Resolved Caveats-Cisco Ios Xe Release 3.8(0)S - Cisco ASR 900 Series Release Notes

Chapter
Resolved Caveats—Cisco IOS XE Release 3.8(0)S
This section documents the issues that have been resolved in Cisco IOS XE Release 3.8(0)S.
•
•
•
•
•
•
•
OL-26630-12
CSCty41692
Symptoms: Standby PRE crashes when you add an IPV4 VRF AF on the active PRE. The issue does
not occur on the active PRE.
Conditions: Occurs when you remove and re-apply a configuration when BGP is in read-only mode.
Workaround: Once BGP exits read-only mode, this issue will not happen.
CSCty85926
Symptoms: The VC (VPLS/EoMPLS) stays down and displays the following message in the show
mpls l2 vc detail command:
Conditions: Occurs if you configure LDP GR; do a SSO switchover and configure the VC after the
switchover is complete.
Workaround: There is no workaround; reload the switch.
CSCtz96504
Symptoms: Backup VCs remain down after SSO.
Conditions: Occurs at high scale, such as when you create 500 primary and 500 backup VCs.
Workaround: You can use the clear xconnect peerid peerid of the PW vcid vcid command to bring
the backup VCs to an SB state; however, this is not usually recommended.
CSCtz98347
Symptoms: When IS-IS is configured to run level-2, IS-IS LFA does not create repair path if the
total metric to a prefix is 1024.
Conditions: Seen with 15.2(2)S and when the IS-IS metric is more than 1024 and configured with
level-2.
Workaround: Ensure the total metric to a prefix is less than 1024, or use narrow metric setting
CSCua27852
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.
CSCua61330
Symptoms: Traffic loss is observed during switchover if BGP graceful restart is enabled or the next
hop is learned by BGP.
Conditions: This symptom occurs on a Cisco router running Cisco IOS XE Release 3.5S.
Workaround: There is no workaround.
CSCua66870
Symptoms: When changing RPF neighbor (S,G) in PIM-dense mode, OIF on (*,G) is pruned
unexpectedly.
Conditions: Occurs when you use PIM-dense mode.
Workaround: There is no workaround.
Signaling protocol: LDP, peer unknown
Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
Caveats in Cisco IOS XE 3.8S Releases
43