Architecture:

Network Node Manager
To transfer the Event from DMI to SNMP we need a DMI-to-SNMP Mapping agent.
Alarm browser in Management station and Web:
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Services and File description:
LRF Description
netmon.lrf The LRF for netmon, the background service that polls agents to
initially discover your network.
Default option: -P which means that it is started through
ovstart.
You may want to use the following options. Be aware, however,
that using these options can affect performance.
-b burstcount
Add if you have an unreliable network. This
allows you to do multiple pings on a node.
-s seedfile Add when you want the initial map to include
specific networks in your administrative
domain.
-J Add if you have few SNMP agents on your
network to accelerate initial discovery.
ovactiond.lrf The LRF for ovactiond, the background service that executes
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configured commands when an event is received.
Default option: none.
ovcapsd.lrf The LRF for ovcapsd, the background service that discovers
Remote DMI nodes, Web-manageable nodes, and Web servers.
Default option: none.
ovrepld.lrf The LRF for ovrepld, the background service that replicates
objects.
ovtopmd.lrf The LRF for ovtopmd, the background service that controls the
topology database.
Default option: -O which means that it is started through
ovstart.
Use the -f filter option to specify a topology filter and make
use of NNM’s scalability and distribution feature.
ovtrapd.lrf The LRF for ovtrapd, the background service that executes
configured commands when an event is received.
Default option: none.
ovuispmd.lrf The LRF for ovuispmd, the background service that manages
user interface services and distributes relevant ovspmd requests
to OVW.
Default option: none
Use the -t option to change the time period that ovuispmd will
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wait for commands to complete.
ovwdb.lrf The LRF for ovwdb, the background service that controls the
object database.
Default option: -O which means that is started by ovstart.
You may want to use the -n number of objects option to
reduce the amount of memory used by ovwdb when managing
large numbers of nodes.
pmd.lrf The LRF for pmd, the background service that multiplexes and
logs events.
Default option: none.
snmpCollect.lrf The LRF for snmpCollect, the background service that collects
MIB data.
Default option: none.
Services and Files
There are two types of services:
• Background services that run continuously independent of whether
ovw is running.
• Foreground services that run while ovw is running.
The interaction among these services are shown in the figures in this
appendix. A brief description of each service and file follows. For more
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information on these services and files, see the reference page in NNM’s
online help (or UNIX manpage) having the same name as the service you
wish to learn about.
Background Services
The following services and files are involved with the startup of NNM.
ovstart Starts the various services that make up the HP
OpenView Network Node Manager product.
ovspmd Launches and manages all background services.
ovspmd interacts with the user commands ovstart,
ovstop, ovstatus, ovpause, and ovresume, and
performs the appropriate actions on the background
services.
ovsuf Contains the configuration information for ovspmd.
Each entry in ovsuf is created by ovaddobj from
information in the LRF (Local Registration File).
The following services run in the background during regular operation.
All of the following files reside in install_dir\bin\ ($OV_BIN).
httpd Handles http requests. This is a web server that is
provided on the UNIX operating system only.
netmon Polls SNMP agents to discover your network, and then
detects topology, configuration, and status changes in
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the network.
ovactiond Receives events from pmd and executes commands.
ovalarmsrv Provides event information to Java-based Alarm
Browsers.
ovcapsd Listens for new nodes and checks them for remote DMI
capabilities, web-manageability, and web server
capabilities.
ovas Maintains topology and node status information for
NNM Dynamic views.
ovrepld Responsible for object replication. ovrepld is started
only when monitoring remote collection stations in a
DIDM environment.
ovrequestd Executes the reports and data warehouse exports
according to a predefined schedule. Once a report is
configured, ovrequestd starts executing the exports
and the reports.
ovsessionmgr.exe Manages users’ web sessions. ovsessionmgr.exe is
started by ovstart.
ovtopmd Maintains the network topology database. The topology
database is a set of files that stores netmon polling
status and information about network objects,
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including their relationships and status. ovtopmd reads
the topology database at start-up.
ovtrapd Receives SNMP traps and forwards them to pmd.
ovtrapd also responds to SNMPv2 requests.
ovuispmd Manages the NNM user interface services and
distributes relevant ovspmd requests to each instance
of ovw that is running. ovuispmd must be running for
ovw to be started, and should be running whenever
ovspmd is running.
ovwdb Controls the object database. The object database
stores semantic information about objects.
pmd Receives and forwards events, and logs events to the
event database. pmd also forwards events from the
network to other applications that have connected to
pmd using the SNMP API.
snmpCollect Collects MIB data and performs threshold monitoring.
snmpCollect stores the data it collects in the
install_dir\databases\snmpcollect
($OV_DB/snmpcollect) directory and sends threshold
events to pmd.
