Service manual

2
Installation Tasks
2-7
Installation Tasks
a. To connect the top and middle stacked hubs, connect an RJ-45
patch cable to port 24 of the top hub, then connect the cable to
port 12 of the middle hub.
b. To connect the bottom and middle stacked hubs, connect a
second RJ-45 patch cable to port 24 ofthemiddlehub,then
connect the cable to port 12 of the bottom hub.
c. As shown in use a pointed instrument to set the
medium-dependent interface (MDI) switch on the top and
middle hubs to MDI (in) (Figure 2-1, 1 and 2). Set the MDI
switch on the bottom hub to MDIX (out) (Figure 2-1, 3).
NOTE: To connect two hubs, follow step b and step c (middle and
bottom hub) instructions.
4. Connect a power cord to an AC power strip and the receptacle at
the rear of each hub. Use an extension cord if required.
5. Connectthe AC powerstripto facilitypower. Powerfor each hub
switches on when the strip is connected to facility AC power.
6. Inspect the front panel of each hub. Ensure each green Power
light-emitting diode (LED) illuminates.
Figure 2-1 Patch Cable and MDI Selector Configuration