Static Route Commands

Static routing is a very fundamental feature of routing technology. It defines static prefix and gateway.

ip route network gateway

Command

network is destination prefix with format of A.B.C.D/M. gateway is gateway for the prefix. When gateway is A.B.C.D format. It is taken as a IPv4 address gateway. Otherwise it is treated as an interface name. ip route 10.0.0.0/8 10.0.0.2 ip route 10.0.0.0/8 ppp0 First example defines 10.0.0.0/8 static route with gateway 10.0.0.2. Second one defines the same prefix but with gateway to interface ppp0.

ip route network netmask gateway

Command

This is alternate version of above command. When network is A.B.C.D format, user must define netmask value with A.B.C.D format. gateway is same option as above command ip route 10.0.0.0 255.255.255.0 10.0.0.2 ip route 10.0.0.0 255.255.255.0 ppp0 This is a same setting using this statement.

ip route network gateway distance

Command

Multiple nexthop static route

     ip route 10.0.0.1/32 10.0.0.2
     ip route 10.0.0.1/32 10.0.0.3
     ip route 10.0.0.1/32 eth0
     

If there is no route to 10.0.0.2 and 10.0.0.3, and interface eth0 is reachable, then the last route is installed into the kernel.

     zebra> show ip route
     S>  10.0.0.1/32 [1/0] via 10.0.0.2 inactive
                           via 10.0.0.3 inactive
       *                   is directly connected, eth0
     

Floating static route

ipv6 route network gateway

Command

ipv6 route network gateway distance

Command

table tableno

Command

Select the primary kernel routing table to be used. This only works for kernels supporting multiple routing tables (like GNU/Linux 2.2.x and later). After setting tableno with this command, static routes defined after this are added to the specified table.