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3com 3800 Manual Do Utilizador

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1-8
C
HAPTER
 1: S
WITCH
 3800 O
VERVIEW
For more information on 1000BASE-SX and 1000BASE-LX 
characteristics refer to IEEE Draft P802.3z/D4.2 Tables 38-2 and 38-6.
LEDs
Table 1-1   Media Types and Distances
Standard
Media Type
Mhz/Km Rating
Maximum Distance
10BASE-T
Category 3 UTP Cable (10Mbps)
100 Meters
100BASE-TX
Category 5 UTP Cable (100Mbps)
100 Meters
1000BASE-SX
(850 nm)
62.5/125 um Multimode fiber 
62.5/125 um Multimode fiber 
50/125 um Multimode fiber 
50/125 um Multimode fiber
160
200
400
500
220 Meters
275 Meters
500 Meters
550 Meters
1000BASE-LX
(1300 nm)
62.5/125 um Multimode fiber
50/125 um Multimode fiber
50/125 um Multimode 
10u Single-mode fiber
500
400
500
NA
550 Meters
550 Meters
550 Meters
5,000 Meters
Table 1-2   Switch 3800 LEDs 
LED
Color
Indicates
10/100Mbps Port Status LEDs
Green
Yellow
Green flashing
Off
Link is present; port is enabled.
Frames are being transmitted/received on this 
port.
Link is present; port is disabled.
Link is not present.
Gigabit Ethernet Port Status LEDs
Packet
Yellow
Off
Frames are being transmitted/received on this 
port.
No activity on this port.
Status
Green
Green flashing
Off
Link is present; port is enabled; full-duplex 
operation.
Link is present; port is disabled.
Link is not present.
(continued)
SW3800.BK  Page 8  Tuesday, May 5, 1998  5:20 PM