Cisco Systems SCE 2000 4/8xFE The SCE 2000 Platform, Topology Considerations, C H A P T E R

C H A P T E R 3

Topology

This chapter describes the possible deployment topologies of the SCE 2000. The Cisco SCE solution offers a number of basic topology options that permit the user to tailor the SCE Platform to fit the needs of a particular installation. An understanding of the various issues and options is crucial to designing, deploying, and configuring the topology that best meets the requirements of the individual system.

This chapter contains the following sections:

• The SCE 2000 Platform 3-1

•Topology Considerations 3-1

• Physical Topologies 3-4

The SCE 2000 Platform

The SCE 2000 introduces a solution for dual links with load sharing and asymmetrical routing and support for fail-over between two SCE platforms.

The SCE 2000 supports wire speed processing of full-duplex 2-Fast Ethernet streams. The SCE 2000 can, therefore, be deployed in a multi-link environment, either in a single or dual SCE platform topology.

•single SCE 2000 topology — Provides increased network capacity and the ability to process both directions of a bi-directional flow, processing both the upstream and downstream paths of a flow, even if they traverse different links

•dual SCE 2000 topology (cascade) — cascaded SCE 2000s provide high-availability and fail- over solution and maintain the line and service in case of SCE 2000 failure.

Topology Considerations

There are several issues that must be considered in order to arrive at the optimum configuration of the topology-related parameters:

•Functionality — Will the system be used solely to monitor traffic flow, with report functionality only, or will it be used for traffic flow control, with enforcement as well as report functionality?

Cisco SCE 2000 4/8xFE Installation and Configuration Guide

OL-7826-05 3-1