Installation and Getting Started Guide

Table 5.4: Web Management Display of STP Information

 

 

This Field...

Displays...

 

 

STP Bridge Parameters (global parameters)

 

 

VLAN ID

The port-based VLAN that contains this spanning tree (instance of

 

STP). VLAN 1 is the default VLAN. If you have not configured port­

 

based VLANs on this device, all STP information is for VLAN 1.

 

 

Root ID

The ID assigned by STP to the root bridge for this spanning tree.

 

 

Root Cost

The cumulative cost from this bridge to the root bridge. If this device

 

is the root bridge, then the root cost is 0.

 

 

Root Port

The port on this device that connects to the root bridge. If this device

 

is the root bridge, then the value is “Root” instead of a port number.

 

 

Priority

This device or VLAN’s STP priority. The value is shown in

 

hexadecimal format.

 

Note: If you configure this value, specify it in decimal format. See

 

“Changing STP Bridge Parameters” on page 5-4.

 

 

Max Age

The number of seconds this device or VLAN waits for a hello message

 

from the root bridge before deciding the root has become unavailable

 

and performing a reconvergence.

 

 

Hello Time

The interval between each configuration BPDU sent by the root

 

bridge.

 

 

Hold Time

The minimum number of seconds that must elapse between

 

transmissions of consecutive Configuration BPDUs on a port.

 

 

Forward Delay

The number of seconds this device or VLAN waits following a

 

topology change and consequent reconvergence.

 

 

Topology Last Change

The number of seconds since the last time a topology change

 

occurred.

 

 

Topology Change Counter

The number of times the topology has changed since this device was

 

reloaded.

 

 

Bridge Address

The STP address of this device or VLAN.

 

Note: If this address is the same as the Root ID, then this device or

 

VLAN is the root bridge for its spanning tree.

 

 

STP Port Parameters

 

 

 

VLAN

The VLAN that the port is in.

 

 

Port

The port number.

 

 

Priority

The port’s STP priority, in hexadecimal format.

 

Note: If you configure this value, specify it in decimal format. See

 

“Changing STP Port Parameters” on page 5-5.

 

 

Path Cost

The port’s STP path cost.

 

 

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