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Configuring the Cisco NM-1A-T3/E3 Network
Module
OL-10215-01
First Published: June 28, 2007
The Cisco NM-1A-T3/E3 (or ATM T3/E3) network module provides Asynchronous Transfer Mode
(ATM) services on a T3 or E3 connection. This feature module explains how to configure the ATM
T3/E3 network module for each connection. The ATM T3/E3 network module is supported on
Cisco 2800 and Cisco 3800 routers and includes the following features:
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Finding Feature Information in This Module
Your Cisco IOS software release may not support all the features documented in this module. To reach
links to specific feature documentation in this module and to see a list of the releases in which each feature is
supported, see the
Finding Support Information for Platforms and Cisco IOS and Catalyst OS Software Images
Use Cisco Feature Navigator to find information about platform support and Cisco IOS and Catalyst OS
software image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. You do
not need an account on Cisco.com.
Contents
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© <year> Cisco Systems, Inc. All rights reserved.
ATM traffic management features including constant bit rate (CBR), variable bit rate (VBR),
available bit rate (ABR), unspecified bit rate (UBR), and UBR+
Classic IP over ATM encapsulation (RFC 1577)
Multiprotocol encapsulation over ATM adaptive layer 5 (AAL5) segmentation (RFC 1483)
Point-to-Point Protocol (PPP) over ATM
LAN Emulation (LANE)
"Feature Information for the Cisco ATM T3/E3 Network Module" section on page
Restrictions for the Cisco ATM T3/E3 Network Module, page 2
Information About the Cisco ATM T3/E3 Network Module, page 2
How to Configure the ATM T3/E3 Network Module, page 4
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Related Manuals for Cisco NM-1A-T3 - 1port Ds3 Atm Network Module
Summary of Contents for Cisco NM-1A-T3 - 1port Ds3 Atm Network Module
- Page 1 Finding Feature Information in This Module Your Cisco IOS software release may not support all the features documented in this module. To reach links to specific feature documentation in this module and to see a list of the releases in which each feature is supported, see the “Feature Information for the Cisco ATM T3/E3 Network Module”...
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Page 2: Virtual Circuits
The atm vc-per-vp command is not supported on the ATM T3/E3 network module. • Information About the Cisco ATM T3/E3 Network Module To configure the Cisco ATM T3/E3 network module, you should understand the following: ATM, page 2 • Permanent Virtual Circuits, page 3 •... -
Page 3: Permanent Virtual Circuits
In UNI mode, the user is the router and the network is an ATM switch. This is an important distinction. The Cisco router does not perform ATM-level call routing. Instead, the ATM switch does the ATM call routing, and the router routes packets through the resulting circuit. The router performs as the user and the LAN interconnection device at the end of the circuit, and the ATM switch performs as the network. -
Page 4: Classes Of Service
Configuring the Cisco NM-1A-T3/E3 Network Module How to Configure the ATM T3/E3 Network Module Classes of Service ATM resources can be specified dynamically on a per-connection basis (per SVC). The ATM T3/E3 network module supports four classes of service: •... - Page 5 Configuring the Cisco NM-1A-T3/E3 Network Module How to Configure the ATM T3/E3 Network Module DETAILED STEPS Command or Action Purpose Step 1 Enables privileged EXEC mode. enable Enter your password if prompted. • Example: Router> enable Step 2 Enters global configuration mode.
- Page 6 If the total bandwidth used by an interface is greater than 34 Mbps and the card type is changed from T3 to E3, the traffic shaping characteristics of the VCs will be changed. The Cisco IOS software will reconfigure the VCs so that the total allocated guaranteed bandwidth does not exceed the maximum allowable E3 bandwidth.
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Page 7: Configuring Pvcs
Configuring the Cisco NM-1A-T3/E3 Network Module How to Configure the ATM T3/E3 Network Module Enabling the ATM Interface To enable the ATM T3/E3 interface, perform the following tasks, starting in global configuration mode. SUMMARY STEPS interface ATM slot atm clock internal... - Page 8 Configuring the Cisco NM-1A-T3/E3 Network Module How to Configure the ATM T3/E3 Network Module Creating a PVC To create a PVC on the ATM interface and enter interface-ATM-VC configuration mode, use the following command, beginning in interface configuration mode: Command...
- Page 9 Configuring the Cisco NM-1A-T3/E3 Network Module How to Configure the ATM T3/E3 Network Module Configuring the AAL and Encapsulation Type To configure the ATM adaptation layer (AAL) and encapsulation type on a VC, use the following command, beginning in interface-ATM-VC configuration mode:...
- Page 10 Configuring the Cisco NM-1A-T3/E3 Network Module How to Configure the ATM T3/E3 Network Module Command Purpose Configures real-time VBR. Router(config-if-atm-vc)# vbr-rt peak-rate average-rate burst Example: Router(config-if-atm-vc)# vbr-rt 10000 3000 64 Configures CBR. Router(config-if-atm-vc)# cbr rate Example: Router(config-if-atm-vc)# cbr 10000 The -pcr, -scr, and -mcr arguments are peak cell rate, sustainable cell rate, and guaranteed minimum cell rate, respectively, in kbps.
