This chapter provides information on starting the DLSw, RSRB, and APPN/SNASw Motif applications, discovering network devices, using the cwbinit preferences file, and starting the CiscoWorks Blue web server for those using UNIX workstations.
This chapter contains the following main sections:
This section describes how to start the DLSw application. You can start the DLSw application from the workstation system prompt or from a network management system (NMS), such as NetView for AIX.
Before you start the DLSw application, you should identify at least one or two routers as key devices. If you do not identify key routers in the seed file, the DLSw application cannot display its key devices view and it prompts you to either designate key devices or select another view of the network. You can designate key devices in one of the following ways:
The term network management system (NMS) refers to NetView for AIX, HP OpenView, or Sun Net Manager on the network management workstation.
You can provide network information to DLSw in two ways:
You can use the database maintained by an NMS.
You can list all the network devices in a seed file.
If you do not have an NMS, or if the NMS is not up-to-date, or if the NMS database is so large that you do not want a map application to query every device listed, you can create a seed file. A seed file is a text file that lists the routers, and their read community strings, that you want recognized by a specific Maps application. Supply this seed file to the Maps application for each protocol using the procedure in the "Discovering the Network" section.
If you are using an NMS database, verify that the NMS has current data to share with Maps applications before you start DLSw. Even if the NMS is not running at this time, verify that it has been run recently in automanage mode. Also, make sure you ran the discovery process at least once since the last installation of new routers, or reconfiguration of existing routers. If you want to discover new routers as they come online, the NMS must be running in automanage mode continually.
The collection of information and graphical representation of DLSw devices and peer states in the network is usually automatic. You can see a representation of a complete DLSw network, or a narrowed perspective of the DLSw network, including Token Rings, routers, peer statistics, circuit lists and links.
Starting DLSw from a Network Management System
You can start the DLSw application from an NMS, such as NetView for AIX. To start DLSw from an NMS:
On SunNet Manager, select Tools > CWB-DLSW from the menu bar.
On HP-OV and NetView for AIX, select CWBlue > DLSW from the menu bar.
Starting DLSw from a System Prompt
You can start DLSw from any valid user account. The installation process establishes a sample default user account named cwblue. The user cwblue does not have a starting password. You can either assign a password to cwblue or log in as root and change to cwblue.
To start the DLSw application from a UNIX workstation system prompt, use the cwb start dlsw command, which defines the environment variables, starts the DLSw monitor and poller daemons, and then calls the dlsw executable. Enter the following commands:
cd /opt/CSCOcb/bin
./cwb start dlsw
Starting DLSw from a Remote Workstation
You can log in to a remote UNIX host from your own local UNIX workstation, export the remote host display to your local workstation, and then run the application from the remote host. To start the remote host's DLSw application from your local workstation, use the following procedure:
Step 1 At your local UNIX workstation, enter the following command:
xhost +
Step 2 Log in to the remote UNIX host.
Step 3 Set your DISPLAY environment variable to export the display from the remote host to your local workstation. Depending on which shell you are using, use one of the following commands.
From the K shell (ksh):
export DISPLAY=IP_address:0.0
From the C shell (csh) or TC shell (tcsh):
setenv DISPLAY IP_address:0.0
Step 4 To start DLSw, enter the following commands:
cd /opt/CSCOcb/bin
./cwb start dlsw
Starting the Monitor and Poller Daemons
When you start DLSw, the cwb start dlsw command uses the runprocess script to start the monitor and poller daemons. The monitor and poller daemons monitor the changes in the network, update the database accordingly, and notify the DLSw application when network changes occur. When you exit the DLSw application, all daemons continue to run to maintain the database. If you want to stop them, use the Process Manager, as described in "Using the Process Manager."
DLSw Initial Startup Sequence
This section describes what happens when you start DLSw for the first time (or when you select View > Key Devices from the menu bar).
When it first starts, DLSw tries to display a special view called the key devices view. The key devices view displays the routers that you designated as key devices.
If no devices are specified as key routers, the key devices view is empty. DLSw determines whether there are any routers enabled for DLSw in the database. Based on its finds DLSw-enabled routers in the database, DLSw proceeds as described in the following sections:
If the key devices view is empty and there are no DLSw routers in the database, then discovery was not done. DLSw displays the following message:
Key devices discovery needs to be performed.