Foreground Services
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This section describes the NNM foreground services that may be running
after you execute ovw. All of these files reside in install_dir\bin\
($OV_BIN):
ipmap Runs under ovw to automatically draw IPX and IP
topology maps representing your network.
mibform, mibtable, rnetstat, findroute, rbdf, rnetstat, rping
Commands executed by xnmappmon that enable you to
monitor and diagnose problems in your TCP/IP
network.
ovw The service that provides map drawing, map editing,
and menu management. When you start the OVW
services by executing the ovw command, ovw
automatically invokes ipmap, xnmevents, and the other
applications, which register to be started by ovw.
xnmappmon The Application Encapsulator that displays textual
results of monitoring operations for managed SNMP
objects selected from the map.
xnmbrowser The Tools:SNMP MIB Browser menu item that enables
you to get and set MIB values for Internet-standard
and enterprise-specific MIB objects.
xnmbuilder The Options:MIB Application Builder:SNMP menu
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item that enables you to build custom screens to
manage multivendor MIB objects. The information you
define using the MIB Application Builder is stored in
registration files and help files using mibform,
mibtable, and xnmgraph.
xnmcollect The Options:Data Collection & Thresholds:SNMP
menu item that enables you to configure snmpCollect
to collect MIB data from network objects at regular,
configurable intervals. The configuration information
is stored in the install_dir\conf\snmpCol.conf
($OV_CONF/snmpCol.conf) and snmpRep.conf
configuration files. The collected data are stored in files
in the install_dir\databases\snmpCollect
($OV_DB/ snmpCollect) directory.
xnmevents The alarm browser that is automatically invoked by
ovw to display events that are being received by pmd.
xnmevents reads the install_dir\log\xnmevents
($OV_LOG/xnmevents).username.map file only at
start-up for events that occurred since the last time
xnmevents was run. xnmevents reads the event
database only at start-up to obtain those pending
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events. xnmevents also reads trapd.conf to obtain
information about how to customize event messages.
xnmgraph The tool that enables you to graph the results of
monitoring operations for managed SNMP objects
selected from the map. The results may be real-time or
collected historical data.
xnmloadmib The Options:Load/Unload MIBs:SNMP menu item
used to load new Internet-standard or
enterprise-specific MIBs into the loaded MIB database.
xnmpolling The Options:Network Polling
Configuration->IP/IPX menu item that updates the
polling configuration.
xnmsnmpconf The Options:SNMP Configuration menu item that
enables you to add, delete, and modify SNMP
configuration parameters and the netmon status
polling interval. The SNMP configuration parameters
include community name, set community name,
timeout interval, number of retries, and proxy
information.
xnmtrap The event configurator invoked by the Options:Event
Configuration menu item that enables you to define
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enterprise-specific events (traps). You can customize
the alarm message displayed through xnmevents when
a particular event arrives. You can also specify a
command or a batch file that should be executed when
a particular event arrives. Event configuration changes
are stored in the install_dir\conf\C\trapd.conf
($OV_CONF/$LANG/trapd.conf) configuration file.
Web CGI Programs
The following programs are CGIs, which access HP OpenView’s web
applications. See the OVWebURLIntro reference page in NNM’s online
help (or the UNIX manpage) for more information about (*) only. The
others are used internally by NNM and listed only for your information.
jovw.exe * Starts the Network Presenter.
jovwreg.exe Called by the Network Presenter to parse menu
information from application registration files
registered with the Network Presenter. Also parses
symbol and enroll information from registration files
registered with ovw.
nnmRptConfig.exe* Launches the Report Configuration interface.
nnmRptPresenter.exe* Launches the Report Presenter.
ovalarm.exe* Launches the Alarm Browser user interface.
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ovlaunchreg.exe Reads the Launcher registration files (WLRFs),
passing input to the Launcher window for display.
ovlaunch.exe* Launches the HP OpenView Launcher and opens the
user login screen, when UserLogin is set.
ovlogin.exe Processes the user login screen. Should not be called as
a standalone URL.
ovsessioninfo.exe Collects session information from the ongoing
session.
ovwebdata.exe Tool for accessing NNM data stores via read-only http
queries.
OvHelp The NNM 5.0 help CGIs.
OvWebHelp.exe The NNM 6.0 help CGIs.
printsession.exe Browser-callable URL to present user session
information.
snmpviewer.exe * Launches the SNMP Data Presenter, or displays
textual or graphical results of SNMP monitoring
operations on your browser.
webappmon.exe Application encapsulator used by SNMP Data
Presenter.
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Handover Checklist &
Sign-off
Network Node Manager
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