, Virtual Private LAN Services (VPLS) is supported on the Cisco ASR 903 router. For more information see, Configuring Loop-Free Alternate Fast Reroute on the Cisco ASR 903 Router.
Page 49: New Hardware Features In Cisco Ios Xe Release 3.11S
C H A P T E R New Features in Cisco IOS XE 3.11S Releases This chapter provides information about the new features introduced in the Cisco IOS XE Release 3.10S. This chapter includes the following sections: New Hardware Features in Cisco IOS XE Release 3.11S, page 1-1 •...
Page 50: Aal5 Termination
The dissimilar per-hop behavior (PHB) match on exp is supported for Ingress and Egress on MPLS and VPLS interfaces. In earlier releases prior to Cisco IOS XE Release 3.11S, when qos-group or discard-class based on exp classification was configured, Egress based classification was not allowed on any other classification except Ingress set qos-group or discard-class.
Page 51: Ds3 Framing On Oc-3 And
Fast Reroute Support for Bridge Domain Interface Fast Reroute is supported on bridge domain interfaces on the Cisco ASR 903 router. For more information, see http://www.cisco.com/en/US/docs/routers/asr903/feature/guide/b_lfa_frr_903.html. IPv6 Multicast: Multicast Listener Discovery (MLD) This feature is used by IPv6 devices to discover multicast listeners (nodes that want to receive multicast packets destined for specific multicast addresses) on directly attached links.
Page 52: Remote Span
This feature generates syslog and consequently a Simple Network Management Protocol (SNMP) trap when an application reaches the preset threshold for its allotted TCAM size. For more information, see http://www.cisco.com/en/US/docs/routers/asr903/software/guide/b_TCAM_alarms_ASR903.html. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 53: Chapter 2 Limitations And Restrictions
Releases This chapter provides information about restrictions and caveats in Cisco IOS XE 3.6S releases. Because Cisco IOS XE 36S is based on Cisco IOS XE 3.5 inherited releases, some caveats that apply to Note Cisco IOS XE 3.5 releases also apply to Cisco IOS XE 36S. Release 3.5 is not described in this document;...
Page 54: Limitations And Restrictions In Cisco Ios Xe Release 3.6(1)S
QinQ is not supported on trunk EFP interfaces. • Ethernet IM Limitations The Cisco ASR 903 Router does not support the Facilities Data Link (FDL) on Ethernet interfaces. • • The Cisco ASR 903 Router does not support the mac-address command on Gigabit Ethernet interface modules.
Page 55 The Cisco ASR 903 Router supports a maximum of 2000 pseudowires in any combination. • QoS Limitations For a description of QoS features and limitations on the Cisco ASR 903 Router in release 3.6S, see http://www.cisco.com/en/US/docs/wireless/asr_900/software/guide/chassis/Release3.6.0S/ASR903-Ch assis-SW-36.html. Software Upgrade Limitation •...
Page 56: Limitations And Restrictions In Cisco Ios Xe Release 3.6S
EFP Limitation • QinQ is not supported on trunk EFP interfaces. QoS Limitations For a description of QoS features and limitations on the Cisco ASR 903 Router in release 3.6S, see http://www.cisco.com/en/US/docs/wireless/asr_900/software/guide/chassis/Release3.6.0S/ASR903-Ch assis-SW-36.html. MLPPP Limitations The following limitations apply when using MLPPP in IOS XE Release 3.6 on the Cisco ASR 903 Router: •...
Page 57 • interface modules. • On the Cisco ASR 903 Router, 10 Gigabit Ethernet interface modules are not supported in slots 4 and 5. • When you install a Gigabit Ethernet IM in the topmost interface module slot (slot 5), the last interface (interface GigabitEthernet0/5/0) is not operational;...
Page 58: Caveats In Cisco Ios Xe 3.6S Releases
• Workaround—Solutions, if available, to counteract the caveat. If you have an account on Cisco.com, you can also use the Bug Toolkit to find select caveats of any Note severity. To reach the Bug Toolkit, log in to Cisco.com and go to http://www.cisco.com/pcgi-bin/Support/Bugtool/launch_bugtool.pl.
Page 59 Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 60 Symptoms: The router displays interface module (IM) traceback errors. Conditions: Occurs with the GLC-SX-MMD or GLC-LH-SMD (Catskills) SFPs under the following scenarios: IM reload – – Router reload – Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 61: Resolved Caveats-Cisco Ios Xe Release 3.6(2)S
• Symptoms: A REP topology may reconverge during an RSP switchover. The consoles displays REP no-neighbor messages. Conditions: Occurs when you configure REP between two Cisco ASR 903 Routers and you perform an RSP switchover. Workaround: There is no workaround.
Page 62 Workaround: Configure all interfaces with Fast LSL. • CSCtz56517 Symptoms: The router drops MPLS packets with a checksum of 0xFFFF. Conditions: Occurs when the ASR 903 is acting as a label disposition edge label switch router (LSR). Workaround: There is no workaround. CSCtz61153 •...
Page 63: Open Caveats-Cisco Ios Xe Release 3.6(1)S
Chapter Restrictions and Caveats in Cisco IOS XE 3.6S Releases Caveats in Cisco IOS XE 3.6S Releases Open Caveats—Cisco IOS XE Release 3.6(1)S This section documents the unexpected behavior that might be seen with the Cisco ASR 903 Router in Cisco IOS XE Release 3.6(1)S. •...
Page 64 Workaround: Configure all interfaces with Fast LSL. • CSCtz56517 Symptoms: The router drops MPLS packets with a checksum of 0xFFFF. Conditions: Occurs when the ASR 903 is acting as a label disposition edge label switch router (LSR). Workaround: There is no workaround. CSCtz61153 •...
Page 65: Resolved Caveats-Cisco Ios Xe Release 3.6(1)S
Workaround: There is no workaround. CSCtx87145 • Symptoms: The ASR 903 router does not support LDP label packets when transmitted in PTP delay-request messages. Conditions: Occurs when you configure the ASR 903 router as a PTP (1588 version) boundary clock and the router sends an MPLS label packet within delay-request traffic.
Page 66 Conditions: Occurs when you configure a standby BITS clock source as an input clock source. Workaround: There is no workaround. CSCty48493 • Symptoms: The ASR 903 may reload with when acting as a hybrid clock. Conditions: Occurs under the following conditions: The PLL mode is TOP CLIENT –...
Page 67 Symptoms: On the Cisco ASR 903 router, the show environment command displays incorrect values, including P0 and P1 voltages and Amps values. Conditions: This symptom is observed with the Cisco ASR 903 router when you apply the show environment command.
Page 68 Conditions: Occurs under conditions in which the router or an interface module is not responding and the interface module is in an improper state. Workaround: There is no workaround; however the issue occurs very rarely. CSCtz45898 • Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 69: Open Caveats-Cisco Ios Xe Release 3.6(0)S
Conditions: Occurs during ISSU upgrade or downgrade. Workaround: There is no workaround. Open Caveats—Cisco IOS XE Release 3.6(0)S This section documents the unexpected behavior that might be seen with the Cisco ASR 903 Router in Cisco IOS XE Release 3.6(0)S. •...
Page 70 Symptoms: Cannot configure policing and marking together in the same class of the egress policy-map. Conditions: Set and police statements together in the same class of a policy is rejected at the CLI. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 71 Conditions: Occurs when you shut down a backup tunnel interface and a FRR-protected interface, bringing down MPLS TE tunnels. Workaround: There is no workaround; the error does not appear to impact traffic forwarding. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 72 Workaround: There is no workaround. • CSCty22165 Symptoms: The router displays the following console message: Transceiver initialization failed: Unable to display idprom Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 73 Symptoms: The router does not pass CFM traffic over an Ethernet CFM cross-connect. Conditions: Occurs under the following conditions: There is a CFM xconnect between two Cisco ASR 903 Router devices – You perform an OIR and set a default interface.
Page 74 Workaround: There is no workaround. CSCty42867 • Symptoms: The router crashes. Conditions: Occurs when you apply traffic soaking to the router with L2VPN services configured. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 75 Conditions: Occurs when you perform an OIR on a remote line card or when the standby RSP becomes the active RSP. Workaround: There is no workaround. CSCty50377 • Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 76 Conditions: Occurs under any of the following conditions: You perform an OIR on an interface module. – – You issue the no ppp multilink command on all MLP member links. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 77 Symptoms: The router drops traffic on ATM subinterfaces using layer 2 PVCs. Conditions: Occurs when you create 255 or more ATM PVCs. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 78 • Symptoms: A REP topology may reconverge during an RSP switchover. The consoles displays REP no-neighbor messages. Conditions: Occurs when you configure REP between two Cisco ASR 903 Routers and you perform an RSP switchover. Workaround: There is no workaround.
