Artesyn AXP640, Installation And Use Manual, Page: 44 / 190

Platform Architecture
AXP640 Installation and Use (6806800M24F )
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1.4 Network Descriptions
This section describes the operational aspects of each of the shelf’s network designs, based on
the Base and Fabric interfaces.
1.4.1 Base Interface
The base hub slots (physical slots 3 and 4) have four pairs of 1000Base-T signals to node slots
which form the dual star topology fabric. Each of the node slots support two base channel
interface signals that connect to each hub slot. In turn, the channel 1 base interface of each hub
slot is connected to the SAM. Each of the hub slots support a total of six base channels.
The hub slots require connectors P20, P21, P23 and P24. The base node slots require only
connectors P20 and P23.
1.4.2 Fabric Interface
The fabric interface supports point-to-point connections between AdvancedTCA blades. In the
AXP640, these fabric connections are configured in a dual star topology that runs back to the
hub slots. The AXP640 system has Option 9 channel slots. These channels are aggregated at
the hub slots into the dual-star topology. In this configuration, all node slots support one fabric
channel to each of the two hub slots.The fabric channels are located on connector P23 of the
node slots, and connectors P20, P21, and P23 of the hub slots. 40 Gbps connectivity is
supported.
The blade slots are numbered physically from 1 to 6 from the bottom going to the top of the
shelf. Each slot also has a "logical" slot number that defines it for backplane connectivity;
logical slot numbers are not shown on the shelf. Please note that the slots will be referred to
by their physical slot location.