Please create a seed file with "key" tags in it.
After that, select Admin->Discover->Seed File.. on that seed file.
OK?
Select Admin > Discover > Database or Admin > Discover > Seedfile to discover the network. Now retry the key devices view. If the key devices view is still empty, go to the "DLSw Routers in the Database" section.
DLSw Routers in the Database
If the key devices view is empty, but DLSw routers exist in the database, then discovery was done but no key routers were designated. DLSw displays the message window, as shown in Figure 8-1.
Figure 8-1 No DLSw Key Devices Window
You have the following choices:
Click Select From List in the message window to select key routers from a displayed list of routers.
Click OK to close the window, then select View > Global or View > Focus from the menu bar to display a global view or a focus view. (At some later time, you should designate at least one key router, as described in the "Define Key Devices" section.)
Click OK to close the window., then use a text editor to create a new seed file with designated key devices. For information about how to designate key devices, see the "Define Key Devices" section. Now select Admin > Discover > Seed File from the menu bartodiscover the networkandrefresh the view.
Note If you select View > Focus or View > Global, and then select
Admin > Discover > Seed File, the DLSw application refreshes the
current focus view or global view. It does not change to the key
devices view.
Using the cwbinit Preferences File
The cwbinit file contains a set of startup options and variables with which the DLSw application starts. However, if you start DLSw with command-line options, the command-line options override the options set in the cwbinit file. These DLSw parameters in the cwbinit file are used only by the DLSw poller when it starts. If you change the cwbinit file while the poller is running, you must reset the poller to enable the changes in cwbinit.
To reset the poller, use the Process Manager or enter the following commands from the command prompt:
/opt/CSCOcb/bin/cwb stop cwbdlswpollerd
/opt/CSCOcb/bin/cwb start cwbdlswpollerd
For each variable that you set in cwbinit, ensure that there is a space before and after the equal sign. For example, to set the eventgen variable off, enter the following line in cwbinit:
eventgen = off
The following cwbinit file sample shows only the values that apply to the DLSw application:
Cisco Works Blue Maps and SNA View preferences file
# CWBlue applications first check for a user-customized version of
# this file as $HOME/.cwbinit. If the file is not found there, they
# use the installed version at $CWBROOT/etc/cwbinit.
# RULES:
# Keywords must start in column 1.
# There must be a space on each side of the = character.
# Everything on the right of the = character is taken as the value contents.
# Comments must start with # in column 1 only.
# Comments cannot be included on lines with keywords and values.
# This parameter controls how often cwbdlswpollerd and cwbsnamapsd # will check to see if another process has requested that it recycle # itself. Other processes make this request after APPN/SNASw, TN3270, and/or # DLSW discovery/rediscovery and after DLSW key routers are assigned. # The DLSw poller and cwbsnamapsd processes periodically check to see # if a restart request has been made. The value supplied is in # seconds.
processRestartInterval = 30
# to turn off event generation set eventgen = off.
# valid values : on/off. default value : on.
eventgen = on
# to turn on device state change event generation set eventgen_device # = on.
# valid values : on/off. default value : off.
eventgen_device = off
# ***********************
# *** DLSw parameters ***
# ***********************
# These parameters are used by the DLSw poller. If the poller is # already running, it must be stopped and restarted from the process # manager, or from the command line as follows:
# $CWBROOT/etc/runprocess cwbdlswpollerd -f
# *** DLSw event generation parameters ***
# to turn off dlsw peer event generation set eventgen_dlswpeercxn = # off. valid values : on/off. default value : on.
eventgen_dlswpeercxn = on
# to turn on dlsw circuit event generation set eventgen_dlswcircuit = # on. valid values : on/off. default value : off.
eventgen_dlswcircuit = off
# *** DLSw polling parameters ***
# to set key routers polling timer set keyPeerSleepTime = <number of # seconds. valid range of values : 0 to 65535 seconds. default value : # 600 seconds.
keyPeerSleepTime = 600
# to turn on slow polling of non-key dlsw peer routers set # pollNonKeyPeer = on. valid values : on/off. default value : on.
