Cisco ASR 903 Release Notes page 174

Caveats in Cisco IOS XE 3.8S Releases
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CSCud38592
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Symptom: The router displays an fman_fp crash error and crashes.
Conditions: Occurs when the router is running Remote LFA with a high number of prefixes and
there is an interface flap on the primary path.
Workaround: There is no workaround.
CSCud38668
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Symptom: The OC-3 interface module crashes.
Conditions: Occurs when you issue the show platform software agent iomd 1/0 driver peek
command.
Workaround: There is no workaround.
CSCud40930
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Symptom: Some interfaces within a bridge-domain are unable to send outbound L3 multicast
traffic.
Conditions: Occurs when the bridge-domain contains EFP interfaces, some of which are on a
port-channel. The issue can also occur after a router reload.
Workaround: Issue a shutdown/no shutdown on the BDI interface.
CSCud42315
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Symptom: The OC-3 interface module crashes.
Conditions: Occurs when you apply the forward-alarm ais command on a T1 controller.
Workaround: There is no workaround.
CSCud43580
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Symptom: The router does not apply the bandwidth remaining percent command within a QoS
policy in some instances.
Conditions: The issue can occur occasionally when:
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Workaround: Apply the following workaround:
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• CSCud44640
Symptom: The router displays a traceback error when there one power supply unit slot is empty.
Conditions: Occurs during boot.
Workaround: There is no workaround.
CSCud44768
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Symptom: Multilink bundles and member links flap when passing traffic.
Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
32
Use Interior Gateway Protocol (IGP) instead of static IP routes.
Shut down one of the ECMP paths.
There is a large discrepancy in bandwidth remaining values between QoS classes
The classes containing the bandwidth remaining statements are oversubscribed at a low rate
or have a low queue-limit.
Increase the queue-limit value to 120 kilobytes or above.
If the QoS configuration uses WRED, increase the minimum threshold value.
Alter the bandwidth remaining values to reduce the ratio between values.
Chapter
OL-26630-08