Troubleshoot a Failed MIB Walk Channel Test

The MIB Walk Channel test checks for library initialization, network connectivity, proper SNMP client settings, and correct library firmware.

If this test fails, one or more of the following issues could be the cause:

• STA is not configured.
• The library is not initialized.
• The library firmware does not meet the minimum for STA.
• There are network problems between the STA server and library.
• A static IP address is not assigned to the STA server or library.
• SNMP is not enabled on the library.
• SNMP client settings do not match between STA server and library.

Steps to Perform on the Library

1. Log in to the library CLI.
2. Verify that the library is fully initialized and not super busy. See Verify the Library is Operational.
3. Check communication from the library to the STA server. This command is not available on the SL150.

   • SL8500 and SL3000:

     traceRoute <IP address of STA server public port>

   • SL500:

     traceroute <IP address of STA server public port>

   The output shows the number of hops and the round-trip time to reach each one. The round-trip time (the last line in the command output) should be less than one second. If it is not, confirm the network's performance with your network administrator.

4. Verify that SNMP has been enabled on the public port. See Enable SNMP on the Library.

5. Verify that the SNMP v3 user was added correctly:

   • On SL500, SL3000, and SL8500 libraries, use the snmp listUsers command to view a list of SNMP users. On SL150 libraries, in the navigation tree, select SNMP, then select SNMP Trap Recipients.

   • To add an SNMP v3 user, see Create an SNMP v3 User.

6. Verify that a static IP address has been assigned to the library. See Retrieve the Library IP Address.

7. After performing all other steps on both the library and STA server, consider deleting and re-adding the SNMP v3 user.

Steps to Perform on the STA Server

1. Log in to the STA server.

2. Verify that the STA server is using a static IP address.

3. Check communication from the STA server to the library.

   # traceroute -I <IP address of library public port>
   

   The output shows the number of hops and the round-trip time to reach each one. The round-trip time (the last line in the command output) should be less than one second. If it is not, confirm the network's performance with your network administrator.

4. To verify that the STA server can reach the library public port, ping the primary library IP address and, if applicable, the secondary IP address.

5. Verify that UDP ports 161 and 162 are enabled on all network nodes between the STA server and the library. See Verify SNMP Communication with a Library (optional) for instructions.

6. Verify that the settings on the STA SNMP Client Attributes screen exactly match the corresponding settings for the SNMP v3 user and trap recipient on the library. See Configure SNMP Client Attributes for STA for instructions.

7. Verify that the settings on the STA Monitored Libraries screen are correct for the library. See Configure the SNMP Connection to a Library for instructions.