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Cisco Bug: CSCtc76922 - FF fails on 6708 when first packet is recirculated.

Last Modified

Jun 27, 2018

Products (1)

  • Cisco Catalyst 6000 Series Switches

Known Affected Releases

12.2(33)SXH6 12.2(33)SXI3 15.0(1)SY4 15.1(1)SY2.1 15.1(2)SY 15.2(1)SY1.1 15.2(1)SY4.9 15.2(2.1)

Description (partial)

  Flood to fabric fails when a mac-address is moved from a DFC enabled 
  module to a 6708/6716 module and the first packet enterting the new module needs
  to be recirculated. Only the 6708 where the traffic enters updates it's CAM
  For example, this can occur when VMotioning a virtual server between modules.
  If the switch has Out-of-Band MAC Synchronization enabled (under "conf t"
  mode, "mac-address-table sync" command) the mac-address tables should be
  synced within 160 seconds.
  - Cat6500/Cisco 7600 with Sup720/PFC3B and 6708 or 6716 module.
  - The first packet on the 6708/6716 during mac move is recirculated.
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