Introduction - Allied Telesis AR Series Hardware Reference Manual

Hardware Reference
C613-03031-01 REV E

Introduction

This Hardware Reference describes the hardware features of all AR300, AR400,
and AR700 Series router models, including information on Mini Accelerator
Cards (MACs) and PCI Accelerator Cards (PACs). Hardware and installation
information for Port Interface Cards (PICs) and Network Service Modules
(NSMs) can be found in their respective Quick Install Guides and Hardware
References.
This Reference does not cover software configuration or software installation
procedures. For information on software, refer to your router's Software Reference.
This Reference does not cover AR100 Series routers. For information on AR100 Series
routers, refer to the AR100 Series Internet Router User Guide or AR100 Series Internet
Router Software Reference. These documents can be found on the CD-ROM packaged
with your AR100 Series router, or at www.alliedtelesyn.co.nz/support/ar100/
index.html.
AR300 Series routers have fixed interface configurations and do not have
expansion capabilities. Some AR400 Series routers and all AR700 Series routers
have expansion bays that accommodate Port Interface Cards (PICs), which
provide additional or new interfaces. The AT-AR740 and AT-AR745 routers
also have an expansion bay to accommodate a Network Service Module (NSM),
which either directly provides further interfaces, or provides multiple slots
where additional PIC interfaces can be added.
AR300 Series routers, AR400 Series routers, AR720 and AR740 routers have a
dedicated Mini Accelerator Card (MAC) slot that accommodates special
purpose MAC coprocessor cards. MAC cards provide additional functionality
or performance, such as compression or encryption, but do not add extra
interfaces.
In addition to a MAC slot, AR740 routers also have a PCI Accelerator Card
(PAC) slot. This slot accommodates PACs. Like MACs, PACs provides
additional compression and encryption functionality, but do so through a high
performance PCI bus.
The AR725 and AR745 routers have a PAC slot only.
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