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Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
OL-26630-08
Chapter Restrictions and Caveats in Cisco IOS XE 3.6S Releases
Caveats in Cisco IOS XE 3.6S Releases
Symptoms:
The OC-3 interface module crashes when you perform multiple RSP switchovers.
Conditions
: Occurs when the router is running a CEM configuration configured at full scale on all
ports and passing traffic.
Workaround
: There is no workaround.
•
CSCty51175
Symptoms:
Serial interfaces configured with HDLC display false LOF or AIS alarms.
Conditions:
Occurs when you configure a high volume of serial interfaces using HDLC.
Workaround:
Remove and re-apply the serial interface configuration.
•
CSCty51257
Symptoms:
The T1/E1 interface module changes to inserted state during an in-service software
upgrade (ISSU), causing the interface to fail and the router to generate a core file.
Conditions:
Occurs when you perform an in-service software upgrade (ISSU) on a router with a
T1/E1 interface module.
Workaround:
Issue the shutdown command on the interface module before beginning ISSU; after
ISSU is complete, issue the no shutdown command on the interface module.
•
CSCty51984
Symptoms:
CEM circuits become inactive.
Conditions:
Occurs when you perform an OIR, reload, or when you reconfigure a CEM circuit on
the router. The issue occurs more consistently when the router is running more than 300 CEM
circuits.
Workaround:
Issue the
clear xconnect all
command.
•
CSCty51990
Symptoms:
The router may crash or restart; the console displays a
SW_WDOG: expired
message.
Conditions:
Occurs under the following conditions:
–
The router is configured with 63 or more instances of a unique EVC configured with a unique
bridge domain interface (BDI).
–
The router is sending IGMP joins to one multicast group.
–
You perform a shutdown/no shutdown on the interface sending IGMP join messages.
–
You perform an OIR on the router.
Workaround:
There is no workaround.
•
CSCty57746
Symptoms:
The
show environment
command displays incorrect values, including P0 and P1
voltages, PSU status, PSU voltage, and critical alarms.
Conditions
: Occurs when you apply the
show environment
command.
Workaround
: There is no workaround.
•
CSCty57751
Symptoms:
The router crashes.
Conditions
: Occurs under any of the following conditions:
–
You perform an OIR on an interface module.
–
You issue the no ppp multilink command on all MLP member links.