Some nice useful networking related commands

Send an arp command:

   arping 10.30.0.132

View arp cache:

   arp -n 

Display routing table using any of the following commands:

  ip route show
  route -n
  netstat -rn 

Show a route for a destination IP address:

  ip route get 10.0.2.14

Show traffic on a nic for a particular protocol:

  tcpdump -i eth0 -v arp    (arping)

  tcpdump -i eth0 -v icmp   (ping)

  tcpdump -i eth0 -v 

Capture packets with IP address:

   tcpdump -n -i eth0