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

bgpdBorder Gateway Protocol daemon

bgpd [-cdnv] [-D macro=value] [-f file]

bgpd is a Border Gateway Protocol (BGP) daemon which manages the network routing tables. Its main purpose is to exchange information concerning "network reachability" with other BGP systems. bgpd uses the Border Gateway Protocol, Version 4, as described in RFC 4271. Please refer to that document for more information about BGP.

bgpd is usually started at boot time, and can be enabled by setting the following in /etc/rc.conf.local:


See rc(8) and rc.conf(8) for more information on the boot process and enabling daemons.

When bgpd starts up, it reads settings from a configuration file, typically bgpd.conf(5). A running bgpd process can be controlled using the bgpctl(8) utility.

The options are as follows:

Force bgpd to do carp(4) demotion at startup when the functionality is used. Normally, bgpd will only do demotion at startup when the demotion counter for the group in question is already greater than 0. bgpd will start handling demotion after all sessions with demotion configured for the given group have been successfully established. At system startup, rc(8) has the demotion counter for the group increased until after bgpd is started, so this option should be used in rc.conf(8).
Define macro to be set to value on the command line. Overrides the definition of macro in the configuration file.
Do not daemonize. If this option is specified, bgpd will run in the foreground and log to .
Use file as the configuration file, instead of the default /etc/bgpd.conf.
Configtest mode. Only check the configuration file for validity.
Produce more verbose output.

default bgpd configuration file
default bgpd control socket

bgpd.conf(5), bgpctl(8), bgplg(8), bgplgsh(8)

A Border Gateway Protocol 4 (BGP-4), RFC 4271, January 2006.

BGP Communities Attribute, RFC 1997, August 1996.

Protection of BGP Sessions via the TCP MD5 Signature Option, RFC 2385, August 1998.

Use of BGP-4 Multiprotocol Extensions for IPv6 Inter-Domain Routing, RFC 2545, March 1999.

BGP Route Reflection - An Alternative to Full Mesh IBGP, RFC 2796, April 2000.

Route Refresh Capability for BGP-4, RFC 2918, September 2000.

The Generalized TTL Security Mechanism (GTSM), RFC 3682, February 2004.

NOPEER Community for Border Gateway Protocol, RFC 3765, April 2004.

BGP Extended Communities Attribute, RFC 4360, February 2006.

BGP/MPLS IP Virtual Private Networks (VPNs), RFC 4364, February 2006.

BGP Cease Notification Message Subcodes, RFC 4486, April 2006.

Multiprotocol Extensions for BGP-4, RFC 4760, January 2007.

BGP Support for Four-octet AS Number Space, RFC 4893, May 2007.

Capabilities Advertisement with BGP-4, RFC 5492, February 2009.

Error Handling for Optional Transitive BGP Attributes, draft-ietf-idr-optional-transitive-00, April 2009.

Subcodes for BGP Finite State Machine Error, draft-ietf-idr-fsm-subcode-02, August 2011.

MRT routing information export format, draft-ietf-grow-mrt-17, August 2011.

The bgpd program first appeared in OpenBSD 3.5.

September 17, 2011 OpenBSD-5.1