1-1

Chapter 1

Introduction
The 9E132-15, 9E133-36, 9E138-12, and 9E138-36 MicroLAN™ Switch Modules,
shown in Figure 1-1, are four channel Ethernet bridges and routers. Up to three
front panel Ethernet networks can be connected to this module and they can be
bridged/routed to any other Ethernet segment and to any other SmartSwitch
9000 module via the FNB bus (acting as the fourth port).

Features

Processor
The Ethernet MicroLan Switch Modules are equipped with an advanced Intel i960
microprocessor. This microprocessor provides a platform for all management
functions within a scalable RISC-based architecture.

System Management
The Ethernet MicroLan Switch Modules provide interfaces to the two System
Management Buses (SMB-1 and SMB-10) for intermodule management.

Connectivity
The 9E132-15 provides four RJ-45 ports and one EPIM slot for each of the three
channels. See Chapter 5 for information on the use of EPIMs.
The 9E133-36 has one 50-pin front panel for each of the three channels, providing
12 individual Ethernet connections each.
The 9E138-12 provides four ST-type multi-mode fiber optic connections for each
of the three channels, for a total of 12 connections.
The 9E132-15, 9E133-36, 9E138-12, and 9E138-36 MicroLAN™ Modules will
be referred to collectively as the Ethernet MicroLan Modules.
NOTE