Reference Guide

1034 | Virtual Routing and Forwarding (VRF)
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Configure VRRP on a VRF Interface
Starting in release 8.4.1.0, you can configure the VRRP feature on interfaces that belong to a VRF
instance. In previous releases, VRRP was not supported on interfaces that were configured for a
non-default VRF.
In a virtualized network that consists of multiple VRFs, various overlay networks can exist on a shared
physical infrastructure. Nodes (hosts and servers) that are part of the VRFs can be configured with IP static
routes for reaching specific destinations through a given gateway in a VRF. VRRP provides high
availability and protection for next-hop static routes by eliminating a single point of failure in the default
static routed network. For more information, refer to the Virtual Router Redundancy Protocol (VRRP)
chapter.
Sample VRF Configuration
The following configuration illustrates a typical VRF set up.
Figure 59-2. Set up OSPF and static routes
3/0
3/0
7/0
7/1
7/2
9/18
9/19
9/20
R1
R2
router ospf 1 vrf blue
router-id 1.0.0.1
network 1.0.0.0/24 area 0
network 10.0.0.0/24 area 0
router ospf 2 vrf orange
router-id 2.0.0.1
network 2.0.0.0/24 area 0
network 20.0.0.0/24 area 0
ip route vrf green 31.0.0.0/24 3.0.0.2
router ospf 1 vrf blue
router-id 1.0.0.2
network 11.0.0.0/24 area 0
network 1.0.0.0/24 area 0
passive-interface GigabitEthernet 9/18
router ospf 2 vrf orange
router-id 2.0.0.2
network 21.0.0.0/24 area 0
network 2.0.0.0/24 area 0
passive-interface GigabitEthernet 9/19
ip route vrf green 31.0.0.0/24 3.0.0.1
cam-profile ipv4-vrf microcode ipv4-vrf
ip vrf default-vrf 0
ip vrf blue 1
ip vrf orange 2
ip vrf green 3