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Cisco 10000 Series Router Software Configuration Guide
OL-2226-23
Chapter 3 Configuring Remote Access to MPLS VPN
Configuration Tasks for RA to MPLS VPN
Configuring a Dedicated PVC
To configure a dedicated PVC for each VPN, enter the following commands beginning in global
configuration mode:
Configuring BGP to Advertise Networks
To configure BGP to advertise the networks for each VPN, enter the following commands beginning in
global configuration mode:
Command Purpose
Step 1
Router(config)# interface atm
slot/port.subinterface-number
point-to-point
Creates a point-to-point ATM subinterface. Enters subinterface
configuration mode.
Step 2
Router(config-subif)# ip vrf forwarding
vrf-name
Associates a VRF with the ATM point-to-point subinterface.
Step 3
Router(config-subif)# ip address address
Assigns an IP address to the ATM subinterface.
Step 4
Router(config-subif)# pvc [vpi/vci
number]
Configures the PVC on the subinterface. Enters PVC
configuration mode.
Step 5
Router(config-subif-pvc)# encapsulation
aal5snap
Configures the ATM adaptation layer (AAL) and encapsulation
type on the ATM PVC.
Command Purpose
Step 1
Router(config)# router bgp autonomous-system
Configures the internal BGP (iBGP) routing process with the
autonomous system number passed along to other iBGP
routers.
Step 2
Router(config-router)# no bgp default
ipv4-unicast
Disables IPv4 BGP routing.
Step 3
Router(config-router)# neighbor {ip-address |
peer-group-name} remote-as as-number
Configures the neighboring PE router’s IP address or iBGP
peer group and identifies it to the local autonomous system.
The MP-BGP neighbors must use the loopback addresses.
Step 4
Router(config-router)# neighbor {ip-address |
peer-group-name} update-source interface-type
Allows iBGP sessions to use any operational interface for
TCP connections.
Step 5
Router(config-router)# neighbor {ip-address |
peer-group-name} activate
Activates route exchanges with the global BGP neighbors.
Step 6
Router(config-router)# address-family ipv4 vrf
vrf-name
Enters address family configuration mode and configures the
VRF routing table for BGP routing sessions that use standard
IPv4 address prefixes.
The vrf-name argument specifies the name of the virtual
routing and forwarding (VRF) instance to associate with
subsequent IPv4 address family configuration mode
commands.