JUNOSe 9.1.x BGP and MPLS Configuration Guide > Configuring Layer 2 Services over MPLS > Configuring Local Cross-Connects Between Ethernet/VLAN Interfaces

Configuring Local Cross-Connects Between Ethernet/VLAN Interfaces

This section provides an example for configuring a local cross-connect that uses MPLS between two Ethernet/VLAN interfaces.

NOTE: You must use the mpls-relay command instead of the route interface command to configure a local cross-connect, regardless of the MPLS tunneling method used in the core network.

Figure 117 shows the interface stack that the router builds for this configuration.

Figure 117: Local Cross-Connect Between Ethernet/VLAN Interfaces

To configure the application shown in Figure 117:

1. Configure a local IP address.

You can use any reachable local IP address. This example uses a loopback interface to provide the local IP address.

host1(config)#interface loopback 0

host1(config-if)#ip address 10.1.1.1 255.255.255.255

host1(config-if)#exit

2. Configure the Ethernet/VLAN interface on one side of the local cross-connect.

host1(config)#interface fastEthernet 9/1

host1(config-if)#encapsulation vlan

host1(config-if)#exit

host1(config)#interface fastEthernet 9/1.1

host1(config-if)#vlan id 10

3. (Optional) If you are configuring a multiservice local cross-connect, assign an IP address and mask to the Ethernet/VLAN interface.

host1(config-if)#ip address 10.1.2.3 255.255.255.0

4. Configure MPLS tunneling on this side of the connection by issuing the mpls-relay command.

When you issue the mpls-relay command, you must use a reachable local IP address and the same VC ID value (4) on both sides of the connection.

host1(config-if)#mpls-relay 10.1.1.1 4

host1(config-if)#exit

5. Configure the Ethernet/VLAN interface on the other side of the local cross-connect.

host1(config)#interface fastEthernet 3/1

host1(config-if)#encapsulation vlan

host1(config-if)#exit

host1(config)#interface fastEthernet 3/1.1

host1(config-if)#vlan id 11

6. (Optional) If you are configuring a multiservice local cross-connect, assign an IP address and mask to the Ethernet/VLAN interface.

host1(config-if)#ip address 10.1.2.4 255.255.255.0

7. Configure MPLS tunneling on this side of the connection by issuing the mpls-relay command.

You must use a reachable local IP address and the same VC ID value (4) specified in Step 4.

host1(config-if)#mpls-relay 10.1.1.1 4

host1(config-if)#exit

Related Topics

• encapsulation vlan command
• interface fastEthernet command
• interface loopback command
• ip address command
• mpls-relay command
• vlan id command