Setting Up ZENworks for Servers 3 Traffic Analysis Agents

ZENworks for Servers 3 provides traffic analysis agents and RMON agents for both NetWare and Windows NT/2000 to enable you to monitor heterogeneous LANs. These agents collect information about activity on your network and relay that information back to the management agent, which in turn sends it to the management console for viewing.

The following sections describe how to set up and use the traffic analysis agents for both NetWare and Windows NT/2000.

Setting Up the Traffic Analysis Agents for NetWare

You should take some time to set up the traffic analysis agents on the NetWare Servers on which they are installed. This involves setting the SNMP parameters, modifying the LANZ.NCF file, and restarting the agents.

Configuring NetWare SNMP Parameters

The first step in setting up ZENworks for Servers 3 traffic analysis agents on NetWare Servers is to configure the SNMP parameters. This involves setting the appropriate read, write, and error-handling options for your agent server.

Follow these steps to configure the SNMP parameters on NetWare servers:

  1. At the traffic analysis agent server, load the INETCFG utility.

  2. From the Internetworking Configuration screen in the INETCFG utility, select Manage Configuration Configure SNMP Parameters.

  3. From Monitor Community Handling options, select Specified Community May Read, and then enter public for the community name.

  4. From Control Community Handling options, select Specified Community May Write, and then enter public for the community name.

  5. From Trap Handling options, select Send Traps with Specified Community, and then enter public for the community name.

  6. Press ESC to exit from the SNMP Parameters screen and save changes.

  7. Press ESC again to exit from the Internetworking Configuration screen and restart the server. These are not changes that the Reinitialize System command makes. For these changes to take place, you have to unload and reload SNMP, and that is done by restarting the server.

Modifying the LANZ.NCF File

The LANZ.NCF file is a script used to launch the traffic analysis agent on NetWare servers. You can modify the LANZ.NCF file to customize agent loading. Use a text editor to modify the commands in Table 10.7 to customize your LANZ.NCF file.

Table 10.7. LANZ.NCF File Commands for the Traffic Analysis Agents

COMMAND

DESCRIPTION

LOAD LANZSU DEBUG=1

Enables the LANZ control screen. Add the DEBUG=1 option to turn on the LANZ control screen, which reports significant events for traffic analysis agent on NetWare.

#LOAD LANZFCB

Disables packet capturing to prevent someone from observing secure traffic to and from the server. Comment out the load line for LANZFCB by putting a # sign in front of the statement to disable packet capturing.

LOAD LANZSM DUPIP=0

Disables generation of duplicate IP address alarms to prevent alarm generation in a DHCP environment. Add the DUPIP=0 option to disable duplicate IP address alarms.

LOAD LANZDI LEVEL=1

Sets packet flow control to yield to other server operations when traffic is high. This reduces the impact of traffic analysis on the server. Add the LEVEL=1 option to enable flow control.

LOAD LANZMEM BOUND=####

Sets the upper limit of available memory to increase the memory that the traffic analysis agents will take. Add the BOUND=#### option to set the amount of memory (####) traffic analysis will use before returning an out-of-memory error.

LOADLANZMEM BOUND=3072 AGE=###

Sets the amount of time the traffic analysis agent will hold data in memory. Add the age to specify the amount of time, measured in hours, that traffic analysis data will be left in memory before it is purged.

LOAD LANZSM TOPN=#

Sorts the number of concurrent sort computations per network adapter. Add the TOPN=# to set the number, between 2 and 10, of sort computations.

LOAD LANZCTL TRAPREG=1

Enables alarms to be sent automatically to the management console. Add the TRAPREG=1 option to tell the traffic analysis agent to automatically send SNMP alarms to management consoles.

LOAD LANZTR POLL=#

Enables/disables polling of source routed bridges on token ring networks. Add the POLL=# option, where # = 0 for off or # = 1 for on, to turn polling of source routed bridges on or off.

Starting/Stopping the Agent

The ZENworks for Servers 3 LAN traffic agents for NetWare comprise several modules. The following two script files are included with ZENworks for Servers 3 and should be used to start and stop the LAN traffic agents:

  • LANZ.NCF. Script file that loads the LAN traffic agent NLMs

  • ULANZ.NCF. Script file that unloads the LAN traffic agent NLMs

Using the NetWare LANZCON Utility

The LANZCON utility provided with ZENworks for Servers 3 enables you to configure and view the traffic analysis agents. The LANZCON utility is an NLM that is installed into the SYS:LANZ directory on the servers in which the traffic analysis agents were installed.

