Cisco ASR 903 Release Notes page 193

CSCue44876
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Symptom:
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Conditions: This issue occurs on activating SSO after an IM OIR when configuring PoS interface
in OC-12 mode.
Workaround: There is no workaround.
More Info: This issue is not seen in OC-3 mode.
CSCue61850
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Symptom: Maintenance End Points (MEPs) start flapping when no shutdown command is issued
on EVC bridge-domain (BD) or port channel interface running CFM.
Conditions: This issue occurs when more than 256 CFM sessions are configured.
Workaround: Configure fewer CFM sessions (50 to 100).
CSCue67835
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Symptom: OSPF flaps when you set the dead interval timer as 6 seconds and hello interval as 2
seconds.
Conditions: This issue is observed when you perform an SSO.
Workaround: Use the default OSPF hello timers.
CSCue69818
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Symptom: The show inventory command displays a wrong serial number.
Conditions: Inventory is managed by the "main serial number". However, when using the show
inventory command for Redundant Power System (RPS) and IM, "PCB serial number" is displayed
instead of the "main serial number".
Workaround: Use the show diag all eeprom detail command to list the correct serial number.
CSCue75372
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Symptom: Time-Hog traceback seen after router or IM reloads.
Conditions: This issue occurs on bootup of IM or router.
Workaround: There is no workaround.
• CSCue97180
Symptom: The Cisco ASR 903 Router sometimes crashes when used as a multicast VPN (mVPN)
Encap PE Router.
Conditions: This issue occurs in an mVPN network on exceeding core multicast distribution tree
(MDT) scale of 1K with more than 20 virtual routing and forwarding (VRFs) on a flap access
interface of a PE Router.
Workaround: Do not exceed more than 1K core MDT scale Work around for a crash is unavailable.
CSCuf02007
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Symptom: Continuous SEMHOG is seen on the router console with incremental sync failure and
IOMD crashes on OC-3 IM.
Conditions: Router receives continuous SEMHOG for multiple processes.
OL-26630-08
Packet-over-SONET (PoS) interface on the high availability (HA) system continues flapping
Complete traffic is dropped
PoS interface of the remote Cisco ASR 903 Router remains in up or down state.
Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
Caveats in Cisco IOS XE 3.9S Releases
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