Allied-telesis SwitchBlade 4000 Series Switch Hardware Reference Manual de usuario Pagina 17

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Hardware Reference 17
C613-03060-00 REV H
Expansion Bays
Two switch controller bays
Eight line card bays
Three power supply bays
One fan tray bay (compatible with the AT-SB4152 fan tray)
Alarm Relays
Two relays (Major and Minor) each located on the rear panel
Normally open and normally closed contacts
Software configurable for a range of environmental and operational
events
Suitable for use with DC alarm circuits (12 V DC 1.0 A or 48 V DC 0.5 A)
See “Alarm Relays and Monitoring” on page 32 for more information
Backplane Links and Bus Connections
A SwitchBlade chassis contains two controller bays each capable of
housing a switch controller card. See “Switching Performance and
Characteristics” on page 10 for more information.
33MHz 64 bit PCI routing and control bus links are present on all switch
controller and line card bays. This bus provides a high performance
communication channel between switch controller CPUs, and also
allows high speed routing between line cards that have WAN interfaces
Cable Management System
Optional manager can be fitted to the fan tray front panel
Cable manager supports up to four cable-management loops
Earth/Ground Point
An earth/ground point is provided on the chassis’s rear panel. This
point can be used to bond the chassis to earth/ground. Even if this point
is used, earth/ground leads of AC and DC power supplies must still be
connected
AT-SB4104 SwitchBlade 4 Slot Chassis
Dimensions
Height: 400 mm 9U rack occupancy
Width: 440 mm (excluding rack-mounting brackets). Suitable for 19
inch rack
Depth: 345 mm
Chassis 4 (AC) weight: 13 kg (empty chassis)
Chassis 4 (DC) weight: 13 kg (empty chassis)
Chassis 4 loaded weight: 23 kg to 45 kg (depending on the
configuration)
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