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LDPD.CONF(5) File Formats Manual LDPD.CONF(5)

ldpd.confLabel Distribution Protocol daemon configuration file

The ldpd(8) daemon implements the Label Distribution Protocol as described in RFC 5036.

The ldpd.conf config file is divided into four main sections.

User-defined variables may be defined and used later, simplifying the configuration file.
Global settings for ldpd(8).
Interface-specific parameters.
Targeted neighbor specific parameters.

Much like cpp(1) or m4(1), macros can be defined that will later be expanded in context. Macro names must start with a letter, digit, or underscore, and may contain any of those characters. Macro names may not be reserved words (for example, cost). Macros are not expanded inside quotes.

For example:

hi="2"
interface em0 {
	cost $hi
}

All interface related settings can be configured globally and per interface. The only settings that can be set globally and not overruled are listed below.

(yes|no)
If set to no, do not update the Label Forwarding Information Base, a.k.a. the kernel routing table. The default is yes.

address
Set the router ID; in combination with labelspace it forms the LSR-ID.

seconds
Set the keepalive timeout in seconds. The default value is 180; valid range is 1-65535.

(independent|ordered)
Select the distribution mode. independent distributes labels at any time; ordered forces ldpd(8) to wait a mapping from nexthop before distributing it to peers.

(liberal|conservative)
Select the retention mode. conservative retains just the labels advertised from nexthop; liberal mode retains every label received, even those not advertised from nexthops.

Select the advertisement mode. unsolicited advertises labels according to the distribution mode; ondemand advertises labels solely upon explicit request from peers.

(yes|no)
If set to yes, allow LDP sessions to be established with remote neighbors that have not been specifically configured. The default is no.

Each interface can have several parameters configured individually, otherwise they are inherited.

interface em0 {
}

Interface-specific parameters are listed below.

Set the hello holdtime in seconds. The maximum time ldpd(8) will wait between two consecutive hello messages from a peer before it is marked as being down. The default value is 15.
Set the hello interval in seconds. The default value is 5; valid range is 1-65535.

Each targeted neighbor can have several parameters configured individually, otherwise they are inherited.

targeted-neighbor A.B.C.D {
}

Targeted-neighbor specific parameters are listed below.

seconds
Set the hello holdtime in seconds. The maximum time ldpd(8) will wait between two consecutive hello messages from a peer before it is marked as being down. The default value is 45.
seconds
Set the hello interval in seconds. The default value is 5; valid range is 1-65535.

/etc/ldpd.conf
ldpd(8) configuration file

ldpctl(8), ldpd(8), rc.conf.local(8)

The ldpd.conf file format first appeared in OpenBSD 4.6.

June 4, 2013 OpenBSD-5.4