03-14-2012
Quote:
Originally Posted by
codemaniac
When you are calling tcpdump from your script , just exclude the parenthesis .
Thanks, but it doesn't work like expected.
I get some output lines from 'tcpdump' e.g.: "reading from file /tmp/..., link-type EN10MB (Ethernet)"
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LEARN ABOUT CENTOS
ovs-tcpundump
ovs-tcpundump(1) Open vSwitch Manual ovs-tcpundump(1)
NAME
ovs-tcpundump - convert ``tcpdump -xx'' output to hex strings
SYNOPSIS
ovs-tcpundump < file
Common options:
[-h | --help] [-V | --version]
DESCRIPTION
The ovs-tcpundump program reads tcpdump -xx output on stdin, looking for hexadecimal packet data, and dumps each Ethernet as a single hexa-
decimal string on stdout. This format is suitable for use with the ofproto/trace command supported by ovs-vswitchd(8) via ovs-appctl(8).
At least two -x or -X options must be given, otherwise the output will omit the Ethernet header, which prevents the output from being using
with ofproto/trace.
OPTIONS
-h, --help
Prints a brief help message to the console.
-V, --version
Prints version information to the console.
SEE ALSO
ovs-appctl(8), ovs-vswitchd(8), ovs-pcap(1), tcpdump(8), wireshark(8).
Open vSwitch December 2010 ovs-tcpundump(1)