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Cisco Bug: CSCuo93591 - MAC aging value fails to update in NXOS

Last Modified

Feb 16, 2018

Products (1)

  • Cisco Unified Computing System

Known Affected Releases

2.2(1c)A

Description (partial)

Symptom:
A Fabric Interconnect can exhibit behavior where the mac address table aging time can get stuck at 300 in End-host mode, and you can not change it.  The default in End-host mode is 14,500.  This can cause connectivity problems if the upstream devices have arp timers configured for less than this.

Conditions:
This has been experience on a 6100 series Fabric Interconnect running 2.1(1d).
Issue was also observed on 6200 series FI and it was resolved after upgrading to 2.2.6e.
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