tcpdump mailing list archives

Re: Request for new DLT


From: Michael Richardson <mcr () sandelman ca>
Date: Sat, 18 May 2013 15:54:38 -0400


"Pascal" == Pascal Quantin <pascal.quantin () gmail com> writes:
    Pascal> Anders Broman, Wireshark core developer, is currently designing an export
    Pascal> functionality for PDUs and would need a DLT allocated for this new
    Pascal> functionality.
    Pascal> You will find below the email he tried to send to this mailing list a few
    Pascal> days ago and that got bounced. I hope mine will go through
    Pascal> :)

sorry.

    Anders>  I would need a DLT for a wrapper around higher level PDU's or per-packet
    Anders> DLT:s the format is multipurpose and consists of a number of TLV:s
    Anders> proceeding the actual PDU.
    Anders> There are TLV:s which describes which protocol the PDU is and meta data
    Anders> such as IP address and port (if the transport protocol(s) are striped off).

    Anders> The format can be used by logging functions in various nodes, say after
    Anders> deserialization(SS7 over TDM) decryption(GSM/UMTS/LTE Nodes?) etc.
    Anders> Tag values and an outline of the format can be found here
    Anders> http://anonsvn.wireshark.org/viewvc/trunk/epan/exported_pdu.h?revision=49285&view=markup

Looks like a rather sane TLV structure.
Is it intended to be used beyond SS7 stuff?

-- 
]               Never tell me the odds!                 | ipv6 mesh networks [ 
]   Michael Richardson, Sandelman Software Works        | network architect  [ 
]     mcr () sandelman ca  http://www.sandelman.ca/        |   ruby on rails    [ 
        
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