This command is a good one that I use often. There are time I want to see if a route is in the PA and if it is, which interface is being used. If you’re in an environment with a of routes, especially static routes, this command is very helpful.
Example looking for and external IP:
PA5250-A(active)> test routing fib-lookup virtual-router VR_INET_CLUSTER ip 4.2.2.2 -------------------------------------------------------------------------------- runtime route lookup -------------------------------------------------------------------------------- virtual-router: VR_INET_CLUSTER destination: 4.2.2.2 result: via 107.x.x.11 interface ethernet1/1, source 107.x.x.1, metric 10 --------------------------------------------------------------------------------
Example looking for and internal IP:
PA5250-A(active)> test routing fib-lookup virtual-router VR_INET_CLUSTER ip 10.100.10.101 -------------------------------------------------------------------------------- runtime route lookup -------------------------------------------------------------------------------- virtual-router: VR_INET_CLUSTER destination: 10.100.10.101 result: via 192.168.10.4 interface ethernet1/10, source 192.168.10.3, metric 11 --------------------------------------------------------------------------------
You can also use the “show routing route” command but I like the command above better because in order to use this command, you need to know the subnet. With the above command, you just need an IP.
PA5250-A(active)> show routing route | match 10.100.10.0 10.100.10.0/24 192.168.10.4 11 A Oi 1250043 ethernet1/10