Page 79 Workaround: There is no workaround. CSCty96326 • Symptoms: The router crashes. Conditions: Occurs during bootup when the router is running BFD and CFM sessions that are offloaded to hardware. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 80: Resolved Caveats-Cisco Ios Xe Release 3.6(0)S
Conditions: Occurs after a bridge domain or split horizon group change. Workaround: There is no workaround. Resolved Caveats—Cisco IOS XE Release 3.6(0)S This section documents the issues that have been resolved in Cisco IOS XE Release 3.6(0)S. CSCtx47195 • Symptoms: BFD flaps when you perform a RSP switchover.
Page 81 Chapter Restrictions and Caveats in Cisco IOS XE 3.6S Releases Caveats in Cisco IOS XE 3.6S Releases Workaround: None. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 82 Chapter Restrictions and Caveats in Cisco IOS XE 3.6S Releases Caveats in Cisco IOS XE 3.6S Releases Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 83: Limitations And Restrictions
Releases This chapter provides information about restrictions and caveats in Cisco IOS XE 3.7S releases. Because Cisco IOS XE 37S is based on Cisco IOS XE 3.5 inherited releases, some caveats that apply to Note Cisco IOS XE 3.5 releases also apply to Cisco IOS XE 37S. Release 3.5 is not described in this document;...
Page 84: Limitations And Restrictions In Cisco Ios Xe Release 3.7(3)S
Limitations and Restrictions Limitations and Restrictions in Cisco IOS XE Release 3.7(3)S There are no changes in limitations and restrictions in Cisco IOS XE Release 3.7(3)S; the restrictions from IOS XE Release 3.7(2)S still apply. Limitations and Restrictions in Cisco IOS XE Release 3.7(2)S The following limitations and restrictions apply to Cisco IOS XE Release 3.7(2)S for the...
Page 85 The ASR 903 supports a maximum of 4 Equal Cost Multipath (ECMP) links. • Ethernet IM Limitations The Cisco ASR 903 Router does not support the Facilities Data Link (FDL) on Ethernet interfaces. • The Cisco ASR 903 Router does not support the mac-address command on Gigabit Ethernet •...
Page 86: Caveats In Cisco Ios Xe 3.7S Releases
The Cisco ASR 903 Router supports a maximum of 2000 pseudowires in any combination. • QoS Limitations • For a description of QoS features and limitations on the Cisco ASR 903 Router in release 3.7S, see http://www.cisco.com/en/US/docs/routers/asr903/software/guide/chassis/Release3.7.0S/ASR903- Chassis-SW-37.html. Software Upgrade Limitation We recommend you set the interface-module-delay value to 150 or greater in order to ensure •...
Page 87: Open Caveats-Cisco Ios Xe Release 3.7(4)S
Workaround—Solutions, if available, to counteract the caveat. • If you have an account on Cisco.com, you can also use the Bug Toolkit to find select caveats of any Note severity. To reach the Bug Toolkit, log in to Cisco.com and go to http://www.cisco.com/pcgi-bin/Support/Bugtool/launch_bugtool.pl.
Page 88 Symptom: Loss of 70 msec are observed when performing an IM OIR in a remote LFA ring. Conditions: This issue occurs when soft OIR is performed. Workaround: Do a hard OIR to get less than 50 msec loss. CSCue73478 • Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 89 Symptom: The transmitting frequency is incorrectly displayed in case of DWDM-XFP-C. Conditions: This issue occurs when show hw-module subslot 0 transceiver idprom command is executed. Workaround: There is no workaround. • CSCui50862 Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 90: Resolved Caveats-Cisco Ios Xe Release 3.7(4)S
Conditions: This issue occurs after a switvchover is performed from RSP0 to RSP1. Workaround: There is no workaround. Resolved Caveats—Cisco IOS XE Release 3.7(4)S This section documents the resolved caveats for the Cisco ASR 903 Router in Cisco IOS XE Release 3.7(4)S CSCtz43467 •...
Page 91 Chapter Caveats in Cisco IOS XE 3.7S Releases Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 92 CSCue75372 • Symptom: Time-hog traceback seen on router reload or IM reload. Conditions: This issue occurs on router bootup or IM bootup. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 93 Symptom: WRED counters for CS0 does not work in show policy-map interface command. Conditions: This issue is observed when show policy-map interface command is executed. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 94 Symptom: When you perform an OIR on the standby and active RSPs, CMAND crashes. Conditions: This issue is observed after performing multiple standby OIRs and bringing the standby machine up. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 95 Symptom: EFP stats does not work after applying the QoS policy on the EFP. Conditions: This issue occurs when service policy is applied on the EFP. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 96 Workaround: Remove and add the ACL. CSCug97639 • Symptom: IPv4 VRF ping fails when disabling IPv6 unicast-routing globally. Conditions: This issue occurs when IPv6 unicast-routing is disabled. Workaround: Enable IPv6 unicast-routing Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 97 Symptom: The TenGigabitEthernet port operates at one gigabit speeds in WAN-PHY mode on Cisco ASR 903 Routers. This leads to a huge amount of output drop. Conditions: This issue is observed if a QoS policy is configured on the TenGigabitEthernet interface.
Page 98: Open Caveats-Cisco Ios Xe Release 3.7(3)S
Chapter Caveats in Cisco IOS XE 3.7S Releases Open Caveats—Cisco IOS XE Release 3.7(3)S This section documents the unexpected behavior that might be seen with the Cisco ASR 903 Router in Cisco IOS XE Release 3.7(3)S. • CSCuf89844 Symptom: The router crashes when a bridge domain interface (BDI) interface running Bidirectional Forwarding Detection (BFD) is deleted.
Page 99 Conditions: This issue occurs after rapid SFP OIR. Workaround: Perform each OIR with a delay of 30-40 seconds between the OIR. Reload the IM to recover the port. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 100 CSCuf07508 • Symptom: The Gigabit Ethernet port on interface module does not come up after a reload. Conditions: This issue occurs when the Cisco ASR 903 router is reloaded multiple times. Workaround: Perform an OIR of the interface module. CSCuf79397 •...
Page 101: Resolved Caveats-Cisco Ios Xe Release 3.7(3)S
Workaround: There is no workaround. Resolved Caveats—Cisco IOS XE Release 3.7(3)S This section documents the issues that have been resolved in Cisco IOS XE Release 3.7(3)S. CSCty30951 •...
Page 102 Caveats in Cisco IOS XE 3.7S Releases There are 24 EFPs on each bridge domain. – You enter a shutdown command on the access interface. – Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 103 Symptom: Multicast statistics in the MFIB output can show NA/NA. This causes multicast traffic to drop every 3 minutes once the 3 minute timer expires. Conditions: Occurs after an stateful switchover (SSO). Workaround: Issue another SSO or reload the router. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 104 Workaround: There is no workaround. CSCuc85721 • Symptom: The router crashes. Conditions: Occurs under the following conditions: MR-APS is configured on serial interfaces on the OC-3 interface module – Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 105 Symptoms: The router displays console error messages when reloading. Conditions: Occurs when you reload the router. Workaround: There is no workaround; however, the messages have no impact on device. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 106 Caveats in Cisco IOS XE 3.7S Releases CSCud07642 • Symptom: The ASR 903 router is unable to pass traffic to the ASR 9000. Conditions: Occurs with a clear-channel ATM over MPLS configuration using AAL0 encapsulation. Workaround: Enable MPLS control-word on the ASR 9000.
Page 107 (BDI) using static routes. Workaround: The following workarounds exist: Use Interior Gateway Protocol (IGP) instead of static IP routes. – – Shut down one of the ECMP paths. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 108 Workaround: Issue a shutdown/no shutdown on multilink interface. CSCud55377 • Symptom: The router crashes. Conditions: Occurs when you configure offloaded CFM for xconnect sessions at a high scale. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 109 Conditions: Occurs when you attempt to configure control plane policing to restrict traffic punted by the CPU. Workaround: There is no workaround; the feature is not supported. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 110 Caveats in Cisco IOS XE 3.7S Releases Further Problem Description: The ASR 903 has an implicit policer to restrict traffic destined for the CPU. The router polices this traffic up to 1Mbps by default, and this value is adjustable. For more detail, see http://www.cisco.com/en/US/docs/ios-xml/ios/qos_plcshp/configuration/xe-3s/qos-plcshp-punt-po...
Page 111 • Symptom: The router crashes with an error message showing nmpls_label_populate_flow_data. Conditions: This issue occurs when the core interface is reset while the Cisco ASR 903 acts as a PE router running a configuration with Layer2 VPN and Layer3 VPN.
Page 112 Symptom: The control plane protocols such as ISIS, LDP do not come up and pings failure occurs on booting with scaled ACE or ACL. The ACL configurations fail. Conditions: This issue occurs on reload on the Cisco ASR 903 router. Workaround: There is no workaround.
