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Cisco Bug: CSCup55384 - 2960x stops processing BPDU's until state change to Root

Last Modified

Oct 02, 2020

Products (1)

  • Cisco Catalyst 2960-X Series Switches

Known Affected Releases


Description (partial)

A 2960x may have a root port that regularly transitions between root and designated states. The state of the switch may also transition between root and designated bridge just as frequently. This may create connectivity problems for hosts located on the switch and a large number of TCNs within the L2 domain in question.

Seen on 2960x switches were there is a 10g interface used as the root port to the rest of the network.
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