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Feb 21 2001:

Finally the VSA packing/unpacking works with 3Com equipment. Ian Smith
contributed  code to  unpack  VSAs  coming from  the  3Com. Quan  Choi
reported   useful   information   regarding   the  encoding   of   the
VSAs.  According  to  Quan,  3Com  packs the  VSAs  according  to  the
following structure:

   0                   1                   2                   3
   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |     Type      |  Length       |            Vendor-Id
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
        Vendor-Id (cont)           |      Sub-Attribute Type       
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
          Sub-Attribute Type       |        Payload...             |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Which is fine,  as RFC-2138 does not mandate  any particular structure
for the Vendor-Specific payload.

Thanks to both Ian and Quan for the help.

luismunoz@cpan.org

$Id: README.3COM 7 2003-01-08 03:42:41Z lem $