Page 113 Workaround: There is no workaround. • CSCue25567 Symptom: Quack authentication failure messages are displayed on router console. Conditions: This issue occurs randomly. Workaround: Reload the router. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 114 Workaround: There is no workaround. CSCue30481 • Symptom: The Cisco ASR 903 router does not lock to the synchronous Ethernet clock source after reload. It remains in Ql-failed state. Conditions: This issue occurs after a reload of router with saved synchronous Ethernet clock configurations is performed.
Page 115 Symptom: Link goes down with Rev-D I Gigabit interface module. Conditions: This issue occurs on the 1 Gigabit Ethernet interface module port. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 116 Conditions: This issue occurs when a hard Online Insertion and Removal (OIR) is performed on the interface module. Workaround: Perform another hard OIR or a Stateful Switchover (SSO) followed by a soft OIR. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 117: Open Caveats-Cisco Ios Xe Release 3.7(2)S
Chapter Caveats in Cisco IOS XE 3.7S Releases Open Caveats—Cisco IOS XE Release 3.7(2)S This section documents the unexpected behavior that might be seen with the Cisco ASR 903 Router in Cisco IOS XE Release 3.7(2)S. • CSCts95896 Symptoms: The router stops passing traffic on EVC interfaces.
Page 118 Workaround: There is no workaround. • CSCub61344 Symptom: Link Control Protocol (LCP) negotiation fails, causing an MLP bundle to stop passing traffic. Conditions: Occurs under the following conditions: Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 119 Workaround: There is no workaround. CSCuc42085 • Symptom: The 1PPS output from the ASR 903 is out of range when compared to the 1PPS output of the PTP master clock. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router...
Page 120 Conditions: Occurs when two SFP interfaces are connected with one side set to 100 Mbps and the other side set to negotiation auto. Workaround: Set the speed to 10Mbps at both sides, then configure negotiation auto on one side of the connection. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 121 Workaround: There is no workaround. CSCud07642 • Symptom: The ASR 903 is unable to pass traffic to the ASR 9000. Conditions: Occurs with a clear-channel ATM over MPLS configuration using AAL0 encapsulation. Workaround: Enable MPLS control-word on the ASR 9000.
Page 122 Workaround: There is no workaround; however, the issue has no functional impact. The router displays the correct number of drops under the policer’s exceeded bps value. CSCud33329 • Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 123 Conditions: Occurs when: You create and apply IPv6 ACLs – You remove the IPv6 ACLs – You replace the IPv6 ACLs with IPv4 ACLs – Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 124 Two links from a copper Ethernet interface to another copper Ethernet interface – One link from a copper Ethernet interface to an SFP Ethernet interface – Workaround: Issue a shutdown/no shutdown on copper-to-copper connection interfaces. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 125: Resolved Caveats-Cisco Ios Xe Release 3.7(2)S
Conditions: Occurs when the router is configured with 10 or more IPv4 prefixes. Workaround: Configure 9 or fewer prefixes. Resolved Caveats—Cisco IOS XE Release 3.7(2)S This section documents the issues that have been resolved in Cisco IOS XE Release 3.7(2)S. CSCua62029 •...
Page 126 Conditions: Issue with only on NILE1 ports. NILE0 ports will work properly Workaround: There is no workaround. PSIRT Evaluation: The Cisco PSIRT has assigned this bug the following CVSS version 2 score. The Base and Temporal CVSS scores as of the time of evaluation are 5/4.1: https://intellishield.cisco.com/security/alertmanager/cvssCalculator.do?dispatch=1&version=2&ve...
Page 127: Open Caveats-Cisco Ios Xe Release 3.7(1)As
Alter the bandwidth remaining values to reduce the ratio between values. – Open Caveats—Cisco IOS XE Release 3.7(1)aS This section documents the unexpected behavior that might be seen with the Cisco ASR 903 Router in Cisco IOS XE Release 3.7(1)aS. CSCts95896 •...
Page 128 Workaround: There is no workaround; however, the issue does not have any functionality impact. • CSCua62029 Symptom: The router crashes. Conditions: Occurs when you configure a class-based QoS policy with the following characteristics: Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 129 Conditions: Occurs when you issue a soft reload on the OC-3 interface module when the router is configured with MLPPP at a high scale. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 130 Workaround: There is no workaround. CSCuc42085 • Symptom: The 1PPS output from the ASR 903 is out of range when compared to the 1PPS output of the PTP master clock. Conditions: Occurs when the router is configured as a hybrid clock (ordinary/boundary) and there are intermediate hops between the router and the PTP master clock.
Page 131: Resolved Caveats-Cisco Ios Xe Release 3.7(1)As
Conditions: Occurs when you perform an SSO with a TDM interface module. Workaround: There is no workaround. Resolved Caveats—Cisco IOS XE Release 3.7(1)aS This section documents the issues that have been resolved in Cisco IOS XE Release 3.7(1)aS. CSCty63969 •...
Page 132 The router attempts to boot using a non-bootable image in bootflash memory. Workaround: There is no workaround. CSCub71578 • Symptoms: The router displays traceback and failure messages on the standby RSP. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 133: Open Caveats-Cisco Ios Xe Release 3.7(0)S
Workaround: Wait for the PTP slave clock to lock to the master clock before configuring PTP as a network clock input source. Open Caveats—Cisco IOS XE Release 3.7(0)S This section documents the unexpected behavior that might be seen with the Cisco ASR 903 Router in Cisco IOS XE Release 3.7.0S. CSCts95896 •...
Page 134 REP topology change, REP preemption, or when you perform a shutdown/no shutdown on an interface. Workaround: Reduce the MAC scale. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 135 Remove an EVC member link from a port-channel interface – Configure a trunk EFP -Set the interface to default – Add the EVC member link back into the port-channel interface – Workaround: Reload the router. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 136 Workaround: Configure the EFPs and bridge-domains and initiate traffic flow before attaching QoS policies. CSCua03439 • Symptoms: The router displays error messages similar to the following: %EVENTLIB-3-CPUHOG: SIP0: nile_mgr: Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 137 255 BDIs which send IGMP v2 Joins to a single multicast group. – – 255 EVCs configured as a routed port with the port a member link of a port-channel. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 138 Dot1q encapsulation is configured on an EFP. – Workaround: Configure the EFP encapsulation as untagged. CSCua55122 • Symptoms: The OC-3 interface module crashes when you create a high number of ATM IMA interfaces. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 139 Conditions: Occurs when you configure a large number of HDLC interfaces: 84 per port or 336 per interface module. Workaround: Remove and reconfigure the interface. CSCua73104 • Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 140: Resolved Caveats-Cisco Ios Xe Release 3.7(0)S
• Symptoms: A REP topology may reconverge during an RSP switchover. The consoles displays REP no-neighbor messages. Conditions: Occurs when you configure REP between two Cisco ASR 903 Routers and you perform an RSP switchover. Workaround: There is no workaround.
Page 141 Workaround: Configure all interfaces with Fast LSL. CSCtz56517 • Symptoms: The router drops MPLS packets with a checksum of 0xFFFF. Conditions: Occurs when the ASR 903 is acting as a label disposition edge label switch router (LSR). Workaround: There is no workaround. CSCtz61153 •...
Page 142 Chapter Caveats in Cisco IOS XE 3.7S Releases Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 143: Chapter 4 Restrictions And Caveats In Cisco Ios Xe 3.8 Releases
Caveats in Cisco IOS XE 3.8S Releases, page 6 Limitations and Restrictions The following sections describe the Cisco ASR 903 Router limitations in IO S XE 3.8 releases: Limitations and Restrictions in Cisco IOS XE Release 3.8(2)S, page 1 •...
Page 144: Limitations And Restrictions In Cisco Ios Xe Release 3.8(0)S
High Availability (HA) is not supported with IMA. • Bidirectional Forwarding Detection Limitations The ASR 903 does not support BFD timers with a value of less than 200 ms x 3 (using a multiplier • of 3) for software-based BFD sessions.
Page 145 Fragmentation is not supported with Multicast traffic. • IPv6 Limitations The following limitation applies when using IPv6 on the Cisco ASR 903 Router: IPv6 Neighbor Discovery (ND) cache timer expiry is 4 hours. To prevent the neighbour adjacency • from being deleted after the timer expires: –...
Page 146 QoS policies on two levels on these interfaces. Pseudowire/AToM Limitation The Cisco ASR 903 Router supports ATM over MPLS N-to-one cell mode for a single ATM Virtual • Channel Connections (VCCs) or Permanent Virtual Circuits (PVCs) to a pseudowire, but does not support mapping to multiple VCCs or PVCs.
