Cisco ASR 903 Release Notes page 60

Caveats in Cisco IOS XE 3.6S Releases
CSCua13924
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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
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Symptoms: The router does not increment QoS port shaper policy counters displayed by the show
policy interface command.
Conditions: Occurs when you configure
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Workaround: There is no workaround; however, the router applies the QoS policy normally.
CSCua95777
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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
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Symptoms: A virtual circuit (VC) with an xconnect configuration stops forwarding traffic.
Conditions: Occurs with the 3.6(1) software under the following conditions:
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Workaround: Reload the router; you can use either of the following methods to avoid this issue:
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CSCub10414
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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:
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Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
8
A class-default policy on a physical interface
A class-based policy on an EVC interface
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.
Use a single VTY session for configuration.
Apply the configuration mode exclusive command to prevent multiple VTYs from entering
configuration mode at once.
IM reload
SSO
Router reload
Chapter Restrictions and Caveats in Cisco IOS XE 3.6S Releases
OL-26630-08