Specifications
Table Of Contents
- AR Router Hardware Reference
- Copyright
- Contents
- Introduction
- Models Covered By This Reference
- Where To Find More Information
- Using Windows Terminal and Windows Hyperterminal
- Router Start-up
- Online Documentation
- AT-TFTP Server
- Memory
- AR300 Series Routers
- AR400 Series Routers
- AR700 Series Routers
- AT-RPS 740
- Mini Accelerator Cards (MACs)
- PCI Accelerator Cards (PACs)
- Flash Memory
- Interfaces
- Test Facility
- Cables And Loopback Plugs
- PICs and NSMs
- Restricted Procedures
- Contacting Us

Hardware Reference 17
C613-03058-00 REV A
Memory
All AR300 Series routers, except the AR390 and AR395, have 8MB of fixed
(non-expandable) DRAM. The AR390, AR395, AR410, AR410S, AR720, and
AR740 routers have 16MB of fixed (non-expandable) DRAM.
The AR725 and AR745 routers have 128MB of SDRAM DIMMs. Other sizes are
supported, e.g. 256 and 512MB, see your authorised Allied Telesyn distributor
or reseller for upgrade options. Other supplier’s DIMMs are not approved, and
therefore not supported, but may function correctly. AR725 and AR745 routers
also have a slot for compact flash cards. See “Flash Memory” on page 63 for
more information on flash memory.
The amount of DRAM present in a router can be checked using the command:
SHOW SYSTEM
This will produce a display like that shown in Figure 2 on page 17. The DRAM
and FLASH fields show the amounts of DRAM and flash memory, respectively.
Figure2: Example output from the SHOW SYSTEM command.
Router System Status Time 17:10:06 Date 25-Sep-1999.
Board ID Bay Board Name Rev Serial number
--------------------------------------------------------------------------------
Base 62 AR720 M1-0 6845218
IC Module 40 0 AR022 PIC Eth M2-0 6844595
IC Module 38 1 AR023 PIC Sync M1-1 6844715
MAC 67 AR012 CMAC M2-0 33636409
--------------------------------------------------------------------------------
Memory - DRAM : 16384 kB FLASH : 4096 kB
--------------------------------------------------------------------------------
SysDescription
CentreCOM AR720 version 1.8.1-00 08-Sep-1999
SysContact
David Johns, ext 8331
SysLocation
Laboratory, First Floor, Head Office Building
SysName
LAB
SysUpTime
250074 ( 00:41:40 )
Software Version: 1.8.1-00 08-Sep-1999
Release Version : 1.8.1-00 08-Sep-1999
Patch Installed : NONE
Territory : europe
Help File : help.hlp
Boot configuration file: load.cfg (exists)
Current configuration: load.cfg
Security Mode : Disabled
Patch files
Name Device Size Version
--------------------------------------------
52772-02.paz flash 94856 7.7.2-2
--------------------------------------------