SignaMax SC30010, Справочное руководство CLI

Страница: 433 / 671

Chapter 17
| Spanning Tree Commands
– 433 –
spanning-tree
port-priority
This command configures the priority for the specified interface. Use the no
form to restore the default.
Syntax
spanning-tree port-priority priority
no spanning-tree port-priority
priority - The priority for a port. (Range: 0-240, in steps of 16)
Default Setting
128
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
◆ This command defines the priority for the use of a port in the Spanning
Tree Algorithm. If the path cost for all ports on a switch are the same, the
port with the highest priority (that is, lowest value) will be configured as an
active link in the spanning tree.
◆
Where more than one port is assigned the highest priority, the port with
lowest numeric identifier will be enabled.
◆ The criteria used for determining the port role is based on root bridge ID,
root path cost, designated bridge, designated port, port priority, and port
number, in that order and as applicable to the role under question.
Example
Console(config)#interface ethernet 1/5
Console(config-if)#spanning-tree port-priority 0
Related Commands
spanning-tree cost (425)
spanning-tree
root-guard
This command prevents a designated port from taking superior BPDUs into
account and allowing a new STP root port to be elected. Use the
no form to
disable this feature.
Syntax
[ no ] spanning-tree root-guard
Default Setting
Disabled