Using its LNM OS/2 Agent application to communicate with the LNM OS/2 agent in the token-ring environment, the LAN Network Manager program monitors activity on the LAN segments to which its agents are attached and on remote LAN segments connected by bridges. This chapter describes how to monitor and manage the segments in your network.
It contains the following topics:
Monitor and manage the individual resources that make up a specific segment on the Segment submap. The Segment submap displays stations, bridges, and concentrators in nearest active upstream neighbor (NAUN) order, according to their adapters. To display a Segment submap, double-click on the icon of the segment.
The Segment submap displays a graphical representation of the stations that are attached to the selected segment, including their statuses. These stations can represent workstation adapters, concentrators, and bridges.
To open a view of the ports of a particular bridge, double-click on the bridge icon.
Open a view of the ports and modules of a particular 8230 concentrator by double-clicking on the concentrator.
The color of a resource indicates the status of that resource. A change in the color of a resource indicates a corresponding change in status. For an explanation of the colors and their corresponding statuses, refer to the online book User Interface.
To display information about a segment, use the Segment Profile window. You can also display additional information or perform actions on the segment by using the pull-down menus on the window.
To display the Segment Profile window, select the segment for which you want profile information, then select Profile from either the LAN pull-down menu or the context menu.
You can select the following actions from the Actions pull-down menu on the
Segment Profile window:
| For information about: | Read: |
|---|---|
| Resync | Resynchronizing a Segment |
To navigate directly to the following segment windows, select one of the
following choices from the Navigation pull-down menu on the Segment Profile
window:
| Select: | To navigate to: |
|---|---|
| Fault | Segment Fault window |
| Performance | Segment Performance window |
The resynchronization function maintains an accurate network configuration by querying each adapter, updating the OS/2 agent configuration and location tables with current information, and by refreshing the Segment submap.
To override the interval set in the Resync time field on the Configuration Monitoring Parameters window and to request an immediate resynchronization of the OS/2 agent's configuration table and the location table, follow these steps:
LAN Network Manager displays a message that explains whether the resynchronization was successful.
If the resynchronization is successful, the Segment submap is refreshed.
Resynchronizing a segment resets the status of congested adapters to normal. When you select Resync, any adapters that show a marginal status (yellow) are reset to normal status (green) after the segment is successfully resynchronized.
The Segment Fault window provides data about segments that are experiencing soft errors. Soft errors are intermittent network errors that cause data to be transmitted more than once. Soft errors can have an effect on network performance.
If the segment that you selected is experiencing soft errors, the Segment Fault window displays the adapters that are experiencing the soft errors.
The Segment Fault window contains a list box that displays the first 10 adapters encountered that are experiencing soft errors on that segment at the time of the request. The list box shows the address of the adapter which is experiencing soft errors, the address of its nearest active upstream neighbor (NAUN), and the error count for the affected adapter. One asterisk (*) next to the error count value indicates that an adapter is in a pre-weight-exceeded condition; two asterisks (**) next to the error count value indicate that an adapter is in a weight-exceeded condition.
To display the Segment Fault window, select the segment for which you want fault information, select Fault from either the LAN pull-down menu or the context menu.
To navigate directly to the following segment windows, select one of the
following choices from the Navigation pull-down menu on the Segment Fault
window:
| Select: | To navigate to: |
|---|---|
| Profile | Segment Profile window |
| Performance | Segment Performance window |
LAN Network Manager can gather and display segment performance data for each LLC token-ring segment in the network. The Segment Performance window enables you to display performance information for the segment and to activate data collection for the selected segment.
You can also display segment utilization information for a selected segment on the Segment Performance window. Segment utilization is the percentage of the total data-transmission capacity of the segment that is being used. To display segment utilization information, there must be a station on the segment that is currently managed by an OS/2 agent and has:
To display the performance information for a segment, select the segment for which you want to display performance information, then select Performance from either the LAN pull-down menu or the context menu.
The data collection fields on the Segment Performance window indicate how often segment performance data is collected, and the time period in which the collection takes place. Change the values of these fields on the Segment Parameters window. For more information about the Segment Parameters window, see Defining Segment Parameters.
Start or stop the collection of segment performance data by changing the value of the Collecting field on the Segment Performance window.
If you want to display the segment performance data graphically, select the Graph History push button.
To navigate directly to the following segment windows, select one of the
following choices from the Navigation pull-down menu on the Segment
Performance window:
| Select: | To navigate to: |
|---|---|
| Profile | Segment Profile window |
| Fault | Segment Fault window |
The performance data that is collected by LAN Network Manager is saved to a file.If you want to work with this data in a spreadsheet program, you can convert the history.01 files to a spreadsheet-readable delimited format using the lnmexport utility.
To use the lnmexport utility to export segment performance data, enter the following command from an AIX operating system shell:
lnmexport ip_address seg segment_number week_data > output_file
where:
The lnmexport utility converts the segment performance data stored in the /usr/CML/reports/lnmlnmemon/dir_name directory, where dir_name is a directory named with the IP address of the OS/2 agent. The converted data is placed in the file you specified with the lnmexport command, and stored in the same directory, or a directory you specify with the redirect symbol (>).
The format of the data is:
Segment_number 0 Time Utilization
where:
The lnmexport utility converts the data to the following spreadsheet delimited format:
Segment_number Delta_time Utilization
where:
As an example, suppose you want to convert the current week's segment performance information for a segment named 005 so you can work with the information in a spreadsheet program. Segment 005 is managed by an OS/2 agent with an IP address of 9.67.187.11. You want to put the converted information in a file called seg005.wks.
You would enter the lnmexport command as follows:
lnmexport 9.67.187.11 seg 005 01 > seg005.wks
This command converts the data to the following:
history data file output file (seg005.wks) · 5 0 732040000 15.00 5, 0, 15.00 5 0 732040030 25.00 5, 30, 25.00 5 0 732040060 35.00 5, 30, 35.00 5 0 732040090 45.00 5, 30, 45.00 5 0 732040120 55.00 5, 30, 55.00
To transfer the seg005.wks file to a DOS or OS/2 diskette, use the following AIX DOSWRITE command:
doswrite -a seg005.wks seg005.wks
This command transfers the file to a DOS or OS/2 diskette in the diskette drive of your AIX workstation. You can then work with the file using the spreadsheet program.