HP-UX Reference (11i v2 04/09) - 1M System Administration Commands N-Z (vol 4)

s
slpd(1M) slpd(1M)
NAME
slpd - Service Location Protocol Daemon
SYNOPSIS
slpd [ -c configuration_file ][
-r registration_file ][
-l log_file ][-p pid_file ][
-d ]
DESCRIPTION
The slpd daemon provides the functionality of the Directory Agent and Service Agent for the Service
Location Protocol ("SLP") version 2. SLP provides a scalable framework that allows the networking appli-
cations to discover the existence, location and configuration of networked services in the enterprise net-
works.
slpd provides the functionality of the following services:
Directory Agent (DA)
This agent collects service advertisements from the service agents or applications providing the services
and caches them in its memory. The DA then provides this services information to the clients (user
agents) trying to discover the service information. Directory agents advertise their presence through
directory agent advertisements.
Service Agent Server (SA)
This server registers the service information of all the services that are advertised by the corresponding
service agents to this server. It then answers the queries from the user agents about the information on
the services that were registered with this server by the services agents. It also forwards the registra-
tions to any Directory Agents that may be present in its scope.
slpd also provides a "-r" option whereby the existing services which are not slp enabled can advertise
information by storing this information in a static registration file. See below for the options. slpd
reads this file and provides the information to the user agents.
slpd can be either started as an SA server or DA by setting net.slp.isDA to either false or true in
the configuration file. In both the cases, slpd runs as a daemon listening for SLP requests. When
slpd
is acting as a DA, it registers the services coming from within the host acting as a SA server and acts as
DA for the User Agents (UAs) running on the remote machines.
slpd can be configured to provision services within a scope that is configured by the administrator by
setting net.slp.useScopes
in the configuration file. SLP daemon will answer to requests only if it
falls within this scope. This feature of scoping of SLP daemon provides provisioning of services in an
Enterprise network based on administration needs, geographical needs or department needs and also
provides scalability.
See RFC2608 for more information on the Service Location Protocol. Without any arguments,
slpd
reads the default configuration file, /etc/slp.conf
.
Options
The options are:
-c configuration_file Specifies the configuration file to slpd. The default configuration file is
/etc/slp.conf.
-d Do not detach from the terminal.
-l log_file Specifies the log file that receives slpd log messages. The default log file is
/var/adm/syslog/slpd.log.
-p pid_file Specifies the file that holds the slpd process id. The default slpd process id
file is /var/run/slpd.pid.
-r registration_file Specifies the registration file to slpd for reading service information. The
default registration file is /etc/slp.reg.
To restart the slpd daemon, send it a
SIGHUP signal.
To kill the slpd daemon, send it a
SIGTERM signal.
The
slpdc command can also be used for sending signals to the server process (see slpdc (1M)).
HP-UX 11i Version 2: September 2004 − 1 − Hewlett-Packard Company Section 1M−−783