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          ovs-tcpdump(8)                Open vSwitch Manual               ovs-tcpdump(8)
          
          
          
          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  in‐
                 stance 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
          
                 --span If specified, mirror all ports (optional).
          
          SEE ALSO
                 ovs-appctl(8),  ovs-vswitchd(8),  ovs-pcap(1),  ovs-tcpundump(1),  tcp
                 dump(8), wireshark(8).
          
          
          
          Open vSwitch                        2.10.90                     ovs-tcpdump(8)
          
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