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Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
OL-26630-12
Chapter Restrictions and Caveats in Cisco IOS XE 3.6S Releases
Caveats in Cisco IOS XE 3.6S Releases
Conditions: The issue can occur when you perform an online insertion and removal (OIR) of an
OC-3 interface module.
Workaround: Perform a hard OIR (IM replacement) followed by a soft OIR (RSP switchover) on
the router.
•
CSCty24143
Symptoms: The router does not pass IPv6 OSPF traffic.
Conditions: Occurs when the router passes traffic at the full line rate of a link.
Workaround: Reduce the traffic rate by 10%.
•
CSCty26726
Symptoms: The IOS kernel crashes.
Conditions: Occurs following a reload on a dual RSP system.
Workaround: Power cycle the router.
•
CSCty28986
Symptoms: A configuration with a high number of down MEPs does not function properly.
Conditions: Occurs when you configure 500 or more down MEPs with 500 or more xconnect
configurations between service instances.
Workaround: Configure no more than 300 CFM sessions.
•
CSCty29449
Symptoms: The router crashes.
Conditions : The issue can occur when you shut down and reenable an interface module.
Workaround : There is no workaround.
•
CSCty34054
Symptoms: The router displays CPU utilization traceback messages and drops all multicast traffic
for 20–50 seconds.
Conditions: Occurs under the following conditions:
– Multicast is enabled with more than 500 multicast groups
–
The router is using RSP1B in SSM mode
– BDI is configured on the access side of the router
–
There are 24 EFPs on each bridge domain
– You enter a shutdown command on the access interface.
Workaround: There is no workaround.
• CSCty34521
Symptoms: The router does not pass CFM traffic over an Ethernet CFM cross-connect.
Conditions: Occurs under the following conditions:
–
There is a CFM xconnect between two Cisco ASR 903 Router devices
– You perform an OIR and set a default interface.
Workaround: Do not continuously perform an OIR and set a default interface.