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LADVD(8)		    System Manager's Manual		      LADVD(8)

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. Addi-
       tional  protocols  can  be enabled using	the -C,	-E, -F and -N options.
       Optionally a list of interfaces which ladvd should utilize can be  sup-
       plied.  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. Addi-
       tionally	ladvd will recognize bundled interfaces	(bridges, bonding) and
       use these to transmit additional	information. The result	is  that  nor-
       mally  it  should  not  be necessary to specify interfaces on the ladvd
       command-line. The only reason for specifying interfaces is  to  explic-
       itly 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 fur-
	      ther 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	inter-
	      face 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  descrip-
	      tions  (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)

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