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weismat
Asked: 2011-03-09 21:22:08 +0800 CST

tcpdump unknown device

  • 772

I am trying to run tcpdum on Solaris 10 as root user.
I always get unknown device - even though I am using the name provided by

ifconfig -a

How can I find out the right device name?

tcpdump solaris-10

2 Answers

  1. Best Answer

    Use snoop in Solaris, instead of tcpdump. The interfaces that are plumbed can be listed with ifconfig -a. The unplumbed interfaces should be listed by dmesg.

    • 1

  2. I have a solaris box here, but no root access or tcpdump to test. However on my Linux box, i get the interface name from ifconfig which returns something like.

    $ ifconfig -a

eth2    Link encap:Ethernet  HWaddr blah
        blah 
        blah

lo      Link enca:Local loopback
        blah 
        blah

    Then feeding this into tcpdump gives:-

    $ tcpdump -i eth2
verbose output suppressed
listening on eth2, link-type EN10MB (Ethernet), capture size 96 bytes

    What's your actual output from ifconfig -a?

    • 0