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Cisco Bug: CSCuq74531 - Wrong mac acl counters during acl update

Last Modified

Feb 11, 2018

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases


Description (partial)

There will be mismatch of packets counters between interface and acl statistics, when multiple ACL inplace modifications happened before 'show mac access-list' for acl applied on an interface with high rate traffic going on.

The issue happened in a very specific scenario that, before PI/aclmgr queried ACL-PD for statistics there was two continuous  ACE modification, in such cases PD will typically lose the initial stats since the ACL h/w statistics are not preserved during modification due to the h/w indexes change . While because these modification happened before PI query PD for the statistics, the PD counters during this interval will be lost, which cause the mismatch between interface and acl counters.
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