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  • There are many options, but here is the way I do it:

     

    tcpdump -ni my_inside_vlan -s0 -w /var/tmp/somefilename.pcap host 10.199.12.51

     

    Where the -ni sets the interface, I use the vlan name.

     

  • tcpdump -s0 -ni 0.0 host x.x.x.x
    will capture packets on all interfaces that match the host filter.