Configuring S-Vlan Tunnels For Layer 2 Services Over Mpls; Advantages; Figure 19: S-Vlan Tunnels For Ethernet Layer 2 Services Over Mpls - Juniper JUNOSE SOFTWARE 11.2.X - LINK LAYER CONFIGURATION GUIDE 7-7-2010 Configuration Manual

JunosE 11.2.x Link Layer Configuration Guide

Configuring S-VLAN Tunnels for Layer 2 Services over MPLS

Advantages

Figure 19: S-VLAN Tunnels for Ethernet Layer 2 Services over MPLS

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There is no no version.
See svlan id.
When you configure Ethernet layer 2 services over MPLS, you can create a special type
of S-VLAN called an S-VLAN tunnel that uses a single interface to tunnel traffic from
multiple VLANs across an MPLS network. The S-VLAN tunnel enables multiple VLANs,
each configured with a unique VLAN ID tag, to share a common S-VLAN ID tag when
they traverse an MPLS network.
Using S-VLAN tunnels provides an easier and faster way to configure Ethernet layer 2
services over MPLS than using standard S-VLANs. For example, consider the network
configuration shown in Figure 19 on page 182.
In this example, traffic from three VLAN subinterfaces must traverse the MPLS network.
To accomplish this using standard S-VLANs, you issue the following commands to
configure three separate S-VLANs with the same S-VLAN ID value and different VLAN
IDs, as follows:
host1(config-if)#svlan id 33 10
host1(config-if)#svlan id 33 20
host1(config-if)#svlan id 33 30
By contrast, using an S-VLAN tunnel achieves the same result, but requires you to issue
only a single svlan id command with the keyword any in place of the VLAN ID value. For
example, the following command creates a single interface that tunnels traffic from
VLANs configured with an S-VLAN ID of 33 and any VLAN ID to the same destination
across the MPLS network. In effect, this command tunnels traffic from all three VLANs
shown in Figure 19 on page 182.
host1(config-if)#svlan id 33 any
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