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14-112

Using the Web Browser Interface for Basic Configuration Tasks

Bridging

Configuring the Spanning Tree Protocol

Typically, RSTP will run on your WAN without any further configurations.

However, you can:

■ view information about the spanning tree

■ configure the router to run the legacy version, STP, rather than RSTP

■ change the router’s bridge priority

■ alter spanning tree timers

■ configure properties for individual interfaces

Viewing a Spanning Tree

RSTP and STP prune connections in a looped topology. All nodes participating

in the same bridge group generate a shared, loopless topology. You can view

information about this topology, called a spanning tree instance. Follow

these steps:

1. Select Spanning Tree under Router/Bridge in the navigation bar.

2. Scroll down to the Spanning Tree Properties window and select the

Spanning Tree Instance that you want to view.

3. A window, such as the one displayed in Figure 14-82, will display informa-

tion that you can view to determine:

• Which network device is the root.

• Which interfaces are forwarding packets.

• Which interfaces have been disabled—for example, in Figure 14-82

the Frame Relay 1.102 subinterface provides a redundant connection

to the root, so its role is “Blocking” and it does not forward packets.

• Which interface role each interface is playing—Root ports are on the

best path to the root device. Designated ports connect to root ports

on neighbors further from the root. Edge ports connect to end

devices. For example, in Figure 14-82, the Ethernet 0/2 interface

connects the local device to the root, and the Ethernet 0/1 interface

provides a connection to the root for a connected network.

The Spanning Tree Properties “STP <instance number>” window dis-

plays information about the root bridge in the Root ID column and the

local device in the Bridge ID column. For example, in Figure 14-82, the

root is identified by its MAC address 00:12:79:05:25:D4, and it is connected

to the local router through the Ethernet 0/2 interface.

HP ProCurve 7000dl Series User Manual

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