# pollNonKeyPeer = on
# to set slow polling timer set nonKeyPeerSleepTime = <number of # seconds. valid range of values : 0 to 65535 seconds. default value : # 600 seconds.
nonKeyPeerSleepTime = 600
# to turn on circuit polling of dlsw key routers set pollKeyCircuit = # on. valid values : on/off. default value : on.
pollKeyCircuit = on
# to set circuit polling timer set keyCircuitPollSleepTime = <number # of seconds. valid range of values : 0 to 65535 seconds. default # value : 1200 seconds.
keyCircuitPollSleepTime = 1200
# to set number of threads for polling key router peer connections set
# numKeyPeerPollThreads = <number>.
# valid range of values : 1 to 10. default value : 5.
numKeyPeerPollThreads = 5
# to set number of threads for polling non-key router peer connections # set numNonKeyPeerPollThreads = <number>.
# valid range of values : 1 to 10. default value : 1.
numNonKeyPeerPollThreads = 1
# to set number of threads for polling key router circuits
# set numKeyCircuitPollThreads = <number>.
# valid range of values : 1 to 10. default value : 1.
numKeyCircuitPollThreads = 1
# to set sleep time for directed poll set
# directedPollSleepTime = <number of seconds>.
# valid range of values : 0 to 65535 seconds. default value : 0.
You can configure the DLSw application to generate event notifications (trap messages) when specific network events occur. These events can include device state changes, peer connection state changes, and changes to the status of a circuit. When a specified network event occurs, DLSw sends an event notification to the UNIX NMS.
Use the following event values in the cwbinit file to specify whether to send event notifications and to configure which events will cause trap messages to be sent.
Use the eventgen value to set event notification on and off. If you set eventgen = on, event notification is enabled. The default setting is on.
Use the eventgen_device value to set device-state event notification on and off. If you set eventgen_device = on, an event notification is generated whenever a device state changes. The default setting is off.
Use the eventgen_dlswpeercxn value to set peer-connection event notification on and off. If you set eventgen_dlswpeercxn = on, an event notification is generated whenever a DLSw peer connection state changes. The default setting is on.
Use theeventgen_dlswcircuit value to set circuit-state event notification on and off. If you set eventgen_dlswcircuit = on, an event notification is generated whenever a DLSw circuit state changes. The default setting is on.
After you configure the event notification options, DLSw will send trap messages to the NMS at your UNIX workstation. "Event Notification Messages," describes the trap messages sent by the Maps applications.
Using cwbinit to Configure Process Restarting Intervals
Use the processRestartInterval value to control how often, in seconds, the cwbdlswpollerd and cwbsnamapsd processes check to see whether some other process has requested that it recycle itself. Other CiscoWorks Blue processes make this request after APPN/SNASw, TN3270, and DLSW discovery and rediscovery, and after DLSW key routers are assigned. The DLSw poller and cwbsnamapsd processes periodically check to see if a restart request has been made. The default value is 30 seconds.
Using cwbinit to Configure Polling Intervals
You can configure how the DLSw application polls routers for peer connection information and for circuit information. You can select from the following polling methods:
Key-Peer polling polls just key routers for peer connection information. To control the Key-Peer polling rate use the KeyPeerSleepTime option of the cwb start cwbdlswpollerd command, as described in "CiscoWorks Blue Commands and Processes."
Non-Key-Peer polling polls just the non-key routers for peer connection information. To control the Non-Key-Peer polling rate, use the nonKeyPeerSleepTime value.
Key-Circuit polling polls just the key routers for circuit information. To control the Key-Circuit-Peer polling rate, use the keyCircuitPollSleepTime value. To control the Key-Router polling rate, use the keyPeerSleepTime value:
If you make no changes, the DLSw polling daemon uses all three polling methods: it polls key routers and non-key routers for peer connection information, and it polls key routers for circuit information. You can change these selections using the following polling values in the cwbinit file.
Use the pollNonKeyPeer value to set non-key-peer polling on and off. If you set it on, non-key routers are polled for peer connection information. The default value is on.
Use the nonKeyPeerSleepTime value to specify the sleep time for non-key-peer polling. This sleep-time value determines how many seconds the poller daemon waits after polling all the non-key routers before it starts polling them again. The valid range is from 0 to 65535 seconds. The default value is 600seconds.
