HP 2500 manual HP2512config# spanning tree, General STP Operating Parameters

Configuring Advanced

Features

Syntax:

[no] spanning-tree

Default:

Disabled

This command enables STP with the current parameter settings or disables

STP withoug losing the most-recently configured parameter settings. (To learn

how the switch handles parameter changes, how to test changes without

losing the previous settings, and how to replace previous settings with new

settings, see appendix C, “Switch Memory and Configuration”.) When

enabling STP, you can also include the STP general and per-port parameters

described in the next two sections. When you use the “no” form of the

command, you can do so only to disable STP. (STP parameter settings are not

changed when you disable STP, and cannot be included with the no spanning-

tree command.

C a u t i o n

Because incorrect STP settings can adversely affect network performance,

HP recommends that you use the default STP parameter settings. You should

not change these settings unless you have a strong understanding of how STP

operates. For more on STP, see the IEEE 802.1D standard.

HP2512(config)# spanning tree

Enables STP on the switch.

Name

Default

Range

Function

priority

32768

0 - 65535

Specifies the priority value used along with the

switch MAC address to determine which device is

root. The lower a priority value, the higher the

priority.

maximum-age

20 seconds

6 - 40

Maximum received message age the switch allows

seconds

for STP information before discarding the message,

hello-time

2 seconds

1 - 10

Time between messages transmitted when the

switch is the root.

forward-delay

15 seconds

4 - 30

Time the switch waits before transitioning from the

seconds

listening to the learning state, and between the

learning state to the forwarding state.