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Riverstone Networks RS 32000 Switch Router Getting Started Guide 2-1

2 INTRODUCTION

The RS 32000 performs non-blocking, wire-speed layer-2 switching, layer-3 routing, and layer-4 application

switching. This chapter provides a basic overview of the RS 32000 software and hardware feature set.

• If you want to skip this information and install the RS 32000, see Chapter 3, "Hardware

Installation."

• If you want to boot the RS 32000 software and perform basic configuration tasks, see Chapter

4, "Initial Configuration."

Note For the latest operating software and user documentation, check the

Riverstone Networks web site at www.riverstonenet.com.

2.1 FUNCTIONAL LAYER TERMINOLOGY

This guide and other RS documentation refers to layer-2 (L2), layer-3 (L3), and layer-4 (L4) switching and

routing. These layers are based on the International Standards Organization (ISO) 7-layer reference model. Here

is an example of that model. The RS operates within the layers that are not shaded. Notice that layer 2 is divided

into a MAC layer, an LLC layer, and an LLC2 layer. The RS 32000 operates at the MAC and LLC layers.

Table 2-1 ISO 7-layer model and RS 32000 capabilities

Layer 7 Application

Layer 6 Presentation

Layer 5 Session

Layer 4 Transport TCP/UDP - application

Layer 3 Network IP/IPX - routing

LLC2

Layer 2 LLC

MAC Bridging

Layer 1 Physical Physical Interfaces

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 110 111

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