NAME

       ovs-tcpdump - Dump traffic from an Open vSwitch port using tcpdump.

SYNOPSIS

       ovs-tcpdump -i port tcpdump options...

DESCRIPTION

       ovs-tcpdump creates switch mirror ports in the ovs-vswitchd daemon and executes tcpdump to listen against
       those ports. When the tcpdump instance exits, it then cleans up the mirror port it created.

       ovs-tcpdump will not allow multiple mirrors for the same port. It has some logic  to  parse  the  current
       configuration and prevent duplicate mirrors.

       The -i option may not appear multiple times.

       It  is  important  to  note that under Linux based kernels, tap devices do not receive packets unless the
       specific tuntap device has been opened by an application. This requires CAP_NET_ADMIN privileges, so  the
       ovs-tcpdump command must be run as a user with such permissions (this is usually a super-user).

OPTIONS

       -h
       --help Prints a brief help message to the console.

       -V
       --version
              Prints version information to the console.

       --db-sock
              The     Open     vSwitch     database     socket     connection    string.    The    default    is
              unix:/var/run/openvswitch/db.sock

       --dump-cmd
              The command to run instead of tcpdump.

       -i
       --interface
              The interface for which a mirror port should be created, and packets should be dumped.

       --mirror-to
              The name of the interface which should be the destination of the mirrored packets. The default  is
              miINTERFACE

SEE ALSO

       ovs-appctl(8), ovs-vswitchd(8), ovs-pcap(1), ovs-tcpundump(1), tcpdump(8), wireshark(8).