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3Com SUPERSTACK 3 3226 User Manual

3Com SUPERSTACK 3 3226
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24 CHAPTER 2: INSTALLING THE SWITCH
CAUTION The Switch has no ON/OFF switch; the only method of
connecting or disconnecting mains power is by connecting or
disconnecting the power cord.
Connecting a
Redundant Power
System
You can connect a SuperStack 3 Advanced Redundant Power System to
the Switch. This unit, which is also known as an RPS, is designed to
maintain the power to your Switch if a power supply failure occurs.
For normal redundancy, the unit requires one Type 3 Power Module (part
number 3C16075).
For full redundancy, the unit requires two Type 3 Power Modules
combined using a Type 3 Y-Cable (part number 3C16077).
WARNING: If you are connecting the Switch to a Type 3 Power Module,
read the Safety Information section in the Type 3 Power Module User
Guide.
CAUTION: The Switch can only use a SuperStack Advanced Redundant
Power System output.
CAUTION: The Switch has no ON/OFF switch; the only method of
connecting or disconnecting mains power is by connecting or
disconnecting the power cord.
Choosing the Correct
Cables
All of the ports on the Switch are Auto-MDIX, that is they have a
cross-over capability. The port can automatically detect whether it needs
to operate in MDI or MDIX mode. Therefore you can make a connection
to a port with a straight-through (MDI) or a cross-over cable (MDIX).
The Auto-MDIX feature only operates when auto-negotiation is enabled.
If auto-negotiation is disabled, all the Switch ports are configured as
MDIX (cross-over). If you want to make a connection to another MDIX
port, you need a cross-over cable. Many ports on workstations and
servers are configured as MDI (straight-through). If you want to make a
connection to an MDI port, you need to use a standard straight-through
cable. See Table 7.
3Com recommends that you use Category 5 twisted pair cable — the
maximum segment length for this type of cable is 100 m (328 ft).
DUA1750-0AAA01.book Page 24 Friday, December 5, 2003 10:24 AM

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3Com SUPERSTACK 3 3226 Specifications

SuperStack 3 Switch 3226

Port Capacities IconPort Capacities
10/100 ports24
Dual-personality 10/100/1000 or SFP Gigabit ports2
Performance IconPerformance
bandwidth8.8 Gbps
throughput6.6 Mpps
Power Supply IconPower Supply
input voltage100-240 VAC
maximum power55 W
heat dissipation184 BTU
Memory IconMemory
flash memory16MB
processor memory32MB
packet buffer memory32MB
Operating Environment IconOperating Environment
operating temperature0° to 40°C
storage temperature-40° to 70°C
humidity10% to 90% non-condensing
Weight and Dimensions IconWeight and Dimensions
height45 mm
width440 mm
depth252 mm
weight4.3 kg

SuperStack 3 Switch 3250

Port Capacities IconPort Capacities
10/100 ports48
Dual-personality 10/100/1000 or SFP Gigabit ports2
Performance IconPerformance
bandwidth13.6 Gbps
throughput10.1 Mpps
Power Supply IconPower Supply
input voltage100-240 VAC
maximum power84 W
heat dissipation287 BTU
Memory IconMemory
flash memory16MB
processor memory32MB
packet buffer memory64MB
Operating Environment IconOperating Environment
operating temperature0° to 40°C
storage temperature-40° to 70°C
humidity10% to 90% non-condensing
Weight and Dimensions IconWeight and Dimensions
height45 mm
width440 mm
depth333 mm
weight5.3 kg

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