lldptool(8)							       Linux							       lldptool(8)

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 vir-
       tual 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  lld-
       pad. 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

open-lldp							   February 2010						       lldptool(8)