3Com Switch SuperStack II User Manual

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of 64
 
30 C
HAPTER
2: I
NSTALLING
THE
S
WITCH
If there is evidence of a problem, see “Solving Problems Indicated by
LEDs” on page 31
.
Choosing the
Correct Cables
Fiber optic cables should be fitted with SC connectors.
Both the RJ45 ports on the front of the Switch are configured as MDIX
(cross-over). If you want to make a connection to another MDIX port, you
need a
cross-over
cable. Most of the 10BASE-T and 100BASE-TX ports on
3Com devices are MDIX-only. Many ports on workstations and servers are
configured as MDI (straight-through). If you want to make a connection
to an MDI port, you need to use a standard
straight-through
cable. This is
illustrated in Figure 10
.
Figure 10
Connecting other devices to the Switch 3300 FX
Table 4
LED colors
Color State
Green The Switch is powered-up and
operating normally
Yellow The Switch has failed its Power On Self
Test. This occurs if any of the ports fail
during power-up.
Off The Switch is not receiving power.
16982ug1.bk Page 30 Thursday, April 29, 1999 4:51 PM

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