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Troubleshooting

 

Test Connectivity

Verify the traffic data collector can reach and gather data from the routers with the Test Connectivity tool. Right-click on any router(s) in a Router Group and select Test Connectivity.Test Connectivity will run Ping, SNMP, and CLI tests on the router(s) for reachability, SNMP configuration, and CLI login access. If any of the tests fails, review the settings in the Properties panel or the Router Profile. Note that the Test Connectivity tool only works for a complete Router Group with an assigned traffic data collector.

Figure 1: Test Connectivity
Test Connectivity

Problems in the Traffic Collection Manager

Figure 2: Red Lettering: A Warning Sign
Red Lettering: A Warning Sign

In order for the traffic collector to return live updates, you must have first run a “Scheduling Live Network Collection” task from the Task Manager as described in Live Network Collection Overview before performing the traffic data collection. Without this step, many SNMP Errors may arise in the Collection Status window. If within a couple minutes, you do not see any Status “Normal” Traffic Collecting messages in the Collection Status window, please restart the application, check in the Task Manager that the Live Network Collection has been performed and try the data collection once again.

Once the Collection Elements and Collection Data have been set, either the Start button (the triangle icon on the toolbar) or the Stop button (the square button on the toolbar) should be enabled. If the Stop button is enabled, this means that the collection is already in progress. If neither button is enabled, check the following:

Red Lettering

Make sure that there is no red lettering in the Collection Elements panel. Red lettering indicates that some part of the user-supplied information is incomplete. For example, in Figure 126, the “Global Network” is in red lettering, indicating that at least one of the router groups has an incomplete setting. The router group named “WestGroup” is also in red lettering, indicating it has an incomplete setting. Traversing down the tree, notice that there is a router element in WestGroup also in red lettering “<unknown> - 129.1.1.1”.

  • Incomplete/Incorrect Router Entry- By clicking on a collection element in the left panel, you can see if there are any required properties that need to be set by examining the Properties panel on the right. An asterisk will precede the incomplete property name in the right-hand property table. In Figure 126, there is an asterisk besides “Router name”, corresponding to the “<unknown> - 129.1.1.1” entry. Clicking in the Value column and assigning a router name will cause the “<unknown>” entry to refresh and the red lettering disappears. However, “WestGroup” remains in red lettering, indicating there is still an incomplete setting. If there is still a red mark, check that the SNMP community string is correct, the router vendor is correct, and that the router is reachable via ping.

  • No Traffic Data Collector Assigned- The other reason that data collection is not ready to start is because no traffic data collector has yet been assigned to this router group, as is the case in Figure 126. Right click on the router group and set the appropriate collector. If Set Collector is grayed out, this means that no collectors have been started and you must start one, as described in Starting the Traffic Data Collector(s).

  • No Traffic Collection Interval Specified.- If the traffic collection interval is not set (or set to zero seconds), this will also cause “Global Network” to be displayed in red lettering. In the Collection Elements tab, left-click the mouse on the words “Global Network”. In the Properties panel on the right, an asterisk will precede the Property, “Traffic collection interval (s)” to indicate that a value is required before the collection can begin. It is recommended to specify a collection interval of some multiple of 300 seconds (5 minutes).

Collector with a Red “X”

A collector with a red “X” may indicate that the collector is not running. Click on the collector and the Properties pane at right will indicate whether it is running or not. If not, run the traffic data collector dc.sh as described in Starting the Traffic Data Collector(s).

Data and Elements Not Saved

Settings must be saved in order for the collection to begin. Make sure that in both the Collection Elements and Collection Data tab, the Save button (diskette icon on the toolbar) has been pressed. Make sure that at least one MIB collection variable has been selected into the right panel of the Collection Data tab.