Routing Between Vrf's; Configuration - Leaking Routes Between Vrf Instances - Avaya 8800 Technical Configuration Manual

4. Routing between VRF's

4.1 Configuration – Leaking Routes between VRF Instances
There may be times where you may wish to inject routes between VRF‟s for various reasons. For
example, you may have a case where there is service on a particulate VRF, i.e. VRF10, which you also
would also like to use on other VRF‟s. Instead of duplicating the service on each VRF, you could inject
the service routes from VRF 10 to the other VRF‟s that require the use of this service. In the other
direction, you will also need to inject the routes from the other VRF‟s that require the service back to
VRF10.
In this example, using the base configuration from the configuration example in section 3, we will enable
the leaking of routes between VRF1 and VRF2. Overall, we will accomplish the following:

Enable re-distribution of direct interfaces between VRF1 and VRF2

Only re-distribute network 172.1.25.0/24 from VRF2 to VRF1

Only re-distribute network 192.33.34.0/24 from VRF1 to VRF2
4.1.1 ERS 8600/8800 Configuration
4.1.1.1 Enable ASBR
In order to re-distribute static routes, you must enable OSPF ASBR on vrf 1.
ERS8000-1 Step 1 – Enable OSPF ASBR for vrf 1
ERS8000-1:5(config)# router vrf vrfone
ERS8000-1:5(router-vrf)# ip ospf as-boundary-router enable
ERS8000-1:5(router-vrf)# exit
ERS8000-2 Step 1 – Enable OSPF ASBR for vrf 1
ERS8000-2:5# config ip vrf vrfone ospf as-boundary-router enable
4.1.1.2 Add static routes
ERS8000-1 Step 1 – Create Static route for vrf 1
ERS8000-1:5(config)# router vrf vrfone
ERS8000-1:5(router-vrf)# ip route 172.1.25.0 255.255.255.0 172.1.1.5 weight 1 next-
hop-vrf vrftwo
ERS8000-1:5(router-vrf)# exit
ERS8000-2 Step 1 – Create Static route for vrf 1
ERS8000-2:5# config ip vrf vrfone static-route create 172.1.25.0/24 next-hop 172.1.1.5
cost 1 next-hop-vrf vrftwo
VRF-Lite for Ethernet Routing Switch 8600 Technical Configuration Guide
April 2011
avaya.com
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