NAME

       vdp - Show / manipulate VDP TLV configuration

SYNOPSIS

       lldptool -t -i ethx -V vdp -c enableTx

       lldptool -T -i ethx -V vdp -c enableTx=[yes|no]

       lldptool -t -i ethx -V vdp -c mode

       lldptool            -T           -i           ethx           -V           vdp           -c
       mode=<mode>,<mgrid>,<typeid>,<typeidversion>,<instanceid>,<mac>,<vlan>

       lldptool -t -i ethx -V vdp -c role

       lldptool -T -i ethx -V vdp -c role=[station|bridge]

DESCRIPTION

       The VSI discovery protocol (VDP) is NOT a TLV in the LLDP sense but rather a  protocol  to
       manage  the association and deassociation of virtual station interfaces (VSIs) between the
       station and an adjacent switch. VDP uses ECP as transport for VDP TLVs. An ECP  frame  may
       contain multiple VDP TLVs. Each VDP TLVs contains a mode, typeid, version, instanceid, mac
       and vlan for a VSI.

ARGUMENTS

       enableTx
              Enables or disables VDP

       mode   shows or sets modes for VSIs with the following parameters:

              <mode> mode (0=preassociate, 1=preassociate with RR, 2=associate, 3=deassociate)

              <mgrid>
                     manager (database) id

              <typeid>
                     VSI type id

              <version>
                     VSI type id version

              <instanceid>
                     VSI instance id

              <format>
                     VDP filter info format

              <mac>  VSI mac address

              <vlan> VSI vlan id

       role   shows or sets the role of the local machine to act as either station  (default)  or
              bridge.

Theory of Operation

       The  VDP  protocol is used to pre-associate, associate or deassociate VSIs to and adjacent
       switch. Information about the VSIs is formatted into VDP TLVs which are then handed to ECP
       for lower-level transport. Each ECP frame may contain multiple VDP TLVs.

       Two ways to receive VSI information exist in llpdad: via netlink or with lldptool. netlink
       is  used  by  libvirt  to  communicate  VSIs  to  lldpad.  lldptool   can   be   used   to
       associate/deassociate  VSIs  from the command line. This is especially helpful for testing
       purposes.

EXAMPLE & USAGE

       Display if vdp is enabled on eth8
              lldptool -t -i eth8 -V vdp -c enableTx

       Enable vdp on eth8
              lldptool -T -i eth8 -V vdp -c enableTx=yes

       Display the currently configured VSIs for eth8
              lldptool -t -i eth8 -V vdp -c mode

       Associate a VSI on eth8
              lldptool  -T  -i  eth8  -V  vdp   -c   mode=2,12,1193046,1,fa9b7fff-b0a0-4893-8e0e-
              beef4ff18f8f,2,52:54:00:C7:3E:CE,3

       Display the locally configured role for VDP on eth8
              lldptool -t -i eth8 -V vdp -c role

       Set the local role for VDP on eth8
              lldptool -T -i eth8 -V vdp -c role=bridge

SOURCE

       o      IEEE 802.1Qbg (http://www.ieee802.org/1/pages/802.1bg.html)

NOTES

       Currently  the  code in lldpad reflects draft 0 of the upcoming standard.  ECP/VDP TLVs on
       the wire can be decoded with wireshark > v1.8.

SEE ALSO

       lldptool-evb(8), lldptool(8), lldpad(8)

AUTHOR

       Jens Osterkamp