Configuring Advanced Features

Spanning Tree Protocol (STP)

You can also include one or more of the STP per-port parameters in this command. See “Reconfiguring Per-Port STP Operation on the Switch” on page 9-107.

Syntax: spanning-tree priority <0 - 65355>

maximum-age <6 - 40 seconds> hello-time <1 - 10 seconds> forward-delay <4 - 30 seconds>

Default: See table 9-10,above.

For example, to enable STP with a maximum-age of 30 seconds and a hello- time of 3 seconds:

HP2512(config)# spanning tree maximum-age 30 hello-time 3

Reconfiguring Per-Port STP Operation on the Switch. This command

enables STP (if not already enabled) and configures the following per-port parameters:

Table 9-11.Per-Port STP Parameters

Name

Default

 

Range

Function

path-cost

Ethernet:

100

1 - 65535

Assigns an individual port cost that the switch uses

 

10/100Tx:

10

 

to determine which ports are the forwarding ports.

 

100 Fx:

10

 

 

 

Gigabit:

5

 

 

 

 

 

 

 

priority

128

 

0 - 255

Used by STP to determine the port(s) to use for

 

 

 

 

forwarding. The port with the lowest number has

 

 

 

 

the highest priority.

 

 

 

 

 

mode

norm

 

norm

Specifies whether a port progresses through the

 

 

 

- or -

listening, learning, and forwarding (or blocking)

 

 

 

fast

states (“norm” mode) or transitions directly to the

 

 

 

 

forwarding state (“fast” mode).

 

 

 

 

(For information on when to use Fast mode, see

 

 

 

 

“STP Fast Mode” on page 9-109.)

 

 

 

 

 

You can also include STP general parameters in this command. See “Reconfiguring General STP Operation on the Switch” on page 9-106.

Syntax: spanning-tree ethernet <port-list> path-cost <1 - 65535> priority <0 - 255>

mode <norm fast>

Default: See table 9-11,above.

Features

Advanced Configuring

 

 

9-107