3Com SUPERSTACK 4226T Getting Started Manual

Also see for 3C17304A: Implementation guide

Contents

Solving Hardware Problems 55Solving HardwareProblemsSNMP fan fail trap hardware failureIn the rare event of your Switch unit experiencing an SNMP fan fail traphardware failure, refer to the suggested solution below.1 Power off the unit.2 Check that the air vents are not obstructed.3 Power cycle the unit. To do this, remove and reconnect all power supplies.4 If a further fan fail trap is received, return the unit.Error message indicating that the GBIC transceiver is invalidThe Switch has identified that the GBIC does not meet the minimumrequirements for the Switch and has disabled the port. To correct thisproblem, completely remove the GBIC and replace it with a 3Comapproved GBIC. See “Approved GBIC Transceivers”on page 27.Error message indicating that the GBIC transceiver is faultyTo correct this problem, completely remove the GBIC and then reinsert it.If the problem persists, contact 3Com Technical Support.SolvingCommunicationProblemsIf 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 arouter, ensure that the default gateway IP address within the Switch isthe same as the IP address of the router.■ The Switch’s IP address has been entered correctly in your networkmanagement application (such as 3Com Network Supervisor).The following is a brief overview of IP addressing, and how to obtain aregistered IP address.IP AddressingTo be managed correctly, each device on your network (for example aSwitch or Hub) must have a unique IP address. IP addresses have theformat n.n.n.n where n is a decimal number between 0 and 255. Anexample IP address is 192.168.100.8.DUA1730-0AAA04.book Page 55 Thursday, November 17, 2005 2:59 PM