Use the pollKeyCircuit value to set key-circuit polling on and off. If you set it on, circuit polling is enabled; key routers are polled for circuit information. The default value is on.
Use the keyCircuitPollSleepTime value to set the sleep time value for key-circuit polling key routers for their circuits. This sleep-time value determines how many seconds the poller daemon waits after polling all the key routers before it starts polling them again. The valid range is from 0 to 65535 seconds. The default value is 1200seconds. You can override the keyCircuitPollSleepTime value using the -C PollingSleepTime value on the cwbdlswpollerd daemon, as described in "CiscoWorks Blue Commands and Processes."
Use the keyPeerSleepTime value to set the sleep time value for polling key routers for the peer tables to keep the maps current. This sleep-time value determines how many seconds the poller daemon waits after polling all the key routers before it starts polling them again. The valid range is from 0 to 65535 seconds. The default value is 600seconds. You can override the keyPeerSleepTime value using the PollingSleepTime value on the cwbdlswpollerd daemon, as described in "CiscoWorks Blue Commands and Processes."
Use the numKeyPeerPollThreads value to define the number of threads that can be used for key-peer polling. You can set this value to a number in the range 1 to 10. The default value is 5 threads. If you increase this value, DLSw increases the number of routers that are polled concurrently, but uses more network bandwidth.
Use the numNonKeyPeerPollThreads value to define the number of threads that can be used for polling non-key routers for peer connection information. You can set this value to a number in the range 1 to 10. The default value is 1 thread.
Use the numKeyCircuitPollThreads value to define the number of threads that can be used for circuit polling. You can set this value to a number in the range 1 to 10. The default value is 1 thread.
Use the directedPollSleepTime value to set a sleep time for directed polling. Directed polls go to a non-key router when a key router reports a lost connection. This verifies the status of the remote router. When you define a number of threads for key-router polling, non-key-router polling, and circuit polling, the poller daemon adds one extra thread for additional polling of remote routers. This sleep-time value determines how many seconds this extra thread waits after polling is complete before it starts polling again. The valid range is from 0 to 65535 seconds. The default value is 0seconds. You can increase this setting to slow down the rate of directed polling of remote routers.
Use the additionalPollRouterList value to add specific non-key routers to the key-peer polling list. This entry is terminated with a carriage return; the entire entry must be no more than 100 characters. For example, to add non-key routers named routera.domain.com and routerb.domain.com to the key-router polling list (but not to the key devices view), you would add this line to the cwbinit file:
The peerDownAction and circuitDownAction event generation exits let you create your own exit routines to handle situations in which key routers do not respond to polling for peer connection information or for circuit information.
Use the peerDownAction value to define a program to be run when routers do not respond to polling for peer connection information. Replace the string executableName with the name of your application. The poller daemon calls your application with the following command format:
user_application is the name of the program that you supply.
local_IP_address is the IP address of the local peer.
remote_IP_address is the IP address of the remote peer.
Use the circuitDownAction value to define a program to run when key routers do not respond to polling for circuit information. Replace the string executableName with the name of your application. The poller daemon calls your application with the following command format:
user_applicationis the name of the program that you supply.
MACAddress1 is the MAC address of the local peer.
SAP1 is the SAP of the local peer.
MACAddress2 is the IP address of the remote peer.
SAP2 is the SAP of the remote peer.
When your exit routine is invoked by one of these exits, you have the followig options:
You can write a troubleshooting application to further investigate the problem and do some error correction at the router.
You can send the information passed by the exit to a network administrator for further action.
Starting RSRB
This section describes how to start the RSRB application. You can start the RSRB application either from the workstation system prompt or from a NMS, such as NetView for AIX.
Verifying the Network Management System
The term network management system (NMS) refers to NetView for AIX, HP OpenView, or Sun Net Manager on the network management workstation.
