Chapter 2: Bridging Configuration Guide

Define the Maximum Age

If a bridge does not hear BPDUs from the root bridge within a specified interval, it assumes that the network has changed and recomputes the spanning-tree topology.

To change the default interval setting, enter the following command in Configure mode:

Change the amount of time a bridge will wait to hear BPDUs from the root bridge.

stp set bridging max-age <num>

Configuring a Port or Protocol based VLAN

To create a port or protocol based VLAN, perform the following steps in the Configure mode.

1.Create a port or protocol based VLAN.

2.Add physical ports to a VLAN.

Create a Port or Protocol Based VLAN

To create a VLAN, perform the following command in the Configure mode.

Create a VLAN.

vlan create <vlan-name> <type> id <num>

Adding Ports to a VLAN

To add ports to a VLAN, perform the following command in the Configure mode.

Add ports to a VLAN.

vlan add ports <port-list> to <vlan-name>

Configuring VLAN Trunk Ports

The SSR supports standards-based VLAN trunking between multiple SSRs as defined by IEEE 802.1Q. 802.1Q adds a header to a standard Ethernet frame which includes a unique VLAN id per trunk between two SSRs. These VLAN ids extend the VLAN broadcast domain to more than one SSR.

To configure a VLAN trunk, perform the following command in the Configure mode.

Configure 802.1Q VLAN trunks.

vlan make <port-type> <port-list>

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SmartSwitch Router User Reference Manual

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Cabletron Systems 9032578-02 manual Configuring a Port or Protocol based Vlan, Configuring Vlan Trunk Ports

9032578-02 specifications

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