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LDPD(8) NetBSD System Manager's Manual LDPD(8)
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by Kimmo Suominen.
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ldpd -- Label Distribution Protocol Daemon
ldpd [-DdfhW] [-c config_file] [-p port]
ldpd is a utility used to automatically distribute labels between two
MPLS LSRs conforming to RFC5036. Currently some features described by
RFC5036 are not fully implemented (see BUGS section). ldpd supports
peering with IPv6 LDP speakers and IPv6 labels exchange, conforming to
specifications in RFC5036 and draft-ietf-mpls-ldp-ipv6.
ldpd logs information using the syslog(3) interface. You can increase
the log verbosity using the -W and -D flags.
Administrators can use telnet(1) to connect to the control port (default:
2626) and use this interface in order to get informations about protocol
status, neighbours et cetera but also to set runtime parameters. The
password required for connecting is the same as the root password.
ldpd computes existing routes and tries to match them on MPLS labels
announced by other LDP peers. This means that usual IP routes will be
changed into tagged routes, and MPLS routing table will be populated.
Any change in MPLS topology will also be announced to LDP neighbors.
ldpd uses currently Independent Control Mapping and Downstream Unso-
licited mode for Label Advertisment. ldpd will listen on a route socket
and compute the necessary changes in order to change untagged routes into
tagged routes. This means that one may use one's favourite dynamic rout-
ing protocol daemon without modifications.
The options are as follows:
-c config_file Specifies a path to the config file. Default:
/etc/ldpd.conf - see ldpd.conf(5) for configuration file
-D Enable debug mode.
-d Don't use route interception code. ldpd will not make
any changes to routing table if started with this
-f Run in foreground. Use STDOUT for warning and debug
-h Outputs supported flags.
-p port Changes the TCP control port (default: 2626).
-W Enable output of warning messages.
LDP Specification, RFC, 5036, October 2007.
LDP Applicability, RFC, 3037, January 2001.
Updates to LDP for IPv6, DRAFT, draft-ietf-mpls-ldp-ipv6-07, June 2012.
The ldpd command appeared in NetBSD 6.0.
ldpd doesn't implement Path Vector and Hop Count TLVs.
As a security measure you SHOULD filter the LDP well-known (646) TCP and
UDP ports using your favourite packet filter before starting ldpd. This
is the current way used to filter neighbours and to protect the system
from possible external attacks like route injections.
NetBSD 7.1.2 February 4, 2013 NetBSD 7.1.2