Page 147 Chapter Limitations and Restrictions QoS Limitations For a description of QoS features and limitations on the Cisco ASR 903 Router in Release 3.8S, see http://www.cisco.com/en/US/docs/routers/asr903/software/guide/chassis/Release3.8.0S/ASR903-Chas sis-SW-38.html Software Upgrade Limitation • We recommend you set the interface-module-delay value to 150 or greater in order to ensure sufficient time for IM software upgrades.
Page 148: Caveats In Cisco Ios Xe 3.8S Releases
Workaround—Solutions, if available, to counteract the caveat. • If you have an account on Cisco.com, you can also use the Bug Toolkit to find select caveats of any Note severity. To reach the Bug Toolkit, log in to Cisco.com and go to http://www.cisco.com/pcgi-bin/Support/Bugtool/launch_bugtool.pl.
Page 149: Open Caveats-Cisco Ios Xe Release 3.8(2)S
Chapter Caveats in Cisco IOS XE 3.8S Releases Open Caveats—Cisco IOS XE Release 3.8(2)S This section documents the unexpected behavior that might be seen with the Cisco ASR 903 Router in Cisco IOS XE Release 3.8(2)S. • CSCua77688 Symptom: The router experiences remote CFM MEP flapping.
Page 150 Conditions: This issue occurs under unknown conditions. Workaround: Reload the router. CSCud64436 • Symptom: The router does not send the full line rate on POS interfaces. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 151 • Symptom: The router crashes with an error message showing nmpls_label_populate_flow_data. Conditions: This issue occurs when you reset a core interface while the ASR 903 is acting as a PE router and running a configuration with L2VPN and L3VPN. Workaround: There is no workaround.
Page 152 Conditions: This issue occurs after removing the service instance with the MAC Addresses learnt on the BD. Workaround: Reload the Router. • CSCuf15768 Symptom: Multicast traffic is not bridged with REP. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 153 Symptom: Traffic stops flowing through QinQ BDI interface after ARP times out and ARP is removed by shutting the BDI. Conditions: This issue occurs when static routing is configured, and no routing protocol is configured on the interface. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 154: Resolved Caveats-Cisco Ios Xe Release 3.8(2)S
Conditions: This issue occurs when service policy is applied on the EFP. Workaround: There is no workaround. Resolved Caveats—Cisco IOS XE Release 3.8(2)S This section documents the issues that have been resolved in Cisco IOS XE Release 3.8(2)S. CSCub80685 •...
Page 155 Symptom: The Cisco ASR 903 router does not display an alarm when nV satellite authentication fails. Conditions: This issue occurs when the ASR 9000 and ASR 903 are in an nV satellite configuration and the routers are configured with a different serial-number value.
Page 156 MEP to stop working. Workaround: There is no workaround. • CSCud48298 Symptom: The Cisco ASR 903 dataplane fails on bootup of the CEM PW after a switchover is performed. Conditions: This issue occurs after a switchover is performed. Workaround: There is no workaround.
Page 157 Conditions: This issue occurs when Ethernet Flow Point (EFP)s with split-horizon are configured. Workaround: Perform a shutdown followed by no shutdown. Configure EFP first before moving into split-horizon group. CSCue16828 • Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 158 Workaround: There is no workaround. CSCue25567 • Symptom: Quack authentication failure message seen on console. Conditions: This issue is seen randomly. Workaround: Reload the router. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 159 Symptom: IMA configurations cannot be parsed correctly after a router reload. Conditions: This issue occurs after the A903-IM40S is inserted in bay 4 or bay 5 of the Cisco ASR903 router and when the IMA and ATM interfaces are adjacent.
Page 160 Workaround: There is no workaround. This issue is a cosmetic issue. • CSCue59544 Symptom: The A900-IMA16D generates a storm on closing the backup tunnel. Condition: This issue occur after closing the tunnel. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 161 Conditions: This issue occurs when a hard Online Insertion and Removal (OIR) is performed on the interface module. Workaround: Perform another hard OIR or a Stateful Switchover (SSO) followed by a soft OIR. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 162: Open Caveats-Cisco Ios Xe Release 3.8(1)S
RSP. Workaround: There is no workaround. Open Caveats—Cisco IOS XE Release 3.8(1)S This section documents the unexpected behavior that might be seen with the Cisco ASR 903 Router in Cisco IOS XE Release 3.8(1)S. •...
Page 163 Workaround: Do not issue an interface module reset (OIR) while the standby RSP is booting. CSCud29479 • Symptom: The router stops applying QoS configurations. Conditions: Occurs under the following conditions: An Ethernet interface is configured with a single service instance – Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 164 CSCud89451 Symptom: The router crashes with an error message showing nmpls_label_populate_flow_data. Conditions: Occurs when you reset a core interface while the ASR 903 is acting as a PE router and running a configuration with L2VPN and L3VPN. Workaround: There is no workaround.
Page 165: Resolved Caveats-Cisco Ios Xe Release 3.8(1)S
Chapter Caveats in Cisco IOS XE 3.8S Releases Resolved Caveats—Cisco IOS XE Release 3.8(1)S This section documents the issues that have been resolved in Cisco IOS XE Release 3.8(1)S. CSCty30951 • Symptom: The router displays the following console error message:...
Page 166 • CSCub73405 Symptom: Cisco ASR903 router can experience latency for process-switched traffic and display high CPU utilization at nile_mgr. Conditions: Occurs on an ASR 903 with redundant RSPs after you reload the standby RSP. Workaround: Reboot the router. CSCub78861 •...
Page 167 – Workaround: There is no workaround. CSCuc90008 • Symptom: The OC-3 controller stops passing traffic. Conditions: Occurs after you reset the facing interface on the CE device. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 168 You use the BDI to send IGMP v2 static join messages to a single multicast group – You disable IGMP snooping globally. – You configure 24 EFPs and map them to a single bridge-domain. – You initiate multicast traffic. – Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 169 Workaround: There is no workaround. CSCud07642 • Symptom: The ASR 903 is unable to pass traffic to the ASR 9000. Conditions: Occurs with a clear-channel ATM over MPLS configuration using AAL0 encapsulation. Workaround: Enable MPLS control-word on the ASR 9000.
Page 170 Conditions: Occurs when you perform the following actions: Configure EFPs as members of a port channel containing a single interface. – Remove the configuration for the EFPs – Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 171 Workaround: Reload the router or issue a stateful switchover (SSO). • CSCud26154 Symptom: The router displays incorrect ENV readings. Conditions: Occurs when you switch off one power supply unit in a dual power supply configuration. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 172 Workaround: Enable and disable the SPAN session CSCud28685 • Symptom: Ping fails between the CE1 and CE2 devices when the ASR 903 is acting as the PE device. Conditions: Occurs when the SONET controller or ATM interface experiences an interface flap.
Page 173 Symptom: The router is unable to establish MPLS neighborship or ping the destination loopback interface. Conditions: Occurs when you configure two Equal Cost Multipath (ECMP) paths on a bridge domain interface (BDI) using static routes. Workaround: The following workarounds exist: Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 174 Symptom: The router displays a traceback error when there one power supply unit slot is empty. Conditions: Occurs during boot. Workaround: There is no workaround. CSCud44768 • Symptom: Multilink bundles and member links flap when passing traffic. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 175 Workaround: Add a dummy class-default level at the top of the policy and apply the shaper as a child policy of this class. CSCud58793 • Symptom: The FPD version is blank Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 176 Conditions: Occurs when the configuration contains static routes to the destination. Workaround: There is no workaround. CSCud76209 • Symptom: The OC-3 interface module goes into an out of service state. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 177 Conditions: The issue occurs very intermittently on a HA system with a 6 second dead-interval value when you issue the redundancy force-switchover command; Workaround: Increase the dead-interval value. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 178: Open Caveats-Cisco Ios Xe Release 3.8(0)S
Chapter Caveats in Cisco IOS XE 3.8S Releases Open Caveats—Cisco IOS XE Release 3.8(0)S This section documents the unexpected behavior that might be seen with the Cisco ASR 903 Router in Cisco IOS XE Release 3.8(0)S. • CSCts95896 Symptoms: The router stops passing traffic on EVC interfaces.