You can provide network information to RSRB in two ways. You can use the database maintained by an NMS, such as NetView for AIX, HP OpenView, or Sun Net Manager, or you can list all the network devices in a seed file. If you do not have an NMS, or if the NMS is not up-to-date and cannot be updated, or if you know the NMS database is so large that you do not want a map application to spend the time querying every device listed there, you can create a seed file. A seed file is a text file that lists the routers, and their read community strings, that you want to be recognized by a specific Maps application. Supply this seed file to the Maps application for each protocol using the procedure in the "Discovering the Network" section.
If you are using an NMS database, verify that the NMS has current data to share with Maps applications before you start RSRB. Even if the NMS is not running at this time, verify that it has been run recently in automanage mode or that you have run the discovery process at least once since the last installation of new routers or reconfiguration of existing routers. If you want to discover new routers dynamically as they come online, the NMS must be running in automanage mode continually.
The collection of information and graphical representation of RSRB devices and peer states in the network is usually automatic. You can see a representation of a complete RSRB network or a narrowed perspective of the RSRB network, including virtual rings, physical rings, routers, and links.
Starting the RSRB Application from a Network Management System
You can start the RSRB application from an NMS such as NetView for AIX. To start RSRB from an NMS:
On SunNet Manager select Tools > CWB-RSRB from the menu bar.
On HP-OV and NetView for AIX select CWBlue > RSRB from the menu bar.
Starting RSRB from a System Prompt
You can start RSRB from any valid user account. The installation process establishes a sample default user account named cwblue. The user cwblue does not have a starting password. You can either assign a password to cwblue or log in as root and change to cwblue.
To start the RSRB application from a UNIX workstation system prompt, enter the command shown below:
cd /opt/CSCOcb/bin
./cwb start rsrb
Starting RSRB from a Remote Workstation
You can log in to a remote UNIX host from your own local UNIX workstation, export the remote host display to your local workstation, and then run the application from the remote host. To start the remote host's RSRB application from your local workstation, use the following procedure:
Step 1 At your local UNIX workstation, enter the following command:
xhost +
Step 2 Log in to the remote UNIX host.
Step 3 Set your DISPLAY environment variable to export the display from the remote host to your local workstation. Depending on which shell you are using, use one of the following commands:
From the K shell (ksh):
export DISPLAY=IP_address:0.0
From the C shell (csh) or TC shell (tcsh):
setenv DISPLAY IP_address:0.0
To start RSRB, enter the following commands:
cd /opt/CSCOcb/bin
./cwb start rsrb
Starting the Monitor and Poller Daemons
When you start RSRB, the cwb start rsrb command script automatically starts the monitor and poller daemons that monitor the changes in the network and update the database accordingly. When you exit the RSRB application, all daemons continue to run to maintain the database. If you want to stop them use the Process Manager, as described in "Using the Process Manager."
Starting APPN/SNASw
You can start the APPN/SNASw application from the workstation system prompt, from a remote workstation, or from an NMS, such as NetView for AIX.
Starting APPN/SNASw from the System Prompt
You can start APPN/SNASw from any valid user account. The installation process establishes a sample default user account named cwblue. The user cwblue does not have a starting password. You can either assign a password to cwblue or log in as root and change to cwblue.
To start the APPN/SNASw Maps application from a system prompt, enter the following commands:
-fdevicename specifies the host name or IP address of an APPN node to be used as the network topology agent.
Note For SNASw networks, do not specify the -f parameter.
-rread_community_string specifies the read community string for the router specified by devicename.APPN/SNASw uses the read_community_string value when communicating with an APPN/SNASW node. If you do not enter a read community string, the APPN/SNASW application uses the default read community string specified in the cwbinit file or, if there is not one there, the default string "public."
Note For SNASw networks, do not specify the -r parameter.
-v displays version information.
-h displays online help.
Starting APPN/SNASw from a Remote Workstation
You can log in to a remote UNIX host from your own local UNIX workstation, export the remote host display to your local workstation, and then run the application from the remote host.
To start the remote host's APPN/SNASW application from your local workstation, use the following procedure:
Step 1 At your local UNIX workstation, enter the following command:
xhost +
Step 2 Log in to the remote UNIX host.
Step 3 Set your DISPLAY environment variable to export the display from the remote host to your local workstation. Depending on which shell you are using, use one of the following commands:
From the K shell (ksh):
export DISPLAY=IP_address:0.0
From the C shell (csh) or TC shell (tcsh):
setenv DISPLAY IP_address:0.0
Step 4 To start APPN/SNASW, enter the following commands:
-fdevicename specifies the host name or IP address of an APPN/SNASw node to be used as the network topology agent. APPN/SNASw displays a global view at startup.
