Connecting A Network Device - 3Com 3C16476BS-US - Baseline 2250 Plus Switch User Manual

Color State
Yellow Power-on self-test or loopback test failed.
This can happen if a ports or ports fail
when the Switch was powered on.
Off The unit is not receiving power:
Verify that the power cord is connected
■
correctly, and then try powering on the
Switch again
If the Switch still does not operate, con-
■
tact your 3Com network supplier
If POST fails, try the following:
Power off the Switch, and then power it on again.
■
Check the Power LED and see if POST was success-
fully completed.
Reset the Switch. See "Resetting to Factory
■
Defaults" on page 43.
CAUTION: Resetting the Switch to its factory defaults
erases all your settings. You will need to reconfigure
the Switch after you reset it.
If these do not resolve the issue:
Check the 3Com Knowledgebase for a solution. To
■
visit the 3Com Knowledgebase Web site, start your
Web browser, and then enter
http://knowledgebase.3com.com
Contact your 3Com network supplier for assis-
■
tance.
.

Connecting a Network Device

Connecting a Network Device
To connect a network device to the Switch, use Cate-
gory 5 unshielded or shielded (screened) 100 Ohm TP
cables (or Category 3 cables for 10 Mbps connec-
tions).
For optimal connections, ensure that the cable length
for each connection is not longer than 100 m (328 ft).
Figure 3 Connecting Devices to the Switch
Baseline 10/100 switch
Baseline 10/100 switch
Baseline Switch 2250 Plus
1000 Mbps link
10 or 100 Mbps link
To connect a device to the Switch:
Connect one end of the cable to an RJ-45 port on the
1
Switch.
Connect the other end to the appropriate RJ-45 port
2
on the connecting device.
For 1000BASE-T operation, 3Com recommends using
Category 5e or 6 cables.
17
Endstations on switched
100 Mbps connections
Endstations on switched
100 Mbps connections
1000 Mbps copper
or fiber connection
to backbone or
server/workstation
Endstations
on switched
10 or 100 Mbps
connection
Server on switched
1000 Mbps
connection