Cisco ASR 903 Release Notes

8
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
• CSCua13924
Symptoms: The convergence time for IS-IS IPv4 Loop Free Alternate Fast Reroute (LFA FRR) is
greater than 50 milliseconds.
Conditions: Occurs when IS-IS LFA FRR reconverges following an interface shutdown while
maintaining a large number of routes.
Workaround: There is no workaround.
• CSCua14704
Symptoms: The router stops passing traffic on a bridge-domain interface (BDI).
Conditions: Occurs when you apply the ip mtu command to a BDI interface for the first time.
Workaround: Remove and re-apply the ip mtu command.
• CSCua73104
Symptoms: The router does not increment QoS port shaper policy counters displayed by the show
policy interface command.
Conditions: Occurs when you configure
– A class-default policy on a physical interface
– A class-based policy on an EVC interface
Workaround: There is no workaround; however, the router applies the QoS policy normally.
• CSCua95777
Symptoms: The router drops SAToP pseudowire traffic for 10 seconds following a core link failure.
Conditions: Occurs when the TDM controller generates an AIS and LOF alarm following a core
link failure; the router drops traffic for 10 seconds after generating the alarm.
Workaround: There is no workaround.
• CSCua97383
Symptoms: A virtual circuit (VC) with an xconnect configuration stops forwarding traffic.
Conditions: Occurs with the 3.6(1) software under the following conditions:
– You add and remove EFPs on an interface.
– You remove and restore an interface configuration.
– You are using multiple VTY sessions simultaneously to configure the router.
Workaround: Reload the router; you can use either of the following methods to avoid this issue:
– Use a single VTY session for configuration.
– Apply the configuration mode exclusive command to prevent multiple VTYs from entering
configuration mode at once.
• CSCub10414
Symptoms: The router displays interface module (IM) traceback errors.
Conditions: Occurs with the GLC-SX-MMD or GLC-LH-SMD (Catskills) SFPs under the
following scenarios:
– IM reload
– SSO
– Router reload

Cisco ASR 903 Specifications

General

Brand	Cisco
Model	ASR 903
Category	Network Router
Language	English