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Chapter 1: Overview
20
AT-8550GB The AT-8550GB switch has 48 10/100Base-TX twisted pair ports, capable
of operating at either 10 or 100 Mbps, with RJ-45 connectors. These ports
have a maximum operating distance of 100 meters (328 feet) using
Category 3 or better 100 ohm twisted pair cable for 10Base-T operation
and Category 5 or 5E 100 ohm twisted pair cable for 100Base-TX
operation.
The switch has two 10/100/1000Base-T twisted pair ports, labelled Ports
49R and 50R. They have RJ-45 connectors, require Category 5 or 5E 100
ohm twisted pair cable, and have a maximum operating distance of 100
meters (328 feet).
The switch also has two slots for two Gigabit Interface Converters
(GBICs). You can use the GBICs to add 1000Base-X fiber optic ports to
the switch to extend the distance of your network. For a list of GBICs
supported by the switch, contact your Allied Telesis sales representative
or refer to the Allied Telesis web site: www.alliedtelesis.com.
Note
The twisted pair ports 49R and 50R change to a redundant status
when GBICs are installed and establish links with their end nodes. A
link on a GBIC port always takes precedence over that of the
corresponding 10/100/1000Base-T twisted pair port.
Figure 4 shows the front and back panels of the AT-8550GB switch.
Figure 4. AT-8550GB Switch Front and Back Panels
COL
SPD
FDX
ACT
FLT
RPS
MSTR
PWR
STATUS
AT-8550GB
Fast Ethernet Switch
LINK
LINK
LINK
MAIN PORTS
13579
11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48
MODELINK 49R
49
50
GBIC
UPLINK PORTS
CLASS 1
LASER PRODUCT
MODE
MODELINK 50R
10/100Base-TX Ports
Port LEDs
10/100/1000Base-T Ports
GBIC Slots
100-240VAC
~
RPS INPUT
RS-232
Terminal Port
AC Power Connector
RPS Connector
LED Mode
Select Button
System
LEDs