Spanning-Tree Vlan Root; Spanning-Tree Vlan Priority - Dell Networking 2024 Reference Manual

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spanning-tree vlan root

Use the spanning-tree vlan root primary command to configure the switch to

become the root bridge or standby root bridge by modifying the bridge

priority from the default value to a lower value calculated to ensure the bridge

is the root (or standby) bridge. Use the no form of the command to let the

network elect the root bridge.

spanning-tree vlan

root {primary | secondary}

no spanning tree vlan

Default Configuration

The default bridge priority value is 32768.

Command Modes

Global Configuration mode

User Guidelines

This command can be configured even if the switch is configured for MST

(RSTP) mode. It is only used when the switch is configured for PVST or

RPVST modes.

The logic sets the bridge priority to a value lower (primary) or next lower

(secondary) than the lowest bridge priority for the specified VLAN or a range

of VLANs. This command only applies when STP-PV or RSTP-PV is enabled.

console(config)#spanning-tree vlan 3 root primary

Use the spanning-tree vlan priority command to configure the bridge priority

of a VLAN. The bridge priority is combined with the MAC address of the

switch and is used to select the root bridge for the VLAN. Use the no form of

the command to return the priority to the default value.

Spanning Tree Commands

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