Spanning Tree Protocol (STP) Bridge Priority Incrementing/Decrementing by One

This feature allows you to configure all STP modes (RSTP/MSTP) bridge priority in increments of 1 or 4,096. Allowing this level of granularity of the priority allows a large range of priority values for the backup root functionality. Once priority reaches 0, the backup root is unable to provide for rapid recovery in a lost root situation. In that case, priority returns to its initial configured (or default) value, and the process starts again. Loss of root should be a rare event, but this feature setting provides a buffer in situations where network downtime to reset the root is not often available.

Supported Platforms

Summit X450-G2, X460-G2, X670-G2, X770, and ExtremeSwitching X620, X440-G2 series switches.

New CLI Commands

configure stpd stpd_name priority-mode [dot1d | dot1t]

Changed CLI Commands

The following commands are changed to accommodate changes from the STP Bridge Priority Incrementing/Decrementing by One Feature:

show stpd

configure stpd stpd_name priority priority