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OVERVIEW

Catalyst 8500 Series

Multiservice Switch Router

Introduction

The Catalyst 8500 series Multiservice Switch Routers integrate

multiservice ATM switching with wire-speed multiprotocol

routing and Layer 2 switching for Gigabit Ethernet into a single

platform that also supports advanced Cisco IOS services for QoS

and security. The Catalyst 8500 family delivers campus and

metropolitan network solutions with scalable performance, lower

cost of ownership, and the features needed by intranet-based

applications to deliver increased business productivity.

Historically, enterprise network managers faced a choice of

several different technologies when building or upgrading

campus network backbones. Today, the choice is between Fast

Ethernet/Gigabit Ethernet on one hand, which provides high

performance, low cost, and familiarity (relative to Ethernet), and

ATM on the other hand, with its high performance, advanced QoS

capabilities, support for multiservice voice/data integration and

metro/wide area extendability. The network designer must also

think about the role of routing in the backbone, which is required

for network scalability. The Catalyst 8500 family takes the risk

out of this choice by supporting Fast Ethernet/Gigabit Ethernet,

ATM, and wire-speed multiprotocol routing in a single platform.

This combination enables network designers to combine multiple

technologies in a single network, using each to its best advantage.

It also greatly simpliﬁes future migration from one technology to

the other, should the needs of the network backbone change over

time.

Applications

Large-scale deployment of centralized server farms and the

proliferation of intranet applications are continuing to drive the

exponential growth of trafﬁc volumes in enterprise networks. The

increased trafﬁc volumes are coupled with fundamental shifts in

trafﬁc patterns that do not conform to traditional network design

principles such as the 80/20 rule.

Centralized Server Farms and Mission-Critical Applications

The implementation of centralized server farms is increasing the

volume of client/server trafﬁc that traverses the

campus backbone. Mission-critical applications demand

differentiated service levels from the network because they need

protection from other types of trafﬁc. Scalable control, high

performance, and rich QoS mechanisms are therefore

prerequisites to meeting these requirements in any enterprise

network.

Because applications are inherently end-to-end, it is not

sufﬁcient for a single system in the network to support trafﬁc

prioritization at the application level. A common framework is

required to represent the different service levels, and every

network node needs to understand the framework in order

to support differentiated services. In addition, network

administrators also need tools to easily provision and manage

these different service levels throughout the network.

Wire-speed performance, scalable control, and

rich QoS capabilities of the Catalyst 8500 series allow network

managers to smoothly integrate the Catalyst 8500 with

the Catalyst 5500, the Cisco 7500/7200 series, the LightStream

1010 and IGX 8400 switch, as well as the MC 3810. Using a

Cisco end-to-end solution, they can create a unique solution that

truly meets the end-to-end QoS requirement for differentiated

services in the enterprise. CiscoAssure Policy Networking

orchestrates the provisioning and management of multiple service

levels necessary to maintain consistent application-level QoS

throughout the enterprise.

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Strany 1 - Multiservice Switch Router

Strany 2 - • Catalyst 8500 series

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Strany 6 - Benefits

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Strany 8 - IGMP snooping

Strany 9 - Forwarding

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