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2-24 Sun Netra CP3240 Switch Installation Guide • September 2009
2.4.4 Expansion Fabric Switch Subsystem
FIGURE 2-5 Expansion Fabric Switch Subsystem
PICMG 3.0 AdvancedTCA provides an agnostic mesh on the backplane called the
Expansion Fabric. This interface is the data plane in the shelf. The Expansion Fabric
is called “Fabric” in this guide. This fabric can be several different technologies
defined by AdvancedTCA sub-specifications. The Sun Netra CP3240 switch is
designed to comply with PICMG 3.1 Ethernet/Fibre Channel for AdvancedTCA Systems,
options 1 and option 9. That means the Sun Netra CP3240 switch provides a single
1/10Gigabyte port to each node board.
The Fabric uses 10GBase-BX4 Ethernet to provide connectivity between boards
though the backplane. The Fabric can scale down to 1Gigabyte and work with
1000Base-BX boards. The Fabric subsystem is based around two main components:
the Broadcom BCM56800 and the Freescale MPC8247.