Cisco ASR 900 Series Release Notes

3
Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
OL-26630-12
Chapter
Caveats in Cisco IOS XE 3.12S Releases
Open Caveats—Cisco IOS XE Release 3.12S
This section documents the unexpected behavior that might be seen with the Cisco ASR 900 router in
Cisco IOS XE Release 3.12.S.
• CSCun13151
Symptom: Egress traffic drop was observed on an ACR ATM interface in PVP mode.
Conditions: This issue occurs on the ACR ATM interface after performing SSO.
Workaround: There is no workaround.
Resolved Caveats—Cisco IOS XE Release 3.12S
This section documents the issues that have been resolved in Cisco IOS XE Release 3.12S.
• CSCui50577
Symptom: Traffic drop observed on the router.
Conditions: This issue occurs after performing an IM OIR.
Workaround: There is no workaround.
• CSCuj30644
Symptom: Multicast does not function in scaled mode with SM mode and BDI in core.
Conditions: This issue was seen in the scaled mode.
Workaround: Execute the no ip igmp snooping command on the router to forward multicast
traffic.
• CSCuj32358
Symptom: Multicast packets with TTL=0 are forwarded and not dropped.
Conditions: This issue occurs with multicast incoming traffic with TTL=0.
Workaround: There is no workaround.
• CSCuj42208
Symptom: Layer 3 multicast traffic drop was observed on the trunk port.
Conditions: This issue occurs when multicast is converged, and a shutdown followed by a no
shutdown command is executed on the multicast router interface (mrouter port).
Workaround: Execute command clear ip mroute command to clear IPv4 multicast routes and the
command clear ipv6 pim topology to clear IPv6 multicast routes.
• CSCuj43701
Symptom: Multicast receivers received duplicate traffic.
Conditions: This issue occurs in the following conditions:
– Executing a shutdown command or default shutdown command on the last EFP under a
bridge-domain configured on the port-channel interface.
– Executing a shutdown or default shutdown command on the last TEFP under a bridge-domain
configured on the port-channel interface.
– Executing a shutdown or default shutdown command on the port-channel and configuring an
EFPor TEFP without waiting for at least 3 minutes.

Cisco ASR 900 Series Specifications

General

Brand	Cisco
Model	ASR 900 Series
Category	Network Router
Language	English