User guide

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The SNMP Network Manager cannot access the device:
Check that the device IP address, subnet mask, and default router are correctly
configured, and that the device has been reset.
Check that the device IP address is correctly recorded by the SNMP Network Manager
(refer to the user documentation for the Network Manager).
Check that the community strings configured for the system and Network Manager are
the same.
Check that SNMP access was not disabled for the system.
The Telnet workstation cannot access the device:
Check that the device IP address, subnet mask and default router are correctly
configured, and that the device has been reset. Ensure that you enter the IP address of
the switch correctly when invoking the Telnet facility. Check that Telnet access was not
disabled for the switch. If you attempt to log in and the maximum number of Telnet
sessions are being used, you should receive an error message indicating so.
Traps are not received by the SNMP Network Manager:
Check that the SNMP Network Manager's IP address and community string are
correctly configured, and that the IP address of the Trap Receiver is configured properly
on the system.
The SNMP Network Manager or Telnet workstation can no longer access the device:
Check that Telnet access or SNMP access is enabled.
Check that the port through which you are trying to access the device has not been
disabled. If it is enabled, check the connections and network cabling at the port.
Check that the port through which you are trying to access the device is in a correctly
configured VLAN.
Try accessing the device through a different port. If you can now access the device, a
problem with the original port is indicated. Re-examine the connections and cabling.
A network problem may be preventing you accessing the device over the network. Try
accessing the device through the console port.