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• Configuring Virtual Switches as Separate Routing Instances on page 40

Configuring Virtual Switches as Separate Routing Instances

You can configure two virtual switches as separate routing instances on an MX Series

router with bridge domains and VLANs.

Before you begin, you should have already configured a basic bridge domain environment.

For a general description of a basic bridge domain environment, see “Layer 2 Features

for a Bridging Environment” on page 21. For an example of a basic bridge domain

configuration, see “Example Roadmap: Configuring a Basic Bridge Domain Environment”

on page 22. More detailed examples are also provided for the four features generally

required in a Layer 2 environment:

•

Interfaces and VLAN tags required.

•

Bridge domains required by the topology.

•

Spanning tree protocols required by the topology.

•

Integrated bridging and routing required by the topology.

At the end of this configuration, you create two virtual switches as separate routing

instances to separate the VLANs and broadcast domains. Because the same VLAN ID

can be used in multiple switched networks, virtual switches can keep each VLAN and

broadcast domain logically separated.

To configure two virtual switches as separate routing instances:

The following statements configure the first virtual switch in a routing instance.

[edit]

routing-instances {

virtual-switch-1 {

instance-type virtual-switch;

...virtual-switch-1 configuration with one STP/VLAN ID set...

}

The following statement configure the second virtual switch in a different routing

instance.

[edit]

routing-instances {

virtual-switch-2 {

instance-type virtual-switch;

...virtual-switch-2 configuration with another STP/VLAN ID set...

}

This is not a complete configuration.

Junos OS 13.1 MX Series 3D Universal Edge Routers Solutions Guide

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Juniper-networks JUNOS OS 10.4 Manual do Utilizador Página 60