---
name: "lltdscan"
section: "8"
platform: "linux"
package: "lltdscan"
version: "0+20180223-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/lltdscan"
---

# lltdscan(8)

scan for LLTD-enabled hosts on a network interface.

## NAME

lltdscan - scan for LLTD-enabled hosts on a network interface.

## SYNOPSIS

**lltdscan** \[-i *iface*\] \[-t *timeout*\] \[-u\] \[-v\] \[-v\] \[aa:bb:cc:dd:ee:ff\]

## DESCRIPTION

The *lltdscan* utility sends broadcast **LLTD** request on specified (or default) interface. And then listens for **timeout** milliseconds for responses.

Add one or two **-v** options to increase verbosity.

Add **-u** option to show machine names in UTF-8.

Also you can specify exactly one **MAC** address as last argument - and **lltdscan** will exit as soon as it receives first reply from specified host.

## LLTD PROTOCOL

**LLTD** stands for "Link Layer Topology Discovery".

Protocol specs are available from Microsoft at http://www.microsoft.com/whdc/connect/Rally/LLTD-spec.mspx

## SEE ALSO

**[ping(8)](/ping/8.md)**, **[arp(8)](/arp/8.md)**, **[arping(8)](/arping/8.md)**

## AVAILABILITY

Check for latest versions at http://github.com/zed-0xff/lltdscan

And feel free to visit my personal technical blog at http://zed.0xff.me/ for more fun & useful tools and patches :)

## AUTHOR

Andrey Zaikin \<zed.0xff@gmail.com\>.