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Cisco Bug: CSCul64510 - pvstag-io process restarting repeatedly on STP mode change MST to PVRST

Last Modified

May 11, 2018

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases


Description (partial)


If invalid configuration is committed when attempting to change STP mode from MSTP to PVRST, the standby pvstag-io process may restart repeatedly.


Although the exact conditions are not yet known, this has been seen when removing MSTP configuration and adding PVRST configuration in a single commit. This issue is only seen when both the MSTP configuration and PVRST configuration involved Bundle-Ethernet interfaces.
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