3com 8807 User Guide

C

HAPTER

 50: C

ARD

 I

NTERMIXING

 

FOR

 MPLS S

UPPORT

■

In card intermixing networking, non-MPLS cards can only be used for access at 
the private network side, and MPLS card must be used for access at the public 
network side.

■

MPLS card has influence on the forwarding performance of a switch.

The combination of multiple MPLS cards and multiple non-MPLS cards is similar to 
"Combination of one MPLS card and multiple non-MPLS cards" in Section 5.4.4; 
however, MPLS VPN services can be processed on the MPLS cards directly, without 
the need of card intermixing configuration.

It is not allowed to bind VLL and BGP/MPLS VPN to the same VLAN.

A VPLS card supports VPLS. However, a VPLS card does not have egress interfaces, 
so another interface card must be used data forwarding.

VPLS cards can work with any type of interface cards to support VPLS.

Assume only non-MPLS cards were used at the beginning, and then one MPLS 
card was added to support MPLS VPN services (VLL and BGP/MPLS VPN) through 
card intermixing configuration. Then one VPLS card was added to process VPLS 
services.

The MPLS card is used to process MPLS VPN services. It is recommended to use 
non-MPLS cards for the access of MPLS services at the private network side.