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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>,<typeidver‐
       sion>,<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 con‐
       tain 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=asso‐
		     ciate, 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  com‐
       mand 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)

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