3Com SuperStack 3 4900 SX Getting Started Manual

Also see for 3C17702 - SuperStack 3 Switch 4900 SX: Datasheet Getting started guide Getting started guide

Managing the Switch 23Table 9 Problems with hardware*To Power Cycle the unit: Remove and reconnect the AC mains supply. If the unit has no ACmains supply, remove and reconnect the DC RPS supply.For Technical Support information, see Appendix D.Managing theSwitchYour Switch can operate in its default state. However, to make full use ofthe features offered by the Switch, and to change and monitor the way itworks, you have to access the management software that resides on theSwitch. This is known as managing the Switch.Managing the Switch can help you to improve the efficiency of theSwitch and therefore the overall performance of your network.There are several different methods of accessing the managementsoftware to manage a Switch. These methods are explained in Chapter 3Setting Up for Management.Problem Suggested SolutionAn expansion moduleis installed and theunit will not power upEnsure that the expansion module is fully seated in theslot and the connectors are engaged so that the securingscrews can be tightened.An SNMP fan fail trapis received1 Power off the unit.2 Check that the air vents are not obstructed.3 Power up the unit.4 If a further fan fail trap is received, return the unit.Unit fails, no SNMP fanfail trap is received1 Power cycle the unit.*2 Check the command line interface to determinewhether a thermal shutdown has occurred.3 If no, return the unit.If yes, check that: The air vents are not obstructed. The ambient temperature and environmentalconditions meet those specified in Appendix C.4 Power cycle the unit. If a further thermal shutdownoccurs, and all environmental conditions aresatisfactory, return the unit.17702ua.bk Page 23 Friday, April 6, 2001 3:31 PM