Web Management Guide-R04

Table Of Contents
Chapter 5
| VLAN Configuration
L2PT Tunneling
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Web Interface
To add an interface to a QinQ tunnel:
1. Click VLAN, Tunnel.
2. Select Configure Interface from the Step list.
3. Set the mode for any tunnel access port to Access and the tunnel uplink port to
Uplink.
4. Click Apply.
Figure 95: Adding an Interface to a QinQ Tunnel
L2PT Tunneling
When Layer 2 Protocol Tunneling (L2PT) is not used, protocol packets (e.g., STP) are
flooded to 802.1Q access ports on the same edge switch, but filtered from 802.1Q
tunnel ports. This creates disconnected protocol domains in the customer’s
network.
L2PT can be used to pass various types of protocol packets belonging to the same
customer transparently across a service providers network. In this way, normally
segregated network segments can be configured to function inside a common
protocol domain.
Command Usage
L2PT encapsulates protocol packets entering ingress ports on the service
provider’s edge switch, replacing the destination MAC address with a
proprietary MAC address (for example, the spanning tree protocol uses 10-12-
CF-00-00-02), a reserved address for other specified protocol types (as defined
in IEEE 802.1ad – Provider Bridges), or a user-defined address. All intermediate