![background image](http://html.mh-extra.com/html/foundry-networks/switch-and-router/switch-and-router_installation-and-configuration-manual_2324275367.webp)
Configuring Spanning Tree Protocol (STP) and IronSpan
December 2000
12 - 5
5.
Modify the bridge STP parameters to the values desired.
6.
Click Apply to save the changes to the device’s running-config file.
7.
Select the Save link at the bottom of the dialog. Select Yes when prompted to save the configuration change
to the startup-config file on the device’s flash memory.
Changing STP Port Parameters
To change STP port parameters, use either of the following methods.
USING THE CLI
To change the path and priority costs for a port, enter commands such as the following:
BigIron(config)# vlan 10
BigIron(config-vlan-10)# spanning-tree ethernet 1/5 path-cost 15 priority 64
Syntax:
spanning-tree ethernet | pos <portnum> path-cost <value> | priority <value>
The
ethernet | pos
<portnum> parameter specifies the interface.
The
path-cost
<value> parameter specifies the port’s cost as a path to the spanning tree’s root bridge. STP
prefers the path with the lowest cost. You can specify a value from 0 – 65535.
The default depends on the port type:
•
10 Mbps – 100
•
100 Mbps – 19
•
Gigabit – 4
•
OC-3c – 200
•
OC-12c – 80
•
OC-48c – 20
The
priority
<value> parameter specifies the preference that STP gives this port relative to other ports for
forwarding traffic out of the spanning tree. You can specify a value from 0 – 255. The default is 128. A higher
numerical value means a lower priority; thus, the highest priority is 0.
Summary of Contents for Switch and Router
Page 2: ...December 2000 Copyright 2000 by Foundry Networks Inc ...
Page 26: ...Foundry Switch and Router Installation and Configuration Guide xxvi December 2000 ...
Page 64: ...Foundry Switch and Router Installation and Configuration Guide 2 34 December 2000 ...
Page 162: ...Foundry Switch and Router Installation and Configuration Guide 5 38 December 2000 ...
Page 196: ...Foundry Switch and Router Installation and Configuration Guide 6 34 December 2000 ...
Page 208: ...Foundry Switch and Router Installation and Configuration Guide 7 12 December 2000 ...
Page 236: ...Foundry Switch and Router Installation and Configuration Guide 8 28 December 2000 ...
Page 258: ...Foundry Switch and Router Installation and Configuration Guide 9 22 December 2000 ...
Page 420: ...Foundry Switch and Router Installation and Configuration Guide 13 32 December 2000 ...
Page 442: ...Foundry Switch and Router Installation and Configuration Guide 14 22 December 2000 ...
Page 554: ...Foundry Switch and Router Installation and Configuration Guide 15 112 December 2000 ...
Page 574: ...Foundry Switch and Router Installation and Configuration Guide 16 20 December 2000 ...
Page 626: ...Foundry Switch and Router Installation and Configuration Guide 17 52 December 2000 ...
Page 682: ...Foundry Switch and Router Installation and Configuration Guide 18 56 December 2000 ...
Page 826: ...Foundry Switch and Router Installation and Configuration Guide 20 20 December 2000 ...
Page 994: ...Foundry Switch and Router Installation and Configuration Guide 26 10 December 2000 ...
Page 1004: ...Foundry Switch and Router Installation and Configuration Guide B 6 December 2000 ...
Page 1044: ...Foundry Switch and Router Installation and Configuration Guide C 40 December 2000 ...
Page 1048: ...Foundry Switch and Router Installation and Configuration Guide D 4 December 2000 ...
Page 1070: ...Foundry Switch and Router Installation and Configuration Guide Index 18 December 2000 ...