
676
Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8
OL-10394-05 Rev. R0
Workaround: There is no workaround.
• CSCsr44492
Symptoms: Certain QoS configurations are such that the hierarchical queuing framework (HQF)
layer is collapsed and then later modification to those configuration causes the HQF layer to
un-collapse. This may put the router into an unpredictable state or cause some QoS parameter values
to be wrong.
Conditions: Occurs under the following scenario:
1. Configure a policy as follows:
policy-map p1 class class-default sh av <>
2. Attatch the poliy to logical target.
3. Modify the policy as follows:
policy-map p1 class prec1 bandwidth <>
This causes the HQF layer to un-collapse, which the router will not handle properly.
Workaround: Reload the router.
• CSCsr49701
Symptoms: Router may reset after removing a large VPN routing/forwarding (VRF) configuration.
Conditions: Occurred on a Cisco 10000 Series Router running Cisco IOS Release 12.2(33)XNA
following the removal of a VRF with 200,000 routes.
Workaround: The issue does not occur when a VRF of 160,000 routes was removed. Do not allow
the number of routes to exceed this number.
• CSCsr55713
Symptoms: A crash occurs.
Conditions: The crash is caused by a ping across an ISATAP tunnel. The symptom is observed only
in Cisco IOS Release 12.4(15)T7 on the Cisco 7200 (it is not known to affect other platforms), since
the crash is dependent on the Cisco IOS memory map (which varies with each image).
Workaround: There is no workaround.
• CSCsr55922
Symptoms: The EIGRP IPv6 process may incorrectly select a router-ID from the 127.0.0.0 address
range.
Symptoms: The same router-ID may be selected on two separate Cisco routers configured for
EIGRP IPv6. External prefixes advertised by one of the EIGRPv6 routers will be ignored by the
receiving EIGRPv6 router due to the fact the routerID contained in the external data portion of the
prefix matches the receiving routerID; a loop prevention method.
Workaround: Manually configure a router-ID under the EIGRP IPv6 process with router-id address
command.
• CSCsr62811
Symptoms: An ASR 1000 series router may experience an unforced system reload after operating
for several hours.
Conditions: The system must be running for several hours and have QoS configured on one or more
interfaces.
Workaround: There is no workaround.
Further Problem Description: This problem arises from a memory leak. Closely monitor the
system’s memory usage to ensure that it is not running low.
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