Difficulty Opening a Switch in Device Manager

If a switch does not open, Device Manager displays a timeout message. Timeouts can occur in slower networks and indicate that you need to increase your retransmission retries and timeout interval.

However, a timeout message also is issued in either of the following circumstances:

• The correct read and write community information is not entered. For information about community strings, refer to Default Access Community Strings .

• The switch cannot be reached via IP. The management station cannot “talk” to the switch. Check the following possibilities:
  • Is the switch connected to the network?

  • Is the switch turned on?

  • Does the switch have an incorrect IP address?

  • Is the incorrect IP address specified in the Open Device field in Device Manager?

  • Is the network misconfigured?