Load the LANZCON utility on your NetWare Server with the traffic analysis agents running to view and configure the following items:

  • Network Adapter Information. Types of items that the adapter is currently monitoring. You can also enable or disable an adapter from monitoring the network.

  • Agent Status. Status of the selected agent and items related to the agent monitoring the segment.

  • Statistics Information. Packet and event statistics for the selected network adapter.

  • History Information. Provides sampling information collected at intervals for the networks that are being monitored by this agent for example, data source, buckets requested, and buckets granted.

  • Hosts Information. Statistics about specific host or nodes on the monitored network.

  • Matrix Information. Consists of three tables that record information about conversations between pairs of nodes on the monitored segment.

Setting Up the Traffic Analysis Agents for NT/2000

After you set up the traffic analysis agent on your NetWare Servers, you should take some time to set up the traffic analysis agents on your Windows NT/2000 Servers as well. Once again, this involves setting the SNMP parameters and then restarting the agents.

Configuring NT SNMP Parameters

The first step in setting up ZENworks for Servers 3 traffic analysis agents on NT/2000 Servers is to configure the SNMP parameters. This involves setting the appropriate read, write, and error-handling options for your agent server. Follow these steps to configure the SNMP parameters on your Windows NT/2000 servers:

  1. Open the Windows Services Manager dialog box. In Windows NT, double-click on Network in the Control panel and select the Services tab. In Windows 2000, select Start Program Files Administrative Services Services.

  2. Select SNMP Services from the list of services.

  3. Click the Properties button.

  4. Click the Traps tab.

  5. From the Accepted Community Names box, click the Add button.

  6. Enter public in the Service Configuration dialog box.

  7. Click the Add button.

  8. Enter the DNS names or IP addresses of workstations or servers that should receive traps.

  9. Click the Add button.

  10. Click the Security tab.

  11. From the Accepted Community Names, click the Add button.

  12. Enter public in the Service Configuration dialog box.

  13. Set the appropriate rights.

  14. Click the Add button.

  15. Select Accept SNMP Packets from Any Host.

  16. Click the OK button to return to the Network window.

NOTE

If SNMP is not already installed on the NT Server, you have to reboot and get some SNMP errors after you install it from the NT Server CD. To correct this, reapply the NT support pack (whichever one you were on or newer).


Starting/Stopping the SNMP Service

Whenever you make changes to the settings for the SNMP service, you should stop and restart the agent. Follow these steps to stop and restart the traffic analysis agent on a Windows NT/2000 Server:

  1. Open the Services manager.

  2. Select SNMP Services.

  3. Click the Stop Button.

  4. When the agent is stopped, click the Start button.

Using the NT LANZCON Utility

The Windows LANZCON utility provided with ZENworks for Servers 3 enables you to configure and view the traffic analysis agents. The Windows LANZCON utility is an executable that is installed on the desktop of the Windows NT/2000 Servers to which the traffic analysis agents were installed. Load the LANZCON utility on your Windows NT/2000 Server with the traffic analysis agents running to view and configure the following items:

  • Configure LANalyzer Agent. Takes the place of editing the LANZ.NCF file on NetWare servers by letting you enable or disable packet capture and enable/disable station monitoring, and set memory bounds and age (how long to retain packet data before it is too old), concurrent sorting, and duplicate IP address alarms.

  • Network Adapter. Displays a list of network adapters discovered by the agent. You can enable or disable a network adapter from monitoring the network.

  • Agent Log. Displays a list of significant events and errors that occurred during a session.

  • Agent Status. Displays the current status and description of all agents that are installed on the server.

  • RMON Tables. Displays the statistics, history control, history data, host control, host entry, host topN control, host topN entry, matrix control, matrix SD entry, filter, channel, and buffer RMON tables for the network adapter. Also displays the alarm, event, and log RMON tables.

  • SNMP Traps. Displays a list of traps that occurred on the managed segment, including the received time and a summary of the trap.

NOTE

The ZENworks for Servers 3 traffic analysis agent does not have to be installed on every NetWare and NT/2000 Server. You need it installed on only one server (NT/2000 or NetWare) per segment that you want to monitor. This also helps with the discovery process.




Novell's ZENworks for Servers 3. Administrator's Handbook
Novell's ZENworks for Servers 3. Administrator's Handbook
ISBN: 789729865
EAN: N/A
Year: 2003
Pages: 137

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