Bgp/Mpls Vpn Configuration; Configuring Ce Router - 3Com 8800 Configuration Manual

3Com Switch 8800 Configuration Guide
compromised method brings additional configuration burden and has limitation in
actual use.
To resolve this problem, the idea of multi-role host is generated. Specifically to say, this
idea is to differentiate the accesses to different VPNs through configuring policy routing
based on IP addresses, and transmit downstream data flow from PE to CE by
configuring static routing. The static routing under multi-role host circumstance is
different from common hosts; it is implemented by specifying an interface of another
VPN as the egress interface through a static route in a VPN; and thus allowing one
logical interface to access multiple VPNs.

37.2 BGP/MPLS VPN Configuration

Implementing BGP/MPLS VPN functions requires the following procedures in general:
Configure basic information on PE, CE and P; establish the logical or physical link with
IP capabilities from PE to PE; advertise and update VPN network information.
I. CE router
The configuration on CE is relative simple. Only static route, RIP, OSPF or EBGP
configuration is needed for VPN routing information exchange with the PE connected,
MPLS configuration is not needed.
II. PE router
The configuration on PE is relative complex. After the configuration, the PE implements
MPLS/BGP VPN core functions.
The following sections describe the configuration tasks on a PE device:
Configuring basic MPLS capability
Defining BGP/MPLS VPN site
Configuring PE-CE route exchanging
Configuring PE-PE route exchanging
III. P router
The configuration on P device is relative simple. The main task is to configure MPLS
basic capacity on the P device to support LDP and MPLS forwarding.
The following are detailed configurations.

37.2.1 Configuring CE Router

As a customer-side device, only basic configuration is required on a CE router, for
routing information exchange with PE router. Currently route switching modes available
include static route, RIP, OSPF, EBGP, and so on.
Chapter 37 BGP/MPLS VPN Configuration
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