Inspecting network traffic with tcpdump

Some of the useful tcpdump commands to trouble shoot network issues:

List the interfaces

tcpdump -D

Get the traffic to specific host

tcpdump -i eth0 -vvv -A -l host host-to-check

To dump into a file

tcpdump -i eth0 -vvv -A -l host host-to-check -w file-to-dump

Read from a file

tcpdump -i eth0 -vvv -A -l -r file-to-read-from