Choosing the Correct Cables 33
If there is evidence of a problem, see “Solving Problems Indicated by
LEDs” on page 34.
Choosing the
Correct Cables
All of the ports on the front of the Switch 3300 XM, SM, TM and MM 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 14.
Figure 14
Connecting other devices to the Switch
Ta bl e 5
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.
1697ua.bk Page 33 Monday, December 3, 2001 11:31 AM
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