configure stpd priority

configure stpd stpd_name priority priority

Description

Specifies the bridge priority of the STPD.

Syntax Description

stpd_name Specifies an STPD name on the switch.
priority Specifies the bridge priority of the STPD. The range is 0 through 61,440 and is subject to the multiple of 4,096 restriction.

Default

The default priority is 32,768.

Usage Guidelines

If your STPD has the same name as another component, for example a VLAN, we recommend that you specify the identifying keyword as well as the name. If your STPD has a name unique only to that STPD, the keyword stpd is optional.

You should not configure any STP parameters unless you have considerable knowledge and experience with STP. The default STP parameters are adequate for most networks.

By changing the bridge priority of the STPD, you can make it more or less likely to become the root bridge.

The range for the priority parameter is 0 through 61,440 and is subject to the multiple of 4,096 restriction. A setting of 0 indicates the highest priority.

If you have an ExtremeXOS 11.5 or earlier configuration that contains an STP or RSTP bridge priority that is not a multiple of 4,096, the switch rejects the entry and the bridge priority returns to the default value. The MSTP implementation already uses multiples of 4,096 to determine the bridge priority.

For example, to lower the numerical value of the priority (which gives the priority a higher precedence), you subtract 4,096 from the default priority: 32,768 - 4,096 = 28,672. If you modify the priority by a value other than 4,096, the switch rejects the entry.

ExtremeXOS 11.5 and Earlier

If you have switches running ExtremeXOS 11.5 and earlier, the priority range is different than switches running ExtremeXOS 11.6 and later.

The range for the priority parameter is 0 through 65,535. A setting of 0 indicates the highest priority.

Example

The following command sets the bridge priority of STPD1 to 16,384:

configure stpd stpd1 priority 16384

History

This command was first available in ExtremeXOS 10.1.

The priority range and behavior was updated based on support for the 802.1D-2004 standard in ExtremeXOS 11.6.

Platform Availability

This command is available on all platforms.