This section describes the autodiscovery feature of Nways Manager-LAN and the different components for monitoring and receiving information from your LAN Campus network. Each component allows Nways Manager-LAN to communicate with agent programs in network devices to gather configuration, fault, and performance data.
The devices that can be discovered are:
Nways Manager-LAN discovers different network devices according to the components you install and have running, and the agents installed in each device.
Table 37 lists the different Nways Manager-LAN components with:
A Nways Manager-LAN component isinstalled or not installed depending on the SMIT options you selected when installing the product.
When you enter ovstart cmld to start Nways Manager-LAN for AIX, each installed component is started by default.
In the dialog box displayed, select Yes for the capabilities that you want to automatically start when the cmld daemon is started.
Table 37. Nways Manager-LAN for AIX Components: Daemons Used and Agents Discovered
| Component | Daemon Used | Agents Discovered |
|---|---|---|
| LAN Network Manager (LNM OS/2 Agent application) | lnmlnmemon | LNM OS/2 proxy agent |
| LAN Network Manager (SNMP Token-Ring application) | lnmtrmon |
|
| LAN Network Manager (SNMP Bridge application) | lnmbrmon |
|
| LAN Network Manager (FDDI application) | lnmfddimon | FDDI proxy agent |
| 8250, 8260, and 8265 Device Manager | iubd | ADMM, AMM (CPSW with DMM subset),DMM, EMM, FMM, and TRMM |
| Product Specific Modules and Java web-managed applications | not applicable | 2210, 2216, 6611, 8224, 8225, 8230, 8235, 8237, 8238, 8270, 8271, 8272, and 8281 |
| Note: | The Nways Switching Module Manager (NSMM) component of Nways Manager-LAN uses a different method to discover the virtual LANs (consisting of Ethernet and FDDI devices with an ATM uplink) that it manages. For information on how NSMM discovers devices, see the IBM Nways Switching Modules Manager User's Guide shipped with 8260 Switching Series modules. |
Information supplied by agents is discovered by Nways Manager-LAN components in the following ways:
The methods that each Nways Manager-LAN component uses to discover network
devices are shown in Table 38.
Table 38. Nways Manager-LAN for AIX Components: Discovery Method Used
| Component | Automatic Discovery (NetView for AIX) | Persistent Discovery (Known Agents File) | Temporary Discovery (Command Line Interface) |
|---|---|---|---|
| LAN Network Manager (LNM OS/2 Agent application) | -- | X | X |
| LAN Network Manager (SNMP Token-Ring application) | X | X | X |
| LAN Network Manager (SNMP Bridge application) | X | X | X |
| LAN Network Manager (FDDI application) | X | X | X |
| 8250, 8260, and 8265 Device Manager | X | -- | -- |
| Product Specific Modules and Java web-managed applications | X | -- | -- |
For information on the methods of discovery used by the Router and Bridge Manager component, refer to the IBM AIX Router and Bridge/6000: User's Guide (SC31-6489).
The Known Agents file provides a method to persistently discover agents that are not automatically discovered by Nways Manager-LAN. This file is used by each component and contains:
Each record in the file appears as an IP address, optionally followed by a series of agent IDs in the format:
ip1 <id1 id2 id3 ...> ip2 <id1 id2 id3 ...>
Each agent ID in a record appears in the format <sysObjectID>/<MIB variable> where:
An example of an agent ID appears in the Known Agents file is shown below:
1.3.6.1.4.1.49.2.3.5/1.3.6.1.2.1.17.1.1.0
Nways Manager-LAN uses the list of agent IDs to discover:
To define an alias for an agent ID that you can use to modify the Known Agents file, do one of the following:
In the dialog box displayed, enter the agent ID in the format <sysObjectID>/<MIB variable> as described in the preceding section. In the Agent Identifier field, enter the alias to be used instead of the agent ID. You can also enter a text description of the alias.
To remove an alias that you defined for an agent ID, do one of the following:
To modify the Known Agents file, use the SMIT interface to add and remove IP addresses and agent IDs.
To add an IP address or an agent ID, do one of the following:
In the dialog box displayed, enter the IP address or the host name of the device. Then enter the agent ID supported by the device. To display the list of existing agent IDs, click the List button.
To remove an IP address or an agent ID, do one of the following:
When you edit the Known Agents file, follow these conventions:
To temporarily modify the agents that are discovered (if the discovery process is running), use the SMIT interface to find and delete an SNMP agent. The changes you make are only valid during the current Nways Manager-LAN session. When you stop and restart Nways Manager-LAN, only the information supplied by automatic and persistent discovery is used.
To find an SNMP agent, do one of the following:
To delete an SNMP agent, do one of the following:
The Known Agents File is not changed.
The Agents Filter file allows you to determine what agents are discovered by Nways Manager-LAN components. To create or modify the file, you use a standard ASCII text editor.
The Agents Filter file contains the ip_address_wildcard field. This field limits agent discovery according to the range of IP addresses you specify. Enter parameters in the same format as in NetView for AIX.
You can filter the discovery of agents for:
You cannot filter the discovery of agents when you use temporary discovery.
To determine if an agent is to be discovered, the discovery process checks the agents using information from:
Note that even if an agent is listed on more than one method to be discovered, Nways Manager-LAN only discovers and receives information from it once.
The conventions used for the Agents Filter file are as follows: