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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
Defining PVCs
To define PVCs, enter the following commands beginning in global configuration mode:
Configuring Label Switching
To configure label switching on the interface connected to the MPLS cloud, enter the following
commands beginning in global configuration mode:
Configuring the VRF for Each VPN
To configure the VRF 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
Specifies an ATM point-to-point 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 unnumbered
Loopback number
Configures the ATM subinterface as unnumbered to a loopback
interface.
Note The loopback interface must be in the same VRF.
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.
Step 6
Router(config-subif-pvc)# no protocol ip
inarp
Disables Inverse ARP on the ATM PVC.
Command Purpose
Step 1
Router(config)# interface atm
slot/port.subinterface-number
tag-switching
Connects to an MPLS cloud using MPLS ATM tagging. Enters
subinterface configuration mode.
Step 2
Router(config-subif)# ip address address
Assigns an IP address to the ATM subinterface.
Step 3
Router(config-subif)# tag-switching atm
vp-tunnel vpi
Specifies an interface or subinterface as a virtual private (VP)
tunnel.
Step 4
Router(config-subif)# tag-switching ip
Enables label switching of IP packets on the interface.
Command Purpose
Step 1
Router(config)# ip vrf vrf-name
Enters VRF configuration mode and defines the virtual routing
instance by assigning a VRF name.
Step 2
Router(config-vrf)# rd
route-distinguisher
Creates routing and forwarding tables.
Step 3
Router(config-vrf)# route-target {import
| export | both}
route-target-ext-community
Creates a list of import and export route target communities for
the specified VRF.