Cisco Bug: CSCvu10392 - N9K - STP configurations can be different in port-channel and member link.
Jul 16, 2020
- Cisco Nexus 9000 Series Switches
Known Affected Releases
Symptom: + Configuration of port-channel and individual member interfaces allows the user to have separate, mismatched STP modes. + This is contradicting the documentation and makes troubleshooting confusing. Document link: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/93x/interfaces/configuration/guide/b-cisco-nexus-9000-nx-os-interfaces-configuration-guide-93x/b-cisco-nexus-9000-nx-os-interfaces-configuration-guide-93x_chapter_010000.html Issue directly contradicts this section: ------- Any configuration changes that you apply to the port channel are applied to each member interface of that port channel. For example, if you configure Spanning Tree Protocol (STP) parameters on the port channel, the Cisco NX-OS software applies those parameters to each interface in the port channel. ------- Conditions: Any Nexus 9k with layer 2 port-channels. Port-channel interface allows the user to have different STP modes versus the member links. + This does not affect STP states as a port-channel interface takes precedence as long as the member links are bundled.
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