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. Please note that only physical or bond/bridge interfaces  can
       be specified, vlan interfaces can only be auto-detected.

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.

       -e interface
              Exclude a particular interface, no packets will be transmitted on this interface.

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

       -h     Print usage instructions.

       -m interface
              The  management  interface  for this host. Addresses on this interface are auto-detected (IPv4 and
              IPv6).

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

       -o     Run only once, useful for quick troubleshooting.

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

       -s     Be silent, don't transmit any packets.

       -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.

       -y     Save  received peer hostname and port description in interface descriptions (requires SIOCSIFDESCR
              support) or Linux ifAliases. This also enables receive mode.

       -z     Save received peer hostname  and  port  name  in  interface  descriptions  (requires  SIOCSIFDESCR
              support) or Linux ifAliases. 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.

       -L     Enable LLDP (Link Layer Discovery Protocol).

       -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>

ladvd                                             July 19, 2009                                         LADVD(8)