Interface Stacking; Configuration Example - Juniper JUNOSE SOFTWARE 11.2.X - LINK LAYER CONFIGURATION GUIDE 7-7-2010 Configuration Manual

Interface Stacking

Configuration Example

Copyright © 2010, Juniper Networks, Inc.
When you configure Ethernet layer 2 services over MPLS using S-VLAN tunnels, the only
interface that you can stack over an S-VLAN tunnel is an MPLS tunnel, which you configure
using the MPLS tunneling command (mpls-relay or route interface) that is appropriate
for your configuration. Attempting to configure any other interface type—such as IP, MPLS
(nontunnel), or PPPoE—over the S-VLAN tunnel causes the router to generate an error
and reject the configuration as invalid.
For details about configuring MPLS and layer 2 services over MPLS, see:
Chapter Configuring MPLS in JunosE BGP and MPLS Configuration Guide
Chapter Configuring Layer 2 Services over MPLS in JunosE BGP and MPLS Configuration
Guide
This section uses the sample network topology shown in Figure 19 on page 182 to illustrate
the steps for configuring S-VLAN tunnels for Ethernet layer 2 services over MPLS.
To configure S-VLAN tunnels for Ethernet layer 2 services over MPLS:
Specify a Fast Ethernet, Gigabit Ethernet, or 10-Gigabit Ethernet port.
1.
host1(config)#interface fastEthernet 4/0
Specify VLAN as the encapsulation method to create the VLAN major interface.
2.
host1(config-if)#encapsulation vlan
Create a VLAN subinterface.
3.
host1(config-if)#interface fastEthernet 8/1.1
Create the S-VLAN tunnel. This interface tunnels traffic from VLANs configured with
4.
an S-VLAN ID of 33 and any VLAN ID to the same destination across the MPLS
network.
host1(config-if)#svlan id 33 any
Assign an S-VLAN Ethertype.
5.
host1(config-if)#svlan ethertype 8100
Create the MPLS tunnel interface using the appropriate MPLS tunneling command
6.
for your configuration. For example:
host1(config-if)#route interface tunnel mpls:tunnel3 45
For complete instructions on configuring the MPLS tunnel, see chapter Configuring
Layer 2 Services over MPLS in JunosE BGP and MPLS Configuration Guide.
Repeat Steps 1 through 6 using unique values to configure the S-VLAN tunnel and
7.
MPLS tunnel interfaces on the remote E Series router. For example:
host2(config)#interface fastEthernet 3/1
host2(config-if)#encapsulation vlan
host2(config-if)#interface fastEthernet 3/1.1
Chapter 5: Configuring VLAN and S-VLAN Subinterfaces
183