Spanning-tree pathcost method, Spanning-tree pathcost, Method – Microsens MS453490M Management Guide User Manual

Page 762

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C

HAPTER

33

| Spanning Tree Commands

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restarts the system in the new mode, temporarily disrupting user

traffic.

E

XAMPLE

The following example configures the switch to use Rapid Spanning Tree:

Console(config)#spanning-tree mode rstp

Console(config)#

spanning-tree

pathcost method

This command configures the path cost method used for Rapid Spanning

Tree and Multiple Spanning Tree. Use the no form to restore the default.

S

YNTAX

spanning-tree pathcost method {long | short}
no spanning-tree pathcost method

long - Specifies 32-bit based values that range from

1-200,000,000. This method is based on the IEEE 802.1w Rapid

Spanning Tree Protocol.
short - Specifies 16-bit based values that range from 1-65535.

This method is based on the IEEE 802.1 Spanning Tree Protocol.

D

EFAULT

S

ETTING

Long method

C

OMMAND

M

ODE

Global Configuration

C

OMMAND

U

SAGE

The path cost method is used to determine the best path between

devices. Therefore, lower values should be assigned to ports attached

to faster media, and higher values assigned to ports with slower media.

Note that path cost (

page 769

) takes precedence over port priority

(

page 775

).

The path cost methods apply to all spanning tree modes (STP, RSTP

and MSTP). Specifically, the long method can be applied to STP since

this mode is supported by a backward compatible mode of RSTP.

E

XAMPLE

Console(config)#spanning-tree pathcost method long

Console(config)#

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