How to Display Routing Table

To display the kernel routing table, you can use any of the following methods:

• route
  

  $ sudo route -n
  Kernel IP routing table
  Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
  192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
  0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 eth0

  
  You need to be root to execute route.
  
  The -n option means that you want numerical IP addresses displayed, instead of the corresponding host names.
  
• netstat
  

  $ netstat -rn
  Kernel IP routing table
  Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
  192.168.0.0     0.0.0.0         255.255.255.0   U         0 0          0 eth0
  0.0.0.0         192.168.0.1     0.0.0.0         UG        0 0          0 eth0

  
  The -r option specifies that you want the routing table. The -n option is similar to that of the route command.
  
• ip
  

  $ ip route list
  192.168.0.0/24 dev eth0  proto kernel  scope link  src 192.168.0.103
  default via 192.168.0.1 dev eth0