Device Manager Online Help

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.
• The switch cannot be reached through an IP address. The management station cannot communicate with 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?

• Setting the Device Manager properties
• Opening a device