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Link Layer Topology Discovery (LLTD) Responder

November 23rd, 2006 by Patrick S

If you were testing Vista on the same network with a Windows XP machiene you may have wondered why the XP computer did not show up in your “Network Map” in the Network Control Centre.

Well the simple reason is that Windows XP couldn’t/wouldn’t respond to the LLTD Call made by Windows Vista over your network. (LLTD enables device discovery via the data-link layer and determines the topology of a network ((802.3 Ethernet & 802.11)).
So in reply to this Microsoft have released the Link Layer Topology Discovery (LLTD) responder for Windows XP computers. This in turn will allow you to see a graphical view of your network layout.

To download the LLTD Responder Click HERE or visit the KB Article

I am unsure weather the LLTD Protocol is built into Windows Server as I have not tested it. However if it is not there is not Patch for it as of yet.

-Patrick S

LLTD Demo

Demo of the LLDT Network Map Screen

Posted in Networking, Windows Vista, Windows XP | Comments Off on Link Layer Topology Discovery (LLTD) Responder


This entry was posted on Thursday, November 23rd, 2006 at 1:24 am and is filed under Networking, Windows Vista, Windows XP. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.


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