Page 179 Conditions: Occurs on the OC-3 interface module when the router sends errored frames. Workaround: There is no workaround. CSCuc02617 • Symptom: The router stops passing MPLS LDP traffic. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 180 Symptom: OSPF/BFD interfaces flap when you apply a test access list. Conditions: Occurs when you configure an IP ACL on an EVC interface. Workaround: Remove the configuration. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 181 Symptom: When you shut down a link within an Multiservice Transport Platform (MSTP) instance, interfaces in other MSTP instances are blocked. Conditions: Occurs when the interface in the MSTP instance is the root port. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 182 3 Conditions: Occurs when the router is passing traffic over the OC-3 interface module. Workaround: There is no workaround. CSCud04529 • Symptom: The router shows traffic loss. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 183 • Symptom: The ASR 903 does not display an alarm when nV satellite authentication fails. Conditions: Occurs when the ASR 9000 and ASR 903 are in an nV satellite configuration and the routers are configured with a different serial-number value.
Page 184 Workaround: Enable and disable the SPAN session CSCud28685 • Symptom: Ping fails between the CE1 and CE2 devices when the ASR 903 is acting as the PE device. Conditions: Occurs when the SONET controller or ATM interface experiences an interface flap.
Page 185: Resolved Caveats-Cisco Ios Xe Release 3.8(0)S
• Symptoms: Traffic loss is seen in pure BGP NSR peering environment. Conditions: The symptom is seen on a Cisco router that is running Cisco IOS Release 15.2(2)S, and the BGP peerings to CEs and RR are all NSR-enabled. Workaround: Enable the bgp graceful-restart command for RR peering.
Page 186 You dynamically add a member link to a port-channel. – You issue a shutdown/no shutdown on a member link of a port-channel. Workaround: Wait for PTP to synchronize before configuring DMM scheduling. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 187: Chapter 5 Restrictions And Caveats In Cisco Ios Xe 3.9 Releases
Caveats in Cisco IOS XE 3.9S Releases, page 5 Limitations and Restrictions The following limitations apply to the Cisco ASR 903 Router in IOS XE Release 3.9(0)S and later: ATM IMA Limitation You can create a maximum of 16 IMA groups on each T1/E1 interface module.
Page 188 PTP over Ethernet is not supported in multicast mode; only unicast mode is supported G.8265.1 telecom profile is not supported for PTP over Ethernet. • The Cisco ASR 903 Router does not support a mix of IPv4 and Ethernet clock-ports when acting as • a transparent clock or boundary clock.
Page 189 Bandwidth-Based Call Admission Control (CAC) feature is not supported. • IPv6 Limitations The following limitation applies when using IPv6 on the Cisco ASR 903 Router: IPv6 Neighbor Discovery (ND) cache timer expiry is 4 hours. To prevent the neighbour adjacency •...
Page 190 MIB support including PW-TDM-MIB, PW-ATM-MIB, and PW-CESOPSN-MIB • N:1 PVC Mapping with non-unique VPI (N>1) QoS Limitations For a description of QoS features and limitations on the Cisco ASR 903 Router in Release 3.9S, see http://www.cisco.com/en/US/docs/routers/asr903/software/guide/chassis/Release3.9.0S/ASR903-Chas sis-SW-39.html Software Upgrade Limitation We recommend you set the interface-module-delay value to 150 or greater in order to ensure sufficient time for IM software upgrades.
Page 191: Caveats In Cisco Ios Xe 3.9S Releases
• Note If you have an account on Cisco.com, you can also use the Bug Toolkit to find select caveats of any severity. To reach the Bug Toolkit, log in to Cisco.com and go to http://www.cisco.com/pcgi-bin/Support/Bugtool/launch_bugtool.pl. (If the defect that you have...
Page 192: Resolved Caveats-Cisco Ios Xe Release 3.9(2)S
BDI with port channel. • CSCue67267 Symptom: High traffic drop on Stateful Switchover (SSO). Double dip on SSO. Conditions: This issue occurs occasionally (one in five iterations) on Cisco ASR 903 Router with MVPN scale setup. Workaround: There is no workaround. •...
Page 193 – Complete traffic is dropped – PoS interface of the remote Cisco ASR 903 Router remains in up or down state. – Conditions: This issue occurs on activating SSO after an IM OIR when configuring PoS interface in OC-12 mode.
Page 194 Conditions: This issue occurs when start-up configuration includes port channels along with TEFP/EFP as part of the bridge-domain. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 195 CSCug18185 • Symptom: When the interfaces comes up after bootup, traffic received on the Cisco ASR 903 Router serial interfaces are not switched to the BDI connected to Ixia. Conditions: This issue occurs when ARP resolution of the Ixia connected interface IP address fails.
Page 196 Conditions: This issue occurs when using PPP encapsulation. Workaround: There is no workaround. CSCug86963 • Symptom: Bidirectional Forwarding Detection (BFD) is unable to resolve neighbor Address Resolution Protocol (ARP). Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 197 Workaround: Enable IPv6 unicast-routing CSCug99750 • Symptom: The Cisco ASR 903 Router crashes when it accesses unpopulated data structures. Conditions: This issue is observed when you perform an IM OIR and use the shutdown and no shutdown commands. Workaround: There is no workaround.
Page 198 Workaround: There is no workaround. • CSCuh18503 Symptom: BFD IPv6 sessions may not come up between Cisco ASR 9000 and Cisco ASR 903 Routers. Conditions: This issue is observed when the packets sent from Cisco ASR 903 Router have invalid UDP checksums.
Page 199: Open Caveats-Cisco Ios Xe Release 3.9(1A)S
Conditions: This issue occurs during SSO switchover on the10 Gigabit Ethernet interface of a HA system. Workaround: There is no workaround. Open Caveats—Cisco IOS XE Release 3.9(1a)S This section documents the unexpected behavior that might be seen with the Cisco ASR 903 Router in Cisco IOS XE Release 3.9(1a)S. CSCuc33798 •...
Page 200 Caveats in Cisco IOS XE 3.9S Releases CSCuc42085 • Symptoms: The 1PPS output from the ASR 903 is out of range when compared to the 1PPS output of the PTP master clock. Conditions: This issue occurs when the router is configured as a hybrid clock (ordinary/boundary) and there are intermediate hops between the router and the PTP master clock.
Page 201 Conditions: This issue occurs when you take the following actions: – Configure REP with VLAN load balancing Configure VPLS VFI on the VLANs – Issue an stateful switchover (SSO) – Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 202 Symptom: The show ptp port running detail command shows the wrong stream id. Conditions: This issue occurs under normal working conditions. Workaround: Use the show plat soft ptp command get the correct stream id. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 203: Resolved Caveats-Cisco Ios Xe Release 3.9(1A)S
Caveats in Cisco IOS XE 3.9S Releases Resolved Caveats—Cisco IOS XE Release 3.9(1a)S This section documents the issues that have been resolved in Cisco IOS XE Release 3.9(1a)S. CSCtw76473 • Symptom: The router displays packet drops on some VPLS pseudowire virtual circuits (VCs) on the disposition side.
Page 204 (TCAM) space is allocated for ACLs in the IP template. Conditions: This issue occurs in normal conditions when the scale reaches 1980. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 205 Conditions: This issue occurs on a service instance with dot1q encapsulation and no rewrite is configured on the interface.The policy map attached in the ingress has marking in it. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 206 Symptom: Process crash on standby does not generate a core file. Conditions: This issue occurs on normal conditions. Workaround: There is no workaround. CSCuf02518 • Symptom: IPv4 Traffic gets affected on IPv6 ACL applied interface. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 207 Symptom: WRED counters for CS0 do not display in show policy-map interface command. Conditions: This issue is observed when show policy-map interface command is executed. Workaround: There is no workaround. • CSCuf61365 Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 208 Conditions: This issue occurs when a service-policy is configured before configuring xconnect on the router that has consumed close to max labels. Workaround: First configure xconnect and then configure service-policy Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 209 The OSPF session goes down after application of Egress policy. Workaround: Apply policy directly on EC member links. CSCug40852 • Symptom: Link failure in L3VPN core takes a long time to converge with BGP PIC configuration. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 210 Symptom: The ISIS router fails to come up after issuing a shutdown followed by a no shutdown command. Conditions: This issue occurs when RLFA and BFD configutations exist on the router. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 211 Active BGP PE and vice versa In this scenario, even after BGP convergence, data packets would traverse through previous primary BGP PE(now repair path PE). Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 212: Open Caveats-Cisco Ios Xe Release 3.9(0)S
