Chapter 28: Upper Layer Troubleshooting; Snmp Troubleshooting - Avaya 8800 Troubleshooting Manual

Chapter 28: Upper layer troubleshooting

This section describes troubleshooting for Layer 4 to 7 applications.

SNMP troubleshooting

This section describes methods to troubleshoot the following Simple Network Management
Protocol (SNMP) scenario:
• network management station (NMS) not receiving traps
Verify your management configurations for your management station. Also verify your
management station setup. If you can reach a device but are not receiving traps, verify the
trap configurations (that is, the trap destination address and the traps to be sent).
For a flowchart SNMP recovery tree, see
Procedure steps
1. From the NMS, ping the switch. If you can ping, the IP address is valid and you may
2. Telnet to the switch.
3. If Telnet does not work, connect to the device console port using a serial line
4. If your management station is on a separate subnet, make sure that the gateway
5. Using a management application, perform an SNMP Get and an SNMP Set (that
6. If you cannot reach the device using SNMP, access the device's console and make
7. Get sniffer traces to verify that the switch received the poll.
8. Get sniffer trace to verify that the NMS gets the response.
9. Verify that the data in the response is the data that was requested.
Troubleshooting
have a problem with the SNMP setup.
If you cannot ping the switch, then there is a problem with either the path or the IP
address.
If you can Telnet, the switch IP address is correct.
connection and ensure that the device IP address setting is correct.
address and subnet mask are set correctly.
is, try to poll the device or change a configuration using management software).
sure that your SNMP community strings and traps are set correctly.
SNMP failure on page 337.
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