The recursive lookup feature allows a
device to search for another route if the original next-hop is not reachable.
About this task
If the next-hop for a basic static route
is directly reachable, it is added to the routing table. If that next-hop is not
reachable, the device can perform a lookup for another route (a recursive route). You
can enable the recursive lookup feature in the default VRF or in a non-default VRF.
Note
In SLX-OS, an original next-hop is not considered resolved if it is reachable
through a default route, such as 0.0.0.0/0.
Procedure
-
Access global configuration
mode.
device# configure terminal
-
To enable recursive lookup in
the default VRF, run the following command.
device(config)# ip route next-hop-recursion
-
To enable recursive lookup in a
non-default VRF, run the following commands.
device(config)# vrf red
device(config-vrf-red)# address-family ipv4 unicast
device(config-vrf-red-ipv4-unicast)ip route next-hop-recursion
This example enables recursive lookup in a VRF named red.