-rread_community_string specifies the read community string for the router specified by devicename. APPN/SNASw uses the read_community_string value when communicating with APPN/SNASw nodes. If you do not enter this value, the program uses the default read community string "public," unless another default string is specified in the cwbinit file.
-v displays version information.
-h displays online help.
Starting APPN/SNASw from a Network Management System
You can start APPN/SNASw from an NMS like NetView for AIX. To start APPN/SNASw from an NMS:
On SunNet Manager select Tools > CWB-APPN from the menu bar.
On HP-OV and NetView for AIX select CWBlue > APPN/SNASw from the menu bar.
Starting APPN/SNASw with No Options
If you start APPN/SNASw from NetView, or if you do not enter any options with the cwb start appn command, the APPN/SNASw application looks in its preferences file, /opt/CSCOcb/etc/cwbinit, for the control point (CP) name, or for an IP address or device name (and read community string) of a network topology agent. If a network topology agent is not specified in the cwbinit file, APPN/SNASw polls all discovered APPN/SNASw routers and does not use a network topology agent.
Note When you first start APPN/SNASw, select Admin > Discover to
discover the APPN/SNASw routers in your network.
Selecting a Network Topology Agent
This section describes how you can select a network topology agent, which is an APPN network node that provides information about the backbone APPN/SNASw network. A network topology agent is optional.
Because a mechanism exists to poll only for updates, specifying a network topology agent makes for more efficient monitoring of the backbone APPN/SNASw topology.
Note An SNASw branch network node cannot serve as a network
topology agent.
The cwbinit file contains a set of startup options and variables for the APPN/SNASw application. However, if you start APPN/SNASw with command-line options, the command-line options override the options set in the cwbinit file.
These APPN/SNASw parameters in the cwbinit file are used only when you issue the cwb start appn command. If you change the cwbinit file while the APPN/SNASw application is running, you must stop and restart the APPN/SNASw application to activate the changes in cwbinit.
To reset the APPN/SNASw application, select File > Exit Program from the APPN/SNASw menu bar. Then restart the APPN/SNASw application using the following command:
cd /opt/CSCOcb/bin
./cwb start appn
For each variable you set in cwbinit, ensure that there is a space before and after the equal sign. For example, to turn off the eventgen variable, you would enter the following line in cwbinit:
eventgen = off
Each APPN/SNASw user can have a private cwbinit file. If the APPN/SNASw application cannot find the file $HOME/.cwbinit, it uses the file /opt/CSCOcb/etc/cwbinit. You might want to use a set of private cwbinit files to monitor different APPN/SNASw networks from different user IDs.
The following shows a sample cwbinit file stored during installation of CiscoWorks Blue Maps:
# Cisco Works Blue Maps and SNA View preferences file
# CWBlue applications first check for a user-customized version of
# this file as $HOME/.cwbinit. If the file is not found there, they
# use the installed version at $CWBROOT/etc/cwbinit.
# RULES:
# Keywords must start in column 1.
# There must be a space on each side of the = character.
# Everything on the right of the = character is taken as the value contents.
# Comments must start with # in column 1 only.
# Comments cannot be included on lines with keywords and values.
# This parameter controls how often cwbdlswpollerd and cwbsnamapsd # will check to see if another process has requested that it recycle # itself.
# Other processes make this request after APPN/SNASw, TN3270, and/or DLSW
# discovery/rediscovery and after DLSW key routers are assigned. The # DLSw poller and cwbsnamapsd processes periodically check to see if a # restart request has been made. The value supplied is in seconds.
processRestartInterval = 30
# to turn off event generation set eventgen = off.
# valid values : on/off. default value : on.
eventgen = on
# to turn on device state change event generation set eventgen_device = on.
# valid values : on/off. default value : off.
eventgen_device = off
.
