3com 3C172221 用户手册
The SuperStack
®
3 Switch 4400 1000BASE-SX Module
(3C17221) provides your SuperStack 3 Switch 4400 with
one 850 nm Gigabit Ethernet fiber optic port.
one 850 nm Gigabit Ethernet fiber optic port.
The Module conforms to the full duplex implementation
of the Gigabit Ethernet standard, IEEE 802.3z, and
provides a 1000 Mbps connection to another
1000BASE-SX device. This port uses 62.5
of the Gigabit Ethernet standard, IEEE 802.3z, and
provides a 1000 Mbps connection to another
1000BASE-SX device. This port uses 62.5
µ
m or 50
µ
m
multimode fiber optic cable with MT-RJ duplex connectors
and supports the segment lengths specified in IEEE
802.3z, as shown below:
and supports the segment lengths specified in IEEE
802.3z, as shown below:
LEDs
You can gather information about the status of the
Module and its packet activity using the Expansion
Module port LEDs on the front of the Switch.
Module and its packet activity using the Expansion
Module port LEDs on the front of the Switch.
I
NTRODUCTION
Fiber Size
Fiber Bandwidth
at 850 nm
at 850 nm
Segment Lengths Supported
62.5
µ
m
160 MHz*km
200 MHz*km
2–220 m (7–722 ft)
2–275 m (7–902 ft)
50
µ
m
400 MHz*km
2–500 m (7–1805 ft)
500 MHz*km
2–550 m (7–1805 ft)
Module Packet LED
Color
Appearance
Indicates
Green
On
Full duplex activity being received or
transmitted.
transmitted.
No color
Off
No activity.
Module Status LED
Color
Appearance
Indicates
Green
On
The Module is installed and supported. The
Link Status has been determined.
Link Status has been determined.
Yellow
On
The Module is installed and supported. The
Link Status has not been determined or
there is no link for a single port Module.
Link Status has not been determined or
there is no link for a single port Module.
Yellow
Flashing
The Module is installed, however, it is not
supported.
supported.
No color
Off
The Module is not installed.
SuperStack
®
3 Switch 4400 1000BASE-SX Module (3C17221)
User Guide
DUA1722-1AAA01
Super
Stack 3 1000BASE-
SX M
odul
e
3C17221
This pr
oduct
com
plies wi
th DHHS Rul
e 21 CFR
Subchapt
er J, appl
icabl
e at
dat
e of
manuf
acture
3Com
Eur
ope Li
mited
This pr
oduct
com
plies wi
th DHHS Rul
e 21 CFR
Subchapt
er J, appl
icabl
e at
dat
e of
manuf
acture
3Com
Eur
ope Li
mited
CLASS1 L
ASER PRODUCT
1