Cisco ASR 903 Release Notes

22
Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
OL-26630-08
Chapter Restrictions and Caveats in Cisco IOS XE 3.6S Releases
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 ASR 903 Specifications

General

Form Factor	Modular
Storage Temperature	-40°C to 70°C (-40°F to 158°F)
Humidity	5% to 95% non-condensing
Redundancy	Yes, redundant power supplies and route processors
Operating System	Cisco IOS XE
Power Supply	AC or DC
Switching Capacity	240 Gbps
Operating Temperature	-40°C to 65°C (-40°F to 149°F)
MTBF	200, 000 hours
Supported Protocols	IPv4, IPv6, MPLS, L2VPN, L3VPN
Interfaces	Gigabit Ethernet, 10 Gigabit Ethernet, T1/E1