Cisco ASR 903 Release Notes page 74

Caveats in Cisco IOS XE 3.6S Releases
CSCty34812
•
Symptoms: The router experiences traffic loss for between 10 and 50 seconds during RSP
switchover.
Conditions: Occurs when you perform an RSP switchover on a router with a ten gigabit Ethernet
interface module.
Workaround: There is no workaround.
• CSCty35365
Symptoms: The router drops traffic passing across ATM MPLS layer 2 virtual circuits (VCs).
Conditions: Occurs when you increase the scale above 100 VCs.
Workaround: There is no workaround.
CSCty37479
•
Symptoms: The line protocol repeatedly drops (flaps) on serial interfaces.
Conditions: Occurs when you configure HDLC or PPP on serial interfaces on the A900-IMA4OS
or A900-IMA16D interface modules when the router is passing high traffic volumes.
Workaround: Configure the no keepalive command on serial interfaces.
CSCty38638
•
Symptoms: The router cannot download the ACL database.
Conditions: Occurs when the router is configured with an ACL containing more than 400 access
control entries (ACEs).
Workaround: There is no workaround.
CSCty39033
•
Symptoms: Interface modules stop passing traffic during an RSP switchover.
Conditions: Occurs when the router switches over to the standby RSP while traffic is passing on
interface modules.
Workaround: There is no workaround.
CSCty41536
•
Symptoms: The router crashes during when SNMP uses a high percentage of CPU for an extended
period.
Conditions: Occurs when SNMP is running the background with an average of 50% CPU utilization
for more than 8 hours.
Workaround: Reduce the load on the CPU using SNMP poll and SNMP walk.
CSCty42336
•
Symptoms: BFD sessions flap on the router.
Conditions: Occurs when the router is running IP BFD sessions in echo mode with 64 200ms X3
timers.
Workaround: There is no workaround.
CSCty42867
•
Symptoms: The router crashes.
Conditions: Occurs when you apply traffic soaking to the router with L2VPN services configured.
Workaround: There is no workaround.
Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
22
Chapter Restrictions and Caveats in Cisco IOS XE 3.6S Releases
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