. [DLSw parameters Removed]
# ***********************
# *** APPN/SNASw parameters ***
# ***********************
# These parameters are used by both appn and cwbsnamapsd. If either
# are already running, they must be stopped and restarted for changes
# to take effect.
# Selection of the network topology agent is done in this order:
# 1) command line parameters, if any;
# 2) parse this config file.
# 3) user will be prompted to run discovery or enter agent information
#
# #3 applies to appn only. No prompt dialog is given in cwbsnamapsd.
# network topology agent ip address or device name (NOT appn cpname)
nettopoagentdevname =
# network topology agent read community string
nettopordcommstr =
# network topology agent APPN control point name (NETID.CPNAME format)
nettopoagentcpname =
# backup network topology agent ip address or device name (NOT APPN cpname)
backupnettopoagentdevname =
# backup network topology agent read community string
backupnettopordcommstr =
# backup network topology agent APPN control point name (NETID.CPNAME format)
backupnettopoagentcpname =
# default read community string
rdcommstr = public
# automatic collection of local topology (NONE, NN_ONLY, ALL)
autolocaltopo = ALL
# network topology polling interval, in seconds
nettopopoll = 15
# backup network topology polling interval, in seconds
# (in backup mode only, when primary agent fails, backup uses nettopopoll)
backupnettopopoll = 600
# local topology polling interval, in seconds
loctopopoll = 600
# control whether APPN/SNASw polls the DLUR PU table as part of local topology
# polling. To turn off polling for PUs, set appn_pu_polling = off
appn_pu_polling = on
# control whether APPN/SNASw polls the APPN port table as part of local topology
# polling. To turn off polling for ports, set appn_port_polling = off
appn_port_polling = on
# control whether APPN/SNASw polls the APPN link table as part of local topology
# polling. To turn off polling for links, set appn_link_polling = off
appn_link_polling = on
# This option controls TG event generation.
# To turn off TG event generation, set eventgen_tg = off.
# To generate event for existing TGs when an operational state change
# is detected, set eventgen_tg = on.
# To generate events for existing TGs when an operational state change
# is detected and for newly created operational (active) TGs,
# set eventgen_tg = all.
# Exception: No events are generated for TGs created on
# the first poll cycle. This avoids a storm of events during
# process startup.
# valid values: on/off/all
eventgen_tg = on
# to turn off dlur session event generation set eventgen_dlur = off
# valid values : on/off
eventgen_dlur = on
# to turn on port event generation set eventgen_port = on
# valid values : on/off
eventgen_port = off
# to turn on link event generation set eventgen_link = on
# valid values : on/off
eventgen_link = off
# This option controls the CWBlue cache deletion of TGs that are no # longer reported by local topology agents. A Cisco IOS change was # made to delete inactive dynamic TGs from the router database.
# To delete TGs that are no longer reported by the agent,
# set this parameter to 'off'.
# To keep those TGs in the CWBlue cache, set this parameter to 'on'. If TG
# events are enabled, this will trigger an event if the TG becomes
# operational again.
# valid values:on/off
keep_deleted_tgs = off
Using cwbinit to Specify a Network Topology Agent
You can use the cwbinit file to specify a network topology agent for APPN in one of the following ways:
Note Do not use this parameter for SNASw routers.
You can specify the host name or IP address and read community string of a single APPN node from which to collect network topology. Use the nettopoagentdevname and nettopordcommstr variables in the cwbinit file to identify the agent name and read community string.
You can specify the APPN CP name, in NETID.CPNAME format, of a single APPN node from which to collect network topology. Use the nettopoagentcpname variable in the cwbinit file to identify the CP name.
If you specify a network topology agent in the cwbinit file, you can also specify a backup network topology agent in the cwbinit file. Specify the backup network topology agent in one of the following ways:
You can specify the host name (or IP address) and read community string of the backup network topology agent. Use the backupnettopoagentdevname andbackupnettopordcommstr variables in the cwbinit file to identify the backup agent name and read community string.
You can specify the APPN CP name, in NETID.CPNAME format, of the backup network topology agent. Use the backupnettopoagentcpname variable in the cwbinit file to identify the backup agent CP name.
If APPN cannot collect network topology from the agent you identify, it tries again, using the interval specified by the nettopopoll variable in the cwbinit file.
