Preview Tool

Cisco Bug: CSCup87407 - Quad Sup720 VSS unicast flooding on orphaned ports

Last Modified

Sep 14, 2019

Products (1)

  • Cisco Catalyst 6000 Series Switches

Known Affected Releases


Description (partial)

Mac addresses off orphaned ports learned on Quad Sup720 VSS are showing unknown unicast flooding in MAC table:

F340.06.06-6500-2#sh mac address-table dynamic | i uni
    10  0010.0000.000e   dynamic  Yes         60   flood to vlan10 (unicast)
    11  0010.94c0.000a   dynamic  Yes          0   flood to vlan11 (unicast)

Upon creation of new Vlan, orphaned ports in that Vlan will show unknown unicast flood. Traffic flows must hash over ICS VSL links.
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.