Alcatel-Lucent 6850-48 Guida Di Rete

Configuring VPLS Services

Configuring VPLS

page 11-22

OmniSwitch AOS Release 6 Network Configuration Guide

• Bridging functionality is not supported on access ports or link aggregates.

• The default encapsulation type for an access port is null, which means the SAP supports only one 

customer service (dotq supports multiple services).

• The MTU for a SAP should not exceed the MTU of the PE network.

Each SAP is comprised of an access port or link aggregate and an encapsulation type value. Access ports 
are customer-facing ports that reside on a provider edge router. Traffic received on these ports is classi-
fied for one or more SAPs and forwarded onto its destination by the associated VPLS service.

By default, when MPLS is enabled for the switch, all ports are considered network ports. To configure a 
port or link aggregate as an access port, use the 

 command. For exam-

ple, the following command configures port 1/2 as an access port:

-> configure service port 1/2 mode access

The access port encapsulation type determines if the port will support single or multiple Service Access 
Points (SAPs) for customer services. There are two types of encapsulations supported: null (single) and 
dot1q (multiple SAPs using 802.1q tags to direct packets to a specific service).

By default, the encapsulation type is set to null when the port is configured as an access port. To change 
the encapsulation type for the port, use the 

 command. For example, 

the following command changes the encapsulation type for port 1/3 to dot1q:

-> configure service port 1/3 encap-type dot1q

A Layer 2 profile determines how control frames ingressing on an access port are processed. When a port 
is configured as an access port, a default Layer 2 profile (def-access-profile) is applied to the port with the 
following default values for processing control frames: 

If the default profile values are not sufficient, use the 

 command to create a 

new profile. For example, the following command creates a profile named “no-stp-gvrp”:

-> configure service l2profile no-stp-gvrp create