ladvd - send link layer advertisements
ladvd [ -a ] [ INTERFACE ] [
INTERFACE ] ...
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.
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.
- -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).
Sten Spans <sten@blinkenlights.nl>