Check the configuration against the SNMP Trap Reference Guide. The trap configuration has the following format:

<trapreceiver ipaddress="111.222.333.444" udpport="162"/>

Optionally, the same line can be added to a lab system configuration file (common_config.txt), which can be validated for errors.

1. Log in as a TextPass user.

2. Move to the configuration directory:

   $ cd /usr/TextPass/etc/

3. Create a backup of the configuration file:

   $ cp -p common_config.txt common_config.txt_YYYYMMDD

4. Edit the configuration file:

   $ vi common_config.txt

5. Add the line below towards the end of the configuration file, before the </tpconfig> tag and save the file:

   <trapreceiver ipaddress="111.222.333.444" udpport="162"/>

6. Validate the changes you have made. There should be no output, which means there are no errors in the configuration:

   $ tp_config --validatecommonconfig common_config.txt

7. Connect to the VPN and verify the same configuration from all the nodes identified by the end-user. The sample below is from an LGP node.

• Log in as a TextPass user and run the following command:

  $ tp_walk -l alarmStationTable

  Sample output:

  alarmStationIndex.1 = Gauge32: 1 alarmStationIndex.2 = Gauge32: 2 alarmStationIndex.3 = Gauge32: 3 alarmStationIpAddress.1 = STRING: "127.0.0.1" alarmStationIpAddress.2 = STRING: "127.0.0.1" alarmStationIpAddress.3 = STRING: "111.222.333.444" alarmStationUdpPort.1 = Gauge32: 11173 alarmStationUdpPort.2 = Gauge32: 11173 alarmStationUdpPort.3 = Gauge32: 162

After verifying that the node has been configured correctly, check the connectivity (the end-user should also confirm end-to-end connectivity). Log in as a TextPass user and execute the following command:

 $ ping 111.222.333.444

After verifying the node's configuration and connectivity, you can now conduct a trace on the port, which will simulate a trap in the node. This step will allow you to see what is happening with the traps.

If the node does not generate actual traffic (like an LGP), restarting tp_fclient will not affect the service.

Note: All processes that need to be restarted require the customer's permission.

Example (for an LGP):

1. Open three SSH connections to the LGP node:

1. In the first connection, log in as a root user and only type the tcpdump command below, where <path> refers to a directory with enough space:

   tcpdump -i any -s 0 -w /<path>/<filename>.pcap port 162

   Important: Please DO NOT run the code yet.

2. In the second connection, log in as a root user and use the tail command on the syslog, which will allow you to monitor the trap that will be generated:

   tail -f /var/log/messages

3. In the third connection, log in as a TextPass user and note/copy the following command to restart tp_fclient :

   tp_stop --tp_fclient; tp_start --tp_fclient

   Important: Please DO NOT run the code yet.

2. Run the trace provided in step 1a, and immediately run the tp_fclient restart command in step 1c.

3. Monitor the connection using the command in step 1b. If a trap appears, stop the trace in the running connection (from step 1a) by pressing Ctrl + C on your keyboard. Stop the trace when the tp_fclient is up and running.

4. To check the tp_fclient status, run the command below as a TextPass user:

   tp_status --tp_fclient

5. Collect the trace and analyze if the node is sending the traps to the configured IP address and port. Examine what happens to the trap that was sent.