Cabletron Systems manual CSMIM-T1 Overview

Chapter 1: INTRODUCTION

1.5CSMIM-T1 OVERVIEW

The CSMIM-T1 is a dual-slot, Annex Software compatible system designed to reside in the MMAC series of hubs. The module takes the existing CSMIM2 core and adds enhanced processing power in the form of dual 486SXLC2-40 clock doubled processors. Both the main and secondary processors have been upgraded, which allows the main processor to control the MMAC network interfaces, while the second controls the serial ports. These processors have access to a minimum of 4 MB DRAM (standard), but may be upgraded to 8 MB through the installation of SIMM modules. This memory is shared between the processors, and arbitrated on a cycle by cycle basis.

Extensive power up diagnostics are provided to confidence check the system prior to the loading of application software. A Console Port is used for system setup, booting, and diagnostic purposes. After booting, the Console Port is idle. System boot is accomplished either from a UNIX host, a VAX VMS host, or an optional Flash PROM. If you are operating from Flash only, be aware that host based services such as security are not supported. If you have any questions, contact Cabletron Technical Support.

It should be mentioned that although the CSMIM-T1 is capable of running in a Novell environment, it will not boot from a Novell server. In a Novell environment, the module must be booted either from a UNIX server, or from Flash.

There are 24 V.34 modems in the CSMIM-T1. Access for the T-1 network is provided by a single RJ48C connector on the front panel. Data received from the T-1 network is either moved through the CSMIM-T1 module and onto the Ethernet backplane, or fed back out through the Drop and Insert Interface on the front panel. An example of this would be connecting the Drop and Insert Interface to a PBX for voice applications.

1-4 CSMIM-T1 Hardware Installation Guide