3Com 610 User Manual

3Com 610 User Manual Manual pdf 25 page image

Choosing the Correct Cables 25Choosing theCorrect CablesAll of the ports on the front of the Switch 610 are configured as MDIX(cross-over). If you want to make a connection to another MDIX port, youneed a cross-over cable. Most of the 10BASE-T and 100BASE-TX ports on3Com devices are MDIX-only. Many ports on workstations and servers areconfigured as MDI (straight-through). If you want to make a connectionto an MDI port, you need to use a standard straight-through cable. This isillustrated in Figure 8.Figure 8 Connecting other devices to the Switch 610Solving ProblemsIndicated by LEDsIf the LEDs on the Switch indicate a problem, refer to Table 5 whichcontains a list of possible problems and suggested solutions.Table 5 Problems indicated by LEDsProblem Suggested SolutionA Power LED does notlightCheck that the power cable is firmly connected to therelevant Switch unit and to the supply outlet. If theconnection is secure and there is still no power, you mayhave a faulty power cord.On powering-up, thePower/Self Test LEDlights yellow and aUnit LED lights greenThe relevant Switch unit has failed its Power On Self Test(POST) because of an internal problem. Contact yoursupplier for advice.