3Com 3C16987 Switch User Manual


 
Switch 3300 SM Front View Detail 13
Switch 3300 SM
Front View Detail
Figure 1
Switch 3300 SM front view
10BASE-T/
100BASE-TX Ports
The Switch has 24 auto-negotiating 10BASE-T/100BASE-TX ports
configured as MDIX (cross-over). These ports can be set to 10BASE-T half
duplex, 10BASE-T full duplex, 100BASE-TX half duplex, 100BASE-TX full
duplex, or they can automatically detect the speed and duplex mode of a
link and provide the appropriate connection. The maximum segment
length is 100m (328ft) over Category 5 twisted pair cable.
As these ports are configured as MDIX (cross-over), you need to use a
cross-over cable to connect to devices whose ports are MDIX-only. See
Choosing the Correct Cables
on
page 30
for more information.
1000BASE-SX Port
The Switch has a Gigabit Ethernet Port that provides a 1000Mbps
connection to another Gigabit Ethernet device. This port uses 62.5
µ
m or
50
µ
m multimode fiber optic cable with MT-RJ duplex connectors.
LEDs
Table 3
(overleaf) lists the LEDs visible on the front of the Switch, and
their states according to color. For information on using the LEDs for
problem solving, see Solving Problems Indicated by LEDs
on page 31.
green
flashing green
= enabled, link OK
= disabled, link OK
10BASE-T / 100BASE-TX
Unit
3
3
4
4
6
6
5
5
7
7
8
8
9
9
10
10
11
11
12
12
1
1
2
2
3
5
1
4
7
6
8
2
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
SuperStack II
Switch 3300SM
®
Power/Self Test
6x 7x
18x 19x
1x
13x
12x
24x
Packet
Status
Packet
Status
1000BASE-SX
10BASE-T / 100BASE-TX Ports
Port Status LEDs Power / Self Test LED
Unit LED
1000BASE-SX Port