Users Guide

Limitations
• In VLT scenarios, the resolved ARP entry for the leaked route is not synchronized between the VLT peers. The ARP entry resolved in
the source VRF is programmed into the leaked VRF when the leaked route configuration is active.
• During downgrade from 10.4.2, the leaked route configuration is restored. However, the routes remain inactive in the destination VRF
instance.
• During downgrade from 10.4.2, the update-source-if command is not restored.
Configuring static route leaking
To configure static route leaking:
1. Enter the interface in the source VRF instance that contains the static routes that you want to leak.
interface interface-name
CONFIGURATION Mode
2. In INTERFACE CONFIGURATION Mode, assign the interface to the source VRF instance.
ip vrf forwarding vrf1
INTERFACE CONFIGURATION Mode
3. Assign an IP address to the interface.
ip address ip-address
VRF CONFIGURATION Mode
4. Enter the interface of the VRF instance to which you want to leak the static routes.
interface interface-name
CONFIGURATION Mode
5. In INTERFACE CONFIGURATION Mode, assign the interface to the destination VRF instance.
ip vrf forwarding vrf2
INTERFACE CONFIGURATION Mode
6. Configure the static route that you want to leak on the destination VRF instance.
ip route vrf dest-vrf-name route nexthop-interface
7. Configure the static route that you have configured earlier in the source VRF instance to be available in the destination VRF instance
also.
ip route vrf src-vrf-name route nexthop-interface
OS10(config)#interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# ip vrf forwarding VRF1
OS10(conf-if-eth1/1/1)# ip address 120.0.0.1/24
OS10(config)#interface ethernet 1/1/2
OS10(conf-if-eth1/1/1)# ip vrf forwarding VRF2
OS10(conf-if-eth1/1/1)# ip address 140.0.0.1/24
OS10(config)#ip route vrf VRF1 140.0.0.0/24 interface ethernet 1/1/2
OS10(config)#ip route vrf VRF2 120.0.0.0/24 interface ethernet 1/1/1
The following example shows the show output:
OS10(config)# do show ip route vrf VRF1
Codes: C - connected
S - static
B - BGP, IN - internal BGP, EX - external BGP
O - OSPF, IA - OSPF inter area, N1 - OSPF NSSA external type 1,
N2 - OSPF NSSA external type 2, E1 - OSPF external type 1,
E2 - OSPF external type 2, * - candidate default,
+ - summary route, > - non-active route
Gateway of last resort is not set
Destination Gateway Dist/Metric Last Change
----------------------------------------------------------------------------------------------
------
C 120.0.0.0/24 via 120.0.0.1 ethernet1/1/1 0/0 00:00:57
S 140.0.0.0/24 Direct,VRF2 ethernet1/1/2 1/0 00:00:04
OS10(config)# do show ip route vrf VRF2
Codes: C - connected
S - static
B - BGP, IN - internal BGP, EX - external BGP
Layer 3
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