Cisco ASR 900 Series Release Notes page 276

Caveats in Cisco IOS XE 3.10S Releases
Workaround: Remove the ethernet cfm global command and reapply it after the port-channel
member links to bundle. Alternatively, configure PTP clock synchronization.
• CSCud38833
Symptom: When you configure the ACR CEM interfaces, tracebacks are displayed and the serial
interface remains down.
Conditions: This issue is observed when you create a second CEM circuit under the same controller
and delete the CEM circuit immediately.
Workaround: There is no workaround.
• CSCud41297
Symptom: Multicast snooping traffic drops after removing and reconfiguring the querier EFP on
1000 groups.
Conditions: This issue is observed when you remove and reconfigure querier EFP with more than
500 multicast routs.
Workaround: There is no workaround.
• CSCud43718
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
22
Chapter
OL-26630-12