Choosing the Correct Cables 31If there is evidence of a problem, see “Solving Problems Indicated byLEDs” on page 32.Choosing theCorrect CablesAll of the ports on the front of the Switch 1100 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 11.Figure 11 Connecting other devices to the Switch 1100Table 4 LED colorsColor StateGreen The Switch is powered-up andoperating normallyYellow The Switch has failed its Power On SelfTest. This occurs if any of the ports failduring power-up.Off The Switch is not receiving power.16950ua.bk Page 31 Thursday, August 27, 1998 11:55 AM