Cisco Catalyst 6880-X Specifications download pdf (Page 9)

Introduction April 2014

Use Case: Enhancing LAN Capacity and Functionality

As the needs of an organization change, the network should be able to be refreshed easily to adapt and support

the new requirements for LAN capacity and functionality delivered.

This design guide enables the following network capabilities that support enhancing LAN capacity and

functionality:

• High design modularity—Uses network modularity and hierarchy in order to easily introduce network

components along with component options that support alternative functionality and new connectivity

methods as requirements change.

• Software flexibility—Offers resilient platform software upgrade options and feature set licensing to

minimize disruption of business communication while introduce new features to support an organization.

• Operational efficiency—Allows for bandwidth and capacity refresh as needed by an organization, in a

consistent way that is not a burden to network administrators.

Design Overview

The LAN is the networking infrastructure that provides access to network communication services and resources

for end users and devices spread over a single floor or building. A campus network is created by interconnecting

a group of LANs that are spread over a small geographic area. Campus network design concepts are inclusive

small networks that use a single LAN switch up to very large networks with thousands of connections.

This guide provides a design that enables communications between devices in a building or group of buildings,

as well as interconnection to the WAN and Internet edge modules at the network core.

Specifically, this document shows you how to design the network foundation and services in order to enable:

• Tiered LAN connectivity

• Wired network access for employees

• IP Multicast for efficient data distribution

• Wired infrastructure ready for multimedia services

Hierarchical Design Model

This architecture uses a hierarchical design model to divide the design into modular groups or layers. Breaking

up the design into layers allows each layer to implement specific functions. This simplifies the network design

and therefore the deployment and management of the network.

Modularity in network design allows you to create design elements that can be replicated throughout the

network. Replication provides an easy way to scale the network as well as a consistent deployment method.

In flat or meshed network architectures, changes tend to affect a large number of systems. Hierarchical design

helps constrain operational changes to a subset of the network, which makes it easy to manage as well as

improve resiliency. Modular structuring of the network into small, easy-to-understand elements also facilitates

resiliency via improved fault isolation.

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Cisco Catalyst 6880-X Specifications Page 9