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Configuring Differentiated Services

B-6

308620-14.00 Rev 00

A Differentiated Services Network Using Static Traffic Filters

In this configuration example, a corporate enterprise network connects employes

to corporate information, such as benefits forms. The employees need to

download forms, which are HTTP pages, from a server. When a client requests a

form, this request and data should receive a higher priority than other requests, so

differentiated services is implemented.

In this network, instead of using filters configured on a policy server, filters are

configured statically on the router.

To implement differentiated services in this network, you must configure two

interfaces on the router. One interface sends data to the clients and the other sends

requests and control packets locally to the server. Two interfaces are needed

because the router can implement only inbound filtering for differentiated

services, which means that the router filters only packets that it receives, not those

it sends.

Figure B-2

shows the differentiated services network.

Figure B-2. Differentiated Services Network Using Static Filters

192.32.40.8

192.32.9.7

128.9.7.26

Client

AN 4

AN 2

data

TCP open

DFS0003A

BLN 1 BLN 3

Client

HTTP

forms

server

Enterprise

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Avaya Configuring Differentiated Services Manual do Utilizador Página 80