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In-Depth Techniques to Identify and Solve Stubborn SNMP Problems

When the previous steps in this guide do not lead you to a solution, the following in-depth techniques can help you identify and solve tricky SNMP problems.

Use a network diagnostic utility to examine the paths of your SNMP traps

If your SNMP traps are not traveling over your network from SNMP agent to master, you need to pinpoint the location of the problem in order to solve it. The following utilities can help you to do this:

Trap Manager Screen

TrapManager (for v1 traps from DPS remotes)

DPS Telecom produces TrapManager, an efficient utility for analyzing SNMP v1 traps from DPS remotes on your network. Unlike less focused tools, this small software tool is one of the quickest methods to diagnose SNMP transport problems.

You may download TrapManager at no cost from DPS

To identify a transport issue on your network, you should run the following test on PCs in two specific network locations:
-First, as close to your manager as possible
-Second, as close to your DPS RTU as possible

Test Procedure:
•Install TrapManager on an appropriately located PC
•Configure your DPS SNMP remote to send v1 traps to Port162 of your PC running TrapManager
•Create an event that will send a trap
•Watch TrapManager on your PC to see if traps appear

If traps appear on the PC located near your SNMP manager, then traps are being sent from your RTU and traveling through your network to the location of your manager. In this case, the problem is almost always with your manager configuration. Check the settings of your SNMP manager.

If traps appear only on the PC located near your DPS RTU, then traps are being sent from your RTU and are being obstructed on the way through your network. Check for firewall issues and other network problems.

If traps do not appear on either PC, then your SNMP remote is not properly sending traps. If your remote supports debug mode, you may use it to confirm this issue (details on page 13). Check the configuration of your SNMP RTU and adjust accordingly.

When you have finished this testing procedure, remember to return your device to its original configuration: reporting
to the IP address of the primary manager.

Let DPS Help You Survey Your Network

Rick Dodd
Rick Dodd
Director of Sales
DPS Telecom

A Free Consultation at No Obligation to You Determining your alarm monitoring needs can be tough. If you've got a busy job with a lot of responsibilities, you don't have a lot of time to evaluate alarm systems and survey your remote sites.

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