Allied Telesis SwitchBlade 4000 Series Switch Hardware Reference - Manual (Page 19)

Hardware Reference 19
C613-03060-00 REV H
Mounting System
• 19 inch rack mounting
• Front rack-mounting brackets incorporated in chassis. Mid or rear
mounting brackets optional
Expansion Bays
• Two switch controller bays
• Four line card bays
• Two power supply bays
• One fan tray bay (compatible with the AT-SB4151 fan tray)
Alarm Relays
• Two relays on rear panel
• Normally open and normally closed contacts
• Software configurable for a range of conditions
• 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.
• 33 MHz 64 bit PCI routing and control bus links 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.
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-SB4161 & 2 SwitchBlade Power Supply Units
For guidelines on how many PSUs are required for a particular configuration,
see “How Many PSUs do You Need?” on page 33.
LEDs
• Three LEDs indicate power supply status (input, output, and fan status)
• For a complete list of LEDs and their functions, see “LEDs and What
They Mean” on page 47
Power Supply Specifications
Weight
• 3.6 kg