1ovs-tcpdump(8)                Open vSwitch Manual               ovs-tcpdump(8)
2
3
4

NAME

6       ovs-tcpdump - Dump traffic from an Open vSwitch port using tcpdump.
7

SYNOPSIS

9       ovs-tcpdump -i port tcpdump options...
10

DESCRIPTION

12       ovs-tcpdump  creates switch mirror ports in the ovs-vswitchd daemon and
13       executes tcpdump to  listen  against  those  ports.  When  the  tcpdump
14       instance exits, it then cleans up the mirror port it created.
15
16       ovs-tcpdump  will  not allow multiple mirrors for the same port. It has
17       some logic to parse the current  configuration  and  prevent  duplicate
18       mirrors.
19
20       The -i option may not appear multiple times.
21
22       It  is important to note that under Linux based kernels, tap devices do
23       not receive packets unless the specific tuntap device has  been  opened
24       by  an application. This requires CAP_NET_ADMIN privileges, so the ovs-
25       tcpdump command must be run as a user with such  permissions  (this  is
26       usually a super-user).
27

OPTIONS

29       -h
30       --help Prints a brief help message to the console.
31
32       -V
33       --version
34              Prints version information to the console.
35
36       --db-sock
37              The  Open vSwitch database socket connection string. The default
38              is unix:/var/run/openvswitch/db.sock
39
40       --dump-cmd
41              The command to run instead of tcpdump.
42
43       -i
44       --interface
45              The interface for which a mirror port  should  be  created,  and
46              packets should be dumped.
47
48       --mirror-to
49              The name of the interface which should be the destination of the
50              mirrored packets. The default is miINTERFACE
51

SEE ALSO

53       ovs-appctl(8),  ovs-vswitchd(8),  ovs-pcap(1),  ovs-tcpundump(1),  tcp‐
54       dump(8), wireshark(8).
55
56
57
58Open vSwitch                        2.10.1                      ovs-tcpdump(8)