Caveats in Cisco IOS XE 3.9S Releases Open Caveats—Cisco IOS XE Release 3.9(0)S This section documents the unexpected behavior that might be seen with the Cisco ASR 903 Router in Cisco IOS XE Release 3.9(0)S. • CSCud06772 Symptom: IPv6 neighbor discovery does not function properly after stateful switchover (SSO); the router loses traffic and eventually recovers.
Page 213 Workaround: There is no workaround. CSCue72481 • Symptoms: IP address and Meps accepting in the same interface Conditions: configured the IP address and Port mep accepting in the same interface. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 214 Conditions: Bundle having maximum links in it and perform a SSO. find steps to repro Workaround: none CSCue96512 • Symptoms: RP crashes if punt/inject keepalives are missed. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 215 Symptoms: IOMd Crash On Performing SSO Switchover With Interfaces Shut Conditions: Have ATM/IMA interfaces shut. Perform switchover and notice IOMd crash on new Active Workaround: No workaround CSCuf64404 • Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 216: Resolved Caveats-Cisco Ios Xe Release 3.9(0)S
Conditions: When the CU SFP is configured with 100Mbps speed. Workaround: No workaround. Resolved Caveats—Cisco IOS XE Release 3.9(0)S This section documents the issues that have been resolved in Cisco IOS XE Release 3.9(0)S. CSCts14725 • Symptoms: mep does not come up sometimes, error messages always.
Page 217 IPv6 packets that would otherwise be dropped, will instead bypass an ACL and get through. Workaround: None PSIRT Evaluation: The Cisco PSIRT has assigned this bug the following CVSS version 2 score. The Base and Temporal CVSS scores as of the time of evaluation are 5/4.8: https://intellishield.cisco.com/security/alertmanager/cvssCalculator.do?dispatch=1&version=2&ve...
Page 218 STP. Workaround: None. CSCua49623 • Symptoms: CEM interface becomes inaccessible Conditions: When same channel-group number and cem-group number is used for overlapping timeslots this issue is hit Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 219 Symptoms: When Bridge-domain of the efp is changed and the new bridge-domain is not accepted, the old bridge-domain gets rejected. Conditions: EVC -BD configuration change. Workaround: None CSCub33576 • Symptoms: All IMA interfaces does not come up until OIR of IM. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 220 Workaround: There is no workaround. • CSCub49985 Symptoms: MPLS pseudowire ping from the peer to the Cisco ASR 903 fails if the peer is using TTL-based ping. Conditions: This symptom occurs when the peer is using TTL-based ping. Workaround: There is no workaround.
Page 221 MPLS Traffic Engineering (TE)--Fast Reroute (FRR) Link and Node Protection – CSCub63954 • Symptoms: Speed configurations are rejected. Error message appears on active Conditions: HA - Box. Speed configurations are rejected Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 222 • Symptoms: When alarms are seen it displays as ASR1000 instead of ASR903, no functionality impact, only display issue. Conditions: On seeing alarms. Workaround: None. CSCub88822 • Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 223 Symptoms: The console displays a message indicating that offloading is not supported for BFD echo mode. Conditions: Occurs when you configure a BFD session in echo mode. Workaround: There is no workaround; however, the issue has no functionality impact. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 224 Conditions: 1. Post router reload 2. When peer interface cable is pulled out & put back Workaround: Interface reset (shut/no shut) CSCuc42002 • Symptoms: The router crashes when configuring the ATM interface, displaying a segmentation fault error. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 225 Conditions: ASR903 is not connected to any external frequency and Phase source and is using freerun internal clock to provide synchronization. Workaround: ASR903 PTP master should be locked to external frequency and phase source. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 226 Symptom: Layer 2 traffic loop seen in REP topology for a transient time, when the Cisco ASR 903 which is a part of the REP ring is reloaded. Conditions: This symptom is observed when the Cisco ASR 903 is part of an REP ring, and the box is reloaded with saved REP configurations.
Page 227 Symptom: Adding EFP to Bridge-Domain fails and errors are seen when reloading with Cisco IOS XE Release 3.7.1a. Conditions: This symptom is observed when reloading the Cisco ASR 903 with Cisco IOS XE Release 3.7.1a, when EFP and PW are in the same Bridge-Domain.
Page 228 Symptom: The router displays the following console error message: Error - packet with unsupported linktype 3 Conditions: Occurs when the router is passing traffic over the OC-3 interface module. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 229 Conditions: Currently it is being displayed as "cisco, asr903" against Vendor in host by executing this CLI "show nv satellite protocol discovery interface Bundle-Ether1000". This must be displayed as cisco, ASR-903. This is mainly used by ASR9K ACT tool for rendering 903 graphic on Act tool. Workaround: No workaround.
Page 230 Conditions: This symptom occurs when scale is exceeded with the ECMP path. Workaround: Do not allow the user to exceed the supported IPv4 route scale with ECMP. CSCud34600 • Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 231 Conditions: Occurs when you configure two Equal Cost Multipath (ECMP) paths on a bridge domain interface (BDI) using static routes. Workaround: The following workarounds exist: Use Interior Gateway Protocol (IGP) instead of static IP routes. – Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 232 Conditions: Occurs following a reload while the router is passing traffic close to the line rate. The issue occurs less frequently with lower traffic rates. Workaround: Issue a shutdown/no shutdown on multilink interface. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 233 Verify Ping again & traffic 5) Unconfigure t1 interfaces .6) Reload the standby 7) Configure t1 interfaces 8) T1 interfaces are not coming up Workaround: IM OIR on box CSCud64129 • Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 234 Symptom: The ten Gigabit Ethernet interface drops traffic for 7 seconds following a stateful switchover (SSO). Conditions: Occurs when the configuration contains static routes to the destination. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 235 • Symptom: The router crashes with an error message showing nmpls_label_populate_flow_data. Conditions: Occurs when you reset a core interface while the ASR 903 is acting as a PE router and running a configuration with L2VPN and L3VPN. Workaround: There is no workaround.
Page 236 Symptoms: Ctrl protocols stay down, pings fail on booting with scaled ACE/ACL, (ACL configurations are failing) Conditions: it occurs only on reload time Workaround: There is no workaround. CSCue00049 • Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 237 PIC Core + Edge configuration. If these are more than one equal cost physical paths to reach BGP peers, then adjust the configuration by increasing the distance for all paths except one. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 238 Symptoms: -Core (S, G) entries will software switch with-out any hardware forwarding Conditions: -IIF is PIM enabled BDI interface. -Scale EVCs configured under single port -Scale BDIs as IIFs -Trigger: Flap main interface having EFPs Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 239 When new stand-by reaches standby-hot state, continuous iomd crash messages are seen at regular intervals. Conditions: Seen when ISSU is performed from older label images to XE39 image. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 240 Workaround: none • CSCue42341 Symptoms: Backup path will be used to carry traffic instead of Primary path after reopt Conditions: R-LFA + BFD needs to be configured together Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 241 Workaround: None, in case PFC and ACFC is configured. • CSCue57670 Symptoms: After SSO without any network-clock config new Active RSP Sync LED reflects Holdover state. Conditions: Workaround: Reload This is a cosmetic issue. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 242 Workaround: For IPv6 SSO support, ensure the following: IPv6 neighbor are configured statically. – – For dynamic route or static route, you must run a hardware BFD between IPV6 neighbors. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 243: Chapter 6 Restrictions And Caveats In Cisco Ios Xe 3.10 Releases
Caveats in Cisco IOS XE 3.10S Releases, page 6-2 Limitations and Restrictions The following limitations apply to the Cisco ASR 903 Router in IOS XE Release 3.10(0)S: IPv6 Limitations The following limitation applies when using IPv6 on the Cisco ASR 903 Router: IPv6 Neighbor Discovery (ND) cache timer expiry is 4 hours.
Page 244: Caveats In Cisco Ios Xe 3.10S Releases
