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Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
OL-26630-08
Chapter
Caveats in Cisco IOS XE 3.8S Releases
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.
•
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:
Signaling protocol: LDP, peer unknown
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.