3Com 4200G Series, Руководство по началу работы, Страница: 16 / 90

16 C
HAPTER
1: I
NTRODUCING THE
S
WITCH
4200G F
AMILY
Figure 3 Switch 4200G 48-Port—front view
WARNING: RJ-45 Ports. These are shielded RJ-45 data sockets. They cannot
be used as standard traditional telephone sockets, or to connect the unit to a
traditional PBX or public telephone network. Only connect RJ-45 data
connectors, network telephony systems, or network telephones to these
sockets.
You can connect either shielded or unshielded data cables with shielded
or unshielded jacks to these data sockets.
10/100/1000BASE-T
Ports
The Switch 4200G provides 12, 24, or 48 auto-negotiating
10BASE-T/100BASE-TX ports configured as Auto MDIX (crossover). When
auto-negotiation is enabled these ports automatically operate in MDI or
MDIX mode as needed. These ports provide 10/100/1000 Mbps
full-duplex connections to other Gigabit Ethernet devices. Full-duplex
connections allow packets to be transmitted and received simultaneously,
which effectively doubles a link’s potential throughput.
These ports require either straight-through or cross-over Category 5
cables with RJ-45 connectors at each end. The maximum UTP cable
length is 100 m (328 ft) over Category 5 cable.
The 10/100/1000BASE-T ports auto-negotiate the appropriate speed.
Unit St a tus
Displ a y
C onsole Port
Mode
LED
10G b ps
Interf ac e Slot
LEDs
10/100/1000BASE-T Ports
Port St a tus LEDs
Gig ab it SFP
Ports
Power
LED
PWR
MOD1
Mode
Green=Speed
Yellow=Duplex
Duplex:Green = Full Duplex, Yellow = H a lf Duplex Speed:Green = 100M b ps, Yellow = 10M b ps
Power:Green = Deliverng Power. Yellow=F a ult, Fl a shing Green=Over Budget
49 50 51/49 52/50
Mode
Swit c h
MOD1
10014914_AB_Switch 4200G.book Page 16 Tuesday, October 2, 2007 12:13 PM