Emerson AXP640-AC2-110VAC, Installation & Use Manual

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Chapter 1
AXP640 Installation and Use (6806800M24E)
19
Platform Architecture
1.1 Description
The AXP640 is designed as an open standard platform on which to run applications in the
Telecom Central Office environments. It combines existing PICMG standards featuring high
speed serial data fabrics. These standards serve to streamline the architecture by eliminating
the overhead of bridging, increasing payload, and eliminating the need for system and non
system slot blades. This is accomplished by using the Intelligent Platform Management
Interface (IPMI) and dual Ethernet star network which allows for communication between all
node blades using Ethernet.
The AXP640 is a high-availability platform with special locations for Shelf Management Alarm
Module (SAMs), six 8U x 280mm slots, six 8U x 70mm rear transition modules, Fan Tray
Modules, (FTMs), and DC Power Entry Modules (PEM) or AC Power Supplies (PSU).
1.2 PICMG Compliance
The AXP640 is designed to be compliant with PCI Industrial Computers Manufacturer’s Group
(PICMG) specifications 3.0 and 3.1, and also provides support for PICMG 1.5.1 IPMI bus for
system management.
1.3 Shelf Topology
Topology refers to the shape of a network, or the network's physical layout. The way that
different nodes in a network are connected to each other and how they communicate are
determined by the network's topology.
The backplane of the AXP640 uses a dual star topology that supports two independent
networks. The dual star uses a point-to-point configuration with redundancy added for
reliability. All devices on a star network are connected to a central connection point (hub).
Nodes communicate across the network by passing data through the hub slot, which on the
AXP640 contains a switching function that forwards packets to the appropriate port based on
the packet's address. Switching hubs support traditional Ethernet (10 Mbps), Fast Ethernet
(100 Mbps), Gigabit Ethernet (1000 Mbps) ports and 10G-KR (40 Gbps) ports.