Cisco Cisco IOS Software Release 12.0(22)S
MPLS Virtual Private Networks (VPNs)
Configuration Tasks
9
Cisco IOS Release 12.0(22)S
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MPLS in provider backbone routers, or GRE tunnel connectivity among all provider edge (PE)
routers
routers
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MPLS with VPN code in provider routers with VPN edge service (PE) routers
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BGP in all routers providing a VPN service
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CEF switching in every MPLS-enabled router
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CoS feature (optional)
Configuration Tasks
Perform the following tasks to configure and verify VPNs:
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Defining VPNs
To define VPN routing instances, perform the following steps on the PE router:
Command Purpose
Step 1
Router(config)# ip vrf
vrf-name
Enter VRF configuration mode and define the VPN routing
instance by assigning a VRF name.
instance by assigning a VRF name.
Step 2
Router(config-vrf)# rd
route-distinguisher
Create routing and forwarding tables.
Step 3
Router(config-vrf)#
route-target
{import | export
| both}
route-target-ext-community
Create a list of import and/or export route target communities for
the specified VRF.
the specified VRF.
Step 4
Router(config-vrf)# import
map
route-map
(Optional) Associate the specified route map with the VRF.
Step 5
Router(config-if)# ip vrf
forwarding
vrf-name
Associate a VRF with an interface or subinterface.