Using cwbinit to Configure Process Restarting Intervals
Use the processRestartInterval value to control how often, in seconds, the cwbdlswpollerd and cwbsnamapsd processes check to see whether some other process has requested that it recycle itself. Other CiscoWorks Blue processes make this request after APPN/SNASw, TN3270, and DLSW discovery and rediscovery and after DLSW key routers are assigned. The DLSw poller and cwbsnamapsd processes periodically check to see if a restart request has been made. The default value is 30 seconds.
Using cwbinit to Set the Frequency of APPN/SNASw Polling
Network topology polling is the periodic collecting of data from the network topology agent. Local topology polling is the periodic collecting of data from each APPN/SNASw node.
Because the overhead of network topology polling is less than the overhead of local topology polling, the APPN/SNASw application performs network topology polling more frequently than local topology polling. To control the polling frequency, use the nettopopoll, loctopopoll, and backupnettopopoll parameters in the cwbinit file.
You can use the appn_pu_polling parameter to control polling for PU information. If you set appn_pu_polling = on, APPN/SNASw polls for PU information at the interval specified by the loctopopoll parameter. The appn_pu_polling parameter affects polling only; it does not affect the collecting of local topology when you select Get Local Topology from a popup menu.
Using cwbinit to Facilitate the Generation of Views
The APPN/SNASw application collects and stores local topology data collected from an APPN/SNASw node. The APPN/SNASw application usually collects local topology data on demand, such as when the generation of a view requires it. To expedite the generation of some views, and to assure the completeness of adjacent-node views, set the autolocaltopo parameter to one of the following values:
ALL automatically polls local topology data from all APPN/SNASw nodes for which SNMP information is already available at the interval specified by the loctopopoll parameterin the cwbinit file. ALL is the default.
NN_ONLY automatically polls local topology data only from network nodes (including branch network nodes) for which SNMP information is already available at the interval specified by the loctopopoll parameterin the cwbinit file.
NONE does not poll local topology data automatically.
Using cwbinit to Configure Event Notification
You can configure the APPN/SNASw application to generate event notifications (trap messages) when specific network events occur. These network events can include changes to a transmission group's state, changes to a DLUS-DLUR session state, and changes to the status of a node, a port, or a link. When the specified network event occurs, APPN/SNASw sends a trap message to the NMS.
Use the following event values in the cwbinit file to specify whether to send event notifications and to specify which events will cause trap messages to be sent:
Use the eventgen value to set event notification on and off. If you set eventgen = on, event notification is set on (enabled). If you set eventgen = off, all event notification is set off (disabled) regardless of the settings of other parameters.
Use the eventgen_device value to set device-state event notification on and off. If you set eventgen_device = on, an event notification is generated whenever a device state changes.
Use the eventgen_tg value to set TG event notification on and off.
Set eventgen_tg=on to generate an event when an existing TG has a change in operational status.
Set eventgen_tg=off to not generate events for any TG status changes.
Set eventgen_tg=all to not generate an event whenever an existing TG has a change in operational status and when a new TG becomes active.
Events are not generated during the first polling cycle for each agent to prevent events for every active TG from being sent because all TGs will be new to the CiscoWorks Blue cache.
Use theeventgen_dlur value to set DLUR-state event notification on and off. If you set eventgen_dlur = on, an event notification is generated whenever a DLUR state changes.
Use the eventgen_port value to set port-state event notification on and off. If you set eventgen_port = on, an event notification is generated whenever a port state changes.
Use the eventgen_link value to set link-state event notification on and off. If you set eventgen_link = on, an event notification is generated whenever a link state changes.
After you configure the event notification options, APPN/SNASw will send trap messages to the NMS at your UNIX workstation. "Event Notification Messages," provides a list and descriptions of the trap messages sent by the Maps applications.
Using cwbinit to Specify Whether to Delete Inactive TGs
Use the keep_deleted_tgs=on value to keep inactive TGs in the Maps and SNA View cache. The Cisco IOS software deletes inactive dynamic TGs from the router database. If you want to keep those inactive TGs in the Maps and SNA View cache, set the keep_deleted_tgs=on option in the cwbinit file. If you want to delete those inactive TGs from the Maps and SNA View cache, set the keep_deleted_tgs=off option in the cwbinit file.