• Workaround—Solutions, if available, to counteract the caveat. If you have an account on Cisco.com, you can also use the Bug Toolkit to find select caveats of any Note severity. To reach the Bug Toolkit, log in to Cisco.com and go to http://www.cisco.com/pcgi-bin/Support/Bugtool/launch_bugtool.pl.
Page 245 Chapter Caveats in Cisco IOS XE 3.10S Releases Open Caveats—Cisco IOS XE Release 3.10.1S This section documents the unexpected behavior that might be seen with the Cisco ASR 903 router in Cisco IOS XE Release 3.10.1S. • CSCue42139 Symptom: The ptp state is stuck in acquiring state all the time Conditions: This issue occurs when the active RSP is removed;...
Page 246 Workaround: Reattach the policy-map CSCuj38988 • Symptom: Queue-limit does not go to queue-limit failed state when we the gigabit ethernet interface is shutdown. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 247: Resolved Caveats-Cisco Ios Xe Release 3.10.1S
Conditions: This issue occurs when EQoS application is enabled. Workaround: There is no workaround. Resolved Caveats—Cisco IOS XE Release 3.10.1S This section documents the issues that have been resolved in Cisco IOS XE Release 3.10.1S. CSCue60699 • Symptom: Router auto negotiates full duplex with 1000M half/full duplex configuration.
Page 248 BDI interface. Workaround: Use show platform hardware pp active interface statistics bdi command to view the statistics. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 249 Conditions: This issue occurs on the router with 250 or more CFM MEP sessions and more than 1250 Layer2 virtual circuit sessions. Workaround: There is no workaround. CSCui34041 • Symptom: Traffic does not flow to one of the prefix on MPLS template. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 250 CSCuj42080 Symptom: The FGPA gets stuck while pumping high volume of CFM packets. Conditions: This issue occurs while pumping high volume of CFM packets on the router. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 251 CSCuj50260 • Symptom: CFM ping fail to MPIDS on the router. Conditions: This issue occurs when MEPS are configured over port channel. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 252: Open Caveats-Cisco Ios Xe Release 3.10S
Chapter Caveats in Cisco IOS XE 3.10S Releases Open Caveats—Cisco IOS XE Release 3.10S This section documents the unexpected behavior that might be seen with the Cisco ASR 903 router in Cisco IOS XE Release 3.10S. • CSCue36365 Symptom: During initial bootup of the serial interface module, the first character of the first packet received might be missing.
Page 253 Workaround: Reconfigure the Ql values. CSCuh33291 • Symptom: The Cisco ASR 903 router generates linkDown traps when an interface changes from administratively down state to down state. Conditions: This issue is observed when an interface changes from administratively down state to down state.
Page 254 Workaround: There is no workaround. CSCui22637 • Symptom: The Cisco ASR 903 router crashes. Conditions: This issue is observed when you unconfigure 1000 Ethernet service instances. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 255: Resolved Caveats-Cisco Ios Xe Release 3.10S
Symptom: IOMD crashes continuously on OC-3 IM. The interfaces on OC-3 IM are not configurable and the following error message is displayed: stand-by does not support this command Conditions: This issue is observed on a Cisco ASR 903 router high availability setup with OC-3 IM. Workaround: Reload the standby RSP. CSCuc60148 •...
Page 256 Symptom: Timestamping does not work in CFM over cross-connected MEP with port channel. Conditions: This issue is observed when you configure CFM over cross-connected MEP with port channel from a Cisco ASR 903 router to a Cisco ME 3600 switch. Workaround: There is no workaround.
Page 257 Symptom: After performing an SSO, multicast traffic is dropped for a few groups. Conditions: This issue is observed in a scaled configuration with IGMP snooping enabled in a bridge-domain. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 258 Conditions: This issue is observed when you disable autonegotiation and configure the interface speed as 100 or 1000. Workaround: There is no workaround. There is no impact on functionality. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 259 Conditions: This symptom is observed while performing an SSO or when using the redundancy force-switchover command and on a HA system with 6 seconds as OSPF dead interval. Workaround: Increase the dead interval value. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 260 Symptoms: The ATM interfaces are deleted while performing an SSO. Conditions: This issue is observed when the ATM interfaces are deleted on the standby machine after performing an IM OIR. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 261 Symptom: IMA configuration is not parsed correctly after a router reload when the A903-IM40S module is inserted in Bay4 or Bay5 of the Cisco ASR 903 router. Conditions: This issue is observed when the IMA and ATM interfaces are adjacent. It happens only if the IM is inserted on Bay 4 or above.
Page 262 Symptom: The power supply status reports critical after you remove and insert the power supply. Conditions: This issue is observed after performing multiple OIRs. Workaround: There is no workaround. CSCuf01120 • Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 263 Symptoms: When you reload the router, the device may not be able to load the startup configuration from NVRAM. Conditions: This issue is sometimes observed when you reload the router. Workaround: Reload the router again. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 264 Conditions: This issue is observed when you assign a static MAC address on a neighbor router or on one of the BDI interfaces on the Cisco ASR 903 router, and delete the BDI interface running BFD on the Cisco ASR 903 router.
Page 265 Conditions: This issue is observed if a marking is present at the logical level in the egress direction, DM does not work. Workaround: Use the egress set at leaf or PHB level. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 266 Workaround: Use the no shutdown command bring up the controller and interfaces. CSCug99750 • Symptom: The Cisco ASR 903 router crashes when it accesses unpopulated data structures. Conditions: This issue is observed when you perform an IM OIR and use the shutdown and no shutdown commands.
Page 267 Workaround: Reload the router. CSCuh18503 • Symptom: BFD IPv6 sessions may not come up between Cisco ASR 9000 and Cisco ASR 903 routers. Conditions: This issue is observed when the packets sent from Cisco ASR 903 router have invalid UDP checksums.
Page 268 • Symptom: The interface stops forwarding traffic Conditions: This issue is observed when the TenGigabitEthernet interface is in WAN-PHY mode and R0 is active. Workaround: Use R1. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 269: Restrictions And Caveats In Cisco Ios Xe 3.11 Releases
Workaround—Solutions, if available, to counteract the caveat. • If you have an account on Cisco.com, you can also use the Bug Toolkit to find select caveats of any Note severity. To reach the Bug Toolkit, log in to Cisco.com and go to http://www.cisco.com/pcgi-bin/Support/Bugtool/launch_bugtool.pl.
Page 270: Open Caveats-Cisco Ios Xe Release 3.11S
Chapter Caveats in Cisco IOS XE 3.10S Releases Open Caveats—Cisco IOS XE Release 3.11S This section documents the unexpected behavior that might be seen with the Cisco ASR 903 router in Cisco IOS XE Release 3.11S. • CSCuh86847 Symptom: When MR-APS CEM feature is configured on the router, the traffic stops flowing on deletion and recreation of CEM groups and xconnects.
Page 271 CSCug92536 Symptom: PLATFORM-3-NOMAC traceback is seen on standby console. Conditions: This issue is seen when cem-acr is configured on a HA setup. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 272 Symptom: The interface goes down reporting loss of frame alarm. Conditions: This issue occurs on performing shutdown followed by a no shutdown on the PE and Workaround: Perform an OIR on CE side. CSCui22637 • Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 273 Symptom: The controller remains in disabled state after enabling the license. Conditions: This issue occurs on performing IM OIR or framing. Workaround: Disable the license and enable it. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 274 Symptom: The input error counter constantly increases in show platform infrastructure lsmpi command. Conditions:This problem occurs when the synchronous mode is configured on the interface of router. Workaround: There is no workaround. Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 275 Chapter Caveats in Cisco IOS XE 3.10S Releases Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 276 Chapter Caveats in Cisco IOS XE 3.10S Releases Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 277 Chapter Caveats in Cisco IOS XE 3.10S Releases Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 278 Chapter Caveats in Cisco IOS XE 3.10S Releases Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 279 Chapter Caveats in Cisco IOS XE 3.10S Releases Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...
Page 280 Chapter Caveats in Cisco IOS XE 3.10S Releases Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router OL-26630-08...

