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Cisco Bug: CSCut09976 - 6880 : VIF not created on FEX

Last Modified

Dec 13, 2018

Products (1)

  • Cisco Catalyst 6000 Series Switches

Known Affected Releases


Description (partial)

Users connected to particular fex are unable to communicate with rest of the network. Per "show int" output interface is in "connected" up/up state but packets sent to that interfaces are isolated.

Other easy to spot symptom is that MAC address learning is not happening.

Shut/no shut of affected interface is not helping.

To verify the problem below commands can be used:

On VSS itself check if VIF were assigned to each FEX module:

    test pla soft sw vir vntag_mgr fex-info <FEX-ID>

On FEX itself check if VIF is indeed assigned to ports on affected switch.

   test pla soft sw vir vntag_mgr fex-info 111

Multiple switches in FEX connected to VSS.
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