Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Manual de usuario Pagina 182

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628
Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8
OL-10394-05 Rev. R0
Symptoms: LACP L3 POCH members flap, getting unbundled and bundled back again.
Conditions: Global native VLAN tagging has to be enabled, and L3 POCH interface should have a
sub-interface configured under it.
Workaround: Disable global VLAN tagging.
CSCsy17724
Symptoms: After a reload, CPU on the router remains high and does not recover on its own.
Conditions: This issue was observed on a reload of a Cisco 7600 router with Supervisor 720. The
system had a scaled configuration with a large number of VRF’, sub-interfaces and some Virtual
Private LAN Services (VPLS) PW. BGP and ISIS routing protocols were also in use. The high CPU
is seen in the CEF background process.
Workaround: An SSO switchover or a system reload can clear the problem.
CSCsy22193
Symptoms: After stateful switchover (SSO), adjacency mismatch and traffic failure occur on ES20
sub-interfaces.
Conditions: This happens when egress QOS/ACL policy is configured on ES20 sub-interface.
Workaround: Perform a shut/no shut on the ES20 interface.
CSCsy24369
Symptoms: After removing “priority 30” from policy-map queuing_child, an attempt to add it back
fails with the following message:
Configured Percent results in out of range kbps. Allowed range is 8-622000. The present CIR value
is 6.
Conditions: Occurs with the following configuration:
Configure the following policy-map:
Policy Map queuing_child
Class ip_prec_1
priority 30 (%)
Class ip_prec_2
bandwidth remaining 20 (%)
Class ip_prec_3
bandwidth remaining 30 (%)
Class ip_prec_4
bandwidth remaining 49 (%)
Policy Map Dest
Class Dest
Policy Map queuing
Class class-default
Average Rate Traffic Shaping
cir 5000000 (bps)
service-policy queuing_child
Workaround: There is no workaround.
CSCsy24676
Symptoms: On occasion, a false positive is returned on a file system failure. File operation is
deemed successful when, in fact, it has failed.
Conditions: This problem occurs when the file system device returns an error and the code follows
the path in the file system buffer cache where the error is masked and converted to a success code.
This problem is likely to show up if there is a device error during the write. The device error may
be due to bad media or an OIR (although it is very unlikely during an OIR).
Workaround: There is no workaround.
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