NAME

       ladvd - send link layer advertisements

SYNOPSIS

       ladvd [ -a ] [ INTERFACE ] [ INTERFACE ] ...

DESCRIPTION

       ladvd  sends  LLDP  (Link  Layer  Discovery  Protocol)  advertisements  on  all  available
       interfaces. This makes connected hosts visible on managed switches. By default it will run
       as  a privilege-separated daemon. Additional protocols can be enabled using the -C, -E, -F
       and -N options. Optionally a  list  of  interfaces  which  ladvd  should  utilize  can  be
       supplied.

INTERFACES

       ladvd  detects  and  uses  all  configured  (UP)  physical Ethernet interfaces by default,
       wireless interfaces can be enabled via the -w option. Additionally  ladvd  will  recognize
       bundled  interfaces  (bridges,  bonding) and use these to transmit additional information.
       The result is that normally it should not be necessary to specify interfaces on the  ladvd
       command-line.  The  only  reason  for  specifying  interfaces  is  to explicitly exclude a
       particular interface.

OPTIONS

       -a     Auto-enable protocols based on received packets (also enables receive mode).

       -d     Dump pcap-compatible packets to stdout which  can  be  piped  to  tcpdump  (via  "|
              tcpdump -r -") or redirected to a file for further analysis.

       -f     Run in the foreground and send logging to stderr.

       -h     Print usage instructions.

       -m address
              Management address for unnumbered interfaces, can be specified for IPv4 and IPv6.

       -n     Use management addresses specified via -m for all interfaces.

       -o     Run only once, useful for quick troubleshooting.

       -r     Receive packets, and use them for various features.

       -q     Use  each  interface's  hwaddr  the  generate  the  chassis-id TLV. Not recommended
              because the chassis-id should be the same for all interfaces.

       -t     Use Tun/Tap interfaces.

       -u user
              Switch to this user (defaults to ladvd)

       -v     Increase logging verbosity.

       -w     Use wireless interfaces.

       -z     Save received peer information in  interface  descriptions  (requires  SIOCSIFDESCR
              support). This also enables receive mode.

       -c <CC>
              Specify a two-letter ISO 3166 country code (required for LLDP location support).

       -l <location>
              Specify the physical location of the host.

       -C     Enable CDP (Cisco Discovery Protocol).

       -E     Enable EDP (Extreme Discovery Protocol).

       -F     Enable FDP (Foundry Discovery Protocol).

       -N     Enable NDP (Nortel Discovery Protocol) formerly called SynOptics Network Management
              Protocol (SONMP).

AUTHOR

       Sten Spans <sten@blinkenlights.nl>