3Com C17302, 3C17300, C17304 manual Solving Communication Problems, IP Addressing

Solving Hardware Problems 55

Solving Hardware SNMP fan fail trap hardware failure

Problems

In the rare event of your Switch unit experiencing an SNMP fan fail trap hardware failure, refer to the suggested solution below.

1Power off the unit.

2Check that the air vents are not obstructed.

3Power cycle the unit. To do this, remove and reconnect all power supplies.

4If a further fan fail trap is received, return the unit.

Error message indicating that the GBIC transceiver is invalid

The Switch has identified that the GBIC does not meet the minimum requirements for the Switch and has disabled the port. To correct this problem, completely remove the GBIC and replace it with a 3Com approved GBIC. See “Approved GBIC Transceivers”on page 27.

Error message indicating that the GBIC transceiver is faulty

To correct this problem, completely remove the GBIC and then reinsert it. If the problem persists, contact 3Com Technical Support.

Solving

Communication

Problems

If you experience communication problems with the Switch, ensure that:

■The Switch IP address has been configured as described in Chapter 3

■If the Switch is separated from your management application by a router, ensure that the default gateway IP address within the Switch is the same as the IP address of the router.

■The Switch’s IP address has been entered correctly in your network management application (such as 3Com Network Supervisor).

The following is a brief overview of IP addressing, and how to obtain a registered IP address.

IP Addressing

To be managed correctly, each device on your network (for example a Switch or Hub) must have a unique IP address. IP addresses have the format n.n.n.n where n is a decimal number between 0 and 255. An example IP address is 192.168.100.8.