3Com 3CB9E7 Getting Started Guide - Page 15

Switch Backplane Architecture, Backplane Connector Architecture

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Switch Backplane Architecture 15 s In-Band and Out-of-Band Download - The EME provides both in-band and out-of-band downloads. In-band download uses TFTP (Trivial File Transfer Protocol) through a network connection. Out-of-band download uses XMODEM software and the RS-232 serial port on the front panel of the EME. The EME allows you to download to multiple modules using a single command. s Web Management Support - You can monitor and manage the EME through the CoreBuilder 9000 Web Management suite of applications. s Transcend Network Control Services Support - You can also monitor and manage the EME through the 3Com Transcend Network Control Services. Switch Backplane Architecture The backplane of the CoreBuilder 9000 7-slot Enterprise Switch incorporates 60 Gbps of bandwidth switching capacity. The backplane uses a dual, star-wired interconnect scheme to connect each payload slot to the switch fabric module. The backplane of the CoreBuilder 9000 7-slot Enterprise Switch is constructed from a non-blocking, passive, and redundant design. Five of these links (5 traces, each 2 Gbps) are star-wired to the slot for the switch fabric module, providing five primary high-speed links for each interface module. The backplane: s Supports one slot for a switch fabric module. s Supports automatic configuration detection. s Provides central clock distribution. Backplane Connector Architecture The backplane connector provides easy access to all the services from the CoreBuilder 9000, including two 10-Mbps MLAN (Management LAN) channels, one UART channel, a number of system clocks, and the SCI (Serial Communication Interface) communications channel. The backplane connector consists of the: s Common signals bus - The common signals bus consists of all the signals that are used for system-wide functions. These include power supply monitoring and control, backplane reset, system clock signals, and an LED test signal. s Power delivery - The power delivery connector provides the following voltage: +2.1V, +3.5V, +5.2V, and +12V. s System communications channels - The management system uses two types of busses to communicate with other modules in the Switch: s Serial Communication Interface (SCI) - The SCI bus serves as a communications path between management modules.

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Switch Backplane Architecture
15
■
In-Band and Out-of-Band Download
— The
EME provides both in-band and out-of-band
downloads. In-band download uses TFTP (Trivial
File Transfer Protocol) through a network
connection. Out-of-band download uses
XMODEM software and the RS-232 serial port on
the front panel of the EME. The EME allows you to
download to multiple modules using a single
command.
■
Web Management Support
— You can monitor
and manage the EME through the
CoreBuilder 9000 Web Management suite of
applications.
■
Transcend Network Control Services
Support
— You can also monitor and manage the
EME through the 3Com Transcend Network
Control Services.
Switch Backplane Architecture
The backplane of the CoreBuilder 9000 7-slot
Enterprise Switch incorporates 60 Gbps of bandwidth
switching capacity. The backplane uses a dual,
star-wired interconnect scheme to connect each
payload slot to the switch fabric module.
The backplane of the CoreBuilder 9000 7-slot
Enterprise Switch is constructed from a non-blocking,
passive, and redundant design.
Five of these links (5 traces, each 2 Gbps) are
star-wired to the slot for the switch fabric module,
providing five primary high-speed links for each
interface module.
The backplane:
■
Supports one slot for a switch fabric module.
■
Supports automatic configuration detection.
■
Provides central clock distribution.
Backplane Connector Architecture
The backplane connector provides easy access to all
the services from the CoreBuilder 9000, including two
10-Mbps MLAN (Management LAN) channels, one
UART channel, a number of system clocks, and the
SCI (Serial Communication Interface) communications
channel.
The backplane connector consists of the:
■
Common signals bus
— The common signals bus
consists of all the signals that are used for
system-wide functions. These include power
supply monitoring and control, backplane reset,
system clock signals, and an LED test signal.
■
Power delivery
— The power delivery connector
provides the following voltage: +2.1V, +3.5V,
+5.2V, and +12V.
■
System communications channels
— The
management system uses two types of busses to
communicate with other modules in the Switch:
■
Serial Communication Interface (SCI)
— The
SCI bus serves as a communications path
between management modules.