Cisco ASR 903 Release Notes

Release Notes for the Cisco ASR 903 Router

New Features in Cisco IOS XE 3.6S Releases

New Features in Cisco IOS XE 3.7S Releases

Chapter 4 New Features in Cisco IOS XE 3.8S Releases

Chapter 5 New Hardware Features in Cisco IOS XE Release 3.9(2)S

Chapter 6 New Features in Cisco IOS XE 3.10S Releases

Bidirectional Forwarding Detection Deterministic Hardware Offload

Broadcast and Multicast Suppression

IGMP Snooping

Licensing the OC-3 and OC-12 Interface Modules

Multichassis LACP

Pseudowire Group Switchover

Remote LFA FRR Protection for TDM and ATM Pseudowires

Remote LFA FRR and Labeled BGP PIC FRR Integration

VPLS over Remote LFA

Chapter 2 Limitations and Restrictions

Resolved Caveats-Cisco IOS XE Release 3.7(4)S

Open Caveats-Cisco IOS XE Release 3.7(3)S

Resolved Caveats-Cisco IOS XE Release 3.7(3)S

Open Caveats-Cisco IOS XE Release 3.7(2)S

Resolved Caveats-Cisco IOS XE Release 3.7(2)S

Open Caveats-Cisco IOS XE Release 3.7(1)As

Resolved Caveats-Cisco IOS XE Release 3.7(1)As

Open Caveats-Cisco IOS XE Release 3.7(0)S

Resolved Caveats-Cisco IOS XE Release 3.7(0)S

Chapter 4 Restrictions and Caveats in Cisco IOS XE 3.8 Releases

Open Caveats-Cisco IOS XE Release 3.8(2)S

Resolved Caveats-Cisco IOS XE Release 3.8(2)S

Open Caveats-Cisco IOS XE Release 3.8(1)S

Resolved Caveats-Cisco IOS XE Release 3.8(1)S

Open Caveats-Cisco IOS XE Release 3.8(0)S

Resolved Caveats-Cisco IOS XE Release 3.8(0)S

Chapter 5 Restrictions and Caveats in Cisco IOS XE 3.9 Releases

Chapter 6 Restrictions and Caveats in Cisco IOS XE 3.10 Releases

Restrictions and Caveats in Cisco IOS XE 3.11 Releases

Quick Links

Related Manuals for Cisco ASR 903

Summary of Contents for Cisco ASR 903

Table of Contents