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Implementing MPLS VPNs over IP Tunnels on Cisco IOS XR Software
How to Configure MPLS VPNs over IP Tunnels
MPC-283
Cisco IOS XR MPLS Configuration Guide
OL-12284-01
Configuring a CFI VRF Interface
Perform this task to associate a VPN routing and forwarding (VRF) instance with an interface or a
subinterface on the PE routers.
SUMMARY STEPS
1. configure
2. interface type interface-id
3. vrf vrf-name
4. ipv4 address ipv4-address
5. ipv6 address ipv6-address
6. dot1q vlan vlan-id
7. end
or
commit
DETAILED STEPS
Command or Action Purpose
Step 1
configure
Example:
RP/0/RP0/CPU0:router# configure
Enters global configuration mode.
Step 2
interface type interface-id
Example:
RP/0/RP0/CPU0:router(config)# interface
GigabitEthernet0/0/0/1.1
Enters interface configuration mode and enables a
GigabitEthernet interface.
Step 3
vrf vrf-name
Example:
RP/0/RP0/CPU0:router(config-if)# vrf v1
Specifies a VRF name.
Step 4
ipv4 address ipv4-address
Example:
RP/0/RP0/CPU0:router(config-if)# ipv4 address
100.1.10.2 255.255.255.0
Enters an IPv4 address and mask for the associated IP
subnet. The network mask can be specified in either of two
ways:
• The network mask can be a four-part dotted decimal
address. For example, 255.0.0.0 indicates that each bit
equal to 1 means that the corresponding address bit
belongs to the network address.
• The network mask can be indicated as a slash (/) and
number. For example, /8 indicates that the first 8 bits of
the mask are ones, and the corresponding bits of the
address are network address.