Foundry Networks Switch and Router User Manual

Configuring Spanning Tree Protocol (STP) and IronSpan
December 2000 12 - 7
Displaying STP Information
You can display the following STP information:
• All the global and interface STP settings
• CPU utilization statistics
• Detailed STP information for each interface
• STP state information for an individual interface
• STP state information for a port-based VLAN
Displaying STP Information for an Entire Device
To display STP information for an entire device, use either of the following methods.
USING THE CLI
To display STP information, enter the following command at any level of the CLI:
BigIron(config)# show span
Global STP Parameters:
VLAN Root Root Root Prio Max He- Ho- Fwd Last Chg Bridge
ID ID Cost Port rity Age llo ld dly Chang cnt Address
Hex sec sec sec sec sec
1 800000e052a9bb40 0 Root 8000 20 2 2 15 0 6 00e052a9bb40
Port STP Parameters:
VLAN Port Prio Path State Fwd Design Design Design
ID Num rity Cost Trans Cost Root Bridge
Hex
1 3/1 80 19 ENABLED 2 0 800000e052a9bb40 800000e052a9bb40
1 3/2 80 0 DISABLED 0 0 0000000000000000 0000000000000000
1 3/3 80 0 DISABLED 0 0 0000000000000000 0000000000000000
1 3/4 80 0 DISABLED 0 0 0000000000000000 0000000000000000
1 3/5 80 0 DISABLED 0 0 0000000000000000 0000000000000000
1 3/6 80 0 DISABLED 0 0 0000000000000000 0000000000000000
1 3/7 80 0 DISABLED 0 0 0000000000000000 0000000000000000
1 3/8 80 0 DISABLED 0 0 0000000000000000 0000000000000000
1 3/9 80 0 DISABLED 0 0 0000000000000000 0000000000000000
1 3/10 80 0 DISABLED 0 0 0000000000000000 0000000000000000
Syntax: show span [vlan <vlan-id>] | [pvst-mode] | [<num>]
The vlan <vlan-id> parameter displays STP information for the specified port-based VLAN.
The pvst-mode parameter displays STP information for the device’s Per VLAN Spanning Tree (PVST+)
compatibility configuration. See “PVST/PVST+ Compatibility” on page 12-23.
The <num> parameter displays only the entries after the number you specify. For example, on a device with three
port-based VLANs, if you enter 1, then information for the second and third VLANs is displayed, but information for
the first VLAN is not displayed. Information is displayed according to VLAN number, in ascending order. The
entry number is not the same as the VLAN number. For example, if you have port-based VLANs 1, 10, and 2024,
then the command output has three STP entries. To display information for VLANs 10 and 2024 only, enter show
span 1.

Foundry Networks Switch and Router Specifications

General

Brand	Foundry Networks
Model	Switch and Router
Category	Switch
Language	English