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14
Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
OL-26630-12
Chapter Restrictions and Caveats in Cisco IOS XE 3.6S Releases
Caveats in Cisco IOS XE 3.6S Releases
Symptoms: The router displays the following message when executing a Stateful Switchover
(SSO): %TRANSCEIVER-3-CHECKSUM_ERROR
Conditions: Occurs intermittently when the router is in SSO mode and performing a switchover
between RSPs. The console displays this message repeatedly on the new active RSP.
Workaround: There is no workaround.
• CSCty26726
Symptoms: The IOS kernel crashes.
Conditions: Occurs following a reload on a dual RSP system.
Workaround: Power cycle the router.
• CSCty29449
Symptoms: The router crashes.
Conditions: The issue can occur when you shut down and reenable an interface module.
Workaround: There is no workaround.
• CSCty35365
Symptoms: The router drops traffic passing across ATM MPLS layer 2 virtual circuits (VCs).
Conditions: Occurs when you increase the scale above 100 VCs.
Workaround: There is no workaround.
• CSCty37479
Symptoms: The router experiences line protocol flapping on serial interfaces.
Conditions: Occurs with the A900-IMA4OS and A900-IMA16D interface modules when the router
is passing high volumes of HDLC or PPP traffic.
Workaround: Configure the no keepalive command on serial interfaces.
• CSCty47288
Symptoms: The router does not use a standby BITS clock source even when show commands
indicate that the router has selected this clock source.
Conditions: Occurs when you configure a standby BITS clock source as an input clock source.
Workaround: There is no workaround.
• CSCty48493
Symptoms: The ASR 903 may reload with when acting as a hybrid clock.
Conditions: Occurs under the following conditions:
–
The PLL mode is TOP CLIENT
– The session is in ACQUIRING state
–
You issue the no ptp clock or domain 0 hybrid command.
Workaround: There is no workaround; however the issue occurs rarely.
•
CSCty49157
Symptoms: Some members in an IMA group do not become active even though the interface
controllers are up.
Conditions: Occurs when you perform an OIR on a remote line card or when the standby RSP
becomes the active RSP.