- Page 11 Configuring the Cisco NM-1A-T3/E3 Network Module SVCs SVCs To use SVCs, complete the following sections: Configuring Communication with the ILMI • Configuring the PVC That Performs SVC Call Setup • Configuring the NSAP Address • Creating an SVC • Configuring Communication with the ILMI In an SVC environment, you must configure a PVC for communication with ILMI so that the router can receive simple network management protocol (SNMP) traps and new network prefixes.
- Page 12 Configuring the Cisco NM-1A-T3/E3 Network Module SVCs Configuring the PVC That Performs SVC Call Setup ATM uses out-of-band signaling. There is one dedicated PVC between the router and the ATM switch, over which all SVC call establishment and call termination requests flow. After a call is established, data transfer occurs over the SVC, from router to router.
- Page 13 Configuring the Cisco NM-1A-T3/E3 Network Module SVCs Configuring the NSAP Address Every ATM interface involved with signaling must be configured with a network service access point (NSAP) address. The NSAP address is the ATM address of the interface and must be unique across the network.
- Page 14 Configuring the Cisco NM-1A-T3/E3 Network Module SVCs Creating an SVC To create an SVC, use the following commands beginning in interface configuration mode: SUMMARY STEPS svc [name] nsap address encapsulation aal5encap protocol protocol protocol-address [[no] broadcast] DETAILED STEPS Command Purpose...
- Page 15 Configuring the Cisco NM-1A-T3/E3 Network Module Customizing the ATM T3/E3 Network Module Customizing the ATM T3/E3 Network Module You can customize the ATM T3/E3 network module. The features you can customize have default values that will probably suit your environment and do not need to be changed. However, you might need to enter configuration commands, depending on the requirements for your system configuration and the protocols you plan to route on the interface.
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Page 16: Configuration Example
Configuring the Cisco NM-1A-T3/E3 Network Module Configuration Example Setting the Loopback Mode To loop all packets back to your ATM interface instead of to the network, use the following command in interface configuration mode: Command Purpose Sets loopback mode. Router(config-if)# loopback... - Page 17 Configuring the Cisco NM-1A-T3/E3 Network Module Recommendations for Watermark Settings Traffic Pattern The following pageant configuration was used in bi-directional way for continuous burst on traffic • streams: packet length - 300 bytes and 1400 bytes: For 300 bytes data traffic from pageant, the following rates were used: –...
- Page 18 Configuring the Cisco NM-1A-T3/E3 Network Module Recommendations for Watermark Settings Example of the Router Configuration Used for Watermark Testing The following example provides the router configuration that was used for the watermark testing. Table 2 Example of the Router Configuration Used for Watermark Testing...
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Page 19: Additional References
Configuring the Cisco NM-1A-T3/E3 Network Module Additional References Table 2 Example of the Router Configuration Used for Watermark Testing UUT1 (3845) UUT2 (3845) interface ATM1/0 interface ATM1/0 mtu 1500 mtu 1500 bandwidth 5000 bandwidth 5000 no ip address no ip address... -
Page 20: Technical Assistance
No new or modified MIBs are supported by this To locate and download MIBs for selected platforms, Cisco IOS feature, and support for existing MIBs have not been releases, and feature sets, use Cisco MIB Locator found at the modified by this feature. following URL: http://www.cisco.com/go/mibs... -
Page 21: Command Reference
Configuring the Cisco NM-1A-T3/E3 Network Module Command Reference Command Reference This section documents only commands that are new or modified. debug atm t3e3, page 21 • debug atm t3e3 To display debug messages for ATM T3/E3 network modules, use the debug atm t3e3 command in privileged EXEC mode. - Page 22 Configuring the Cisco NM-1A-T3/E3 Network Module debug atm t3e3 debug atm t3e3 pa command Use the debug atm t3e3 pa command on those platforms supporting OIR to display the indications generated when the port adapter (the ATM T3/E3 network module) is subjected to OIR. This command is used principally during the port adapter initialization phase.
- Page 23 Configuring the Cisco NM-1A-T3/E3 Network Module debug atm t3e3 *Jun 27 15:14:13.456: word 2: 0x18001060 *Jun 27 15:14:13.456: word 3: 0x00090022 Table 4 describes the significant fields shown in the display. Table 4 debug atm t3e3 flow Field Descriptions Field Description Jun 27 15:14:13.456:...
- Page 24 Configuring the Cisco NM-1A-T3/E3 Network Module debug atm t3e3 Router(config-if)# *Jun 27 22:12:28.816: ATM2/0: Setup_VC: vc:3 vpi:2 vci:2 *Jun 27 22:12:28.816: ATM2/0: Open_Channel(RSY): CH (1), VPI (2), VCI (2) *Jun 27 22:12:28.816: ATM2/0: HI/LO watermarks: 526/263; PeakRate: 149760 *Jun 27 22:12:28.816: ATM2/0: Open_Channel(SEG): CH (1), VPI (2), VCI (2) *Jun 27 22:12:28.820: ATM2/0: Setup_Cos: vc:3 wred_name:- max_q:0...
- Page 25 Configuring the Cisco NM-1A-T3/E3 Network Module debug atm t3e3 Table 5 describes the significant fields shown in the display. Table 5 debug atm t3e3 trace Field Descriptions Field Description Jun 27 22:15:09.284: Date or time stamp for the command dialog.
- Page 26 Table 6 lists the release history for this feature. Not all commands may be available in your Cisco IOS software release. For release information about a specific command, see the command reference documentation. Use Cisco Feature Navigator to find information about platform support and software image support.