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Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
OL-26630-08
Caveats in Cisco IOS XE 3.9S Releases
–
Shut down one of the ECMP paths.
• CSCud38589
Symptoms: DMM Session Stops Working
Conditions: DMM configured on BD UP MEP, with redundant links on the Core side, which are in
STP Fwding / Blocked state, Issue seen when the STP Fwd Port is shut.
Workaround: restart the IP SLA session or unshut the port and bring it FWD state
• CSCud38880
Symptoms: IPv6 traffic drop post SSO with MetroIP services license.
Conditions: 1. Start bidirectional IPv6 traffic on ASR903 with dual RSP and MetroIP services
license, 3.7.1a. Put at least 3-4 streams each running at 10Mbps 2. Force switchover " redundancy
force switchover" 3. IPv6 traffic will drop for 4-5 seconds. If you see drops in few milliseconds, then
try adding more traffic. Issue is consistently recreatable.
Workaround: Upgrade the license to MetroAgg, add v6 static neighbor on the port facing test set
and force switchover, now there will be no ipv6 traffic loss.
• CSCud41217
Symptoms: Multicast traffic dropped on 903.
Conditions: The following l2 configuration are there. There are 3 satellites connected in the setup,
only 903 satellite interfaces are showed here.All interfaces are in the same bridge domain. When
sent the mcast traffic from 2/4, it is expected that all the satellite interface would received the traffic.
But the two 903 satellite interfaces didn’t receive the traffic, the other interfaces from other satellite
were fine.
2/4 --------gi0/3/0/11 PE1 gi400/0/2/1 --------3/2 gi400/0/3/1 --------7/4 ..... (901, 9000v satellite
interfaces are omitted)
2/4 sent (225.1.1.1, 192.10.1.1) at the rate of 2000 pps.
Workaround: No workaround.
• CSCud44768
Symptom: Multilink bundles and member links flap when passing traffic.
Conditions: Occurs under the following conditions:
–
You configure more than 210 MLPPP bundles with one member link per bundle or 16 bundles
with 16 member links each.
–
The line is operating at a 64 or 128 byte line rate
Workaround: There is no workaround.
• CSCud48356
Symptoms: Nile Manager crash seen while configuring service instance
Conditions: After applying mpls tp config on back to back consoles
Workaround: There is no workaround.
• CSCud50944
Symptom: The router drops traffic on an MLPPP bundle.
Conditions: Occurs following a reload while the router is passing traffic close to the line rate. The
issue occurs less frequently with lower traffic rates.
Workaround: Issue a shutdown/no shutdown on multilink interface.
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