Avaya Configuring Differentiated Services Bedienungsanleitung PDF herunterladen (Seite 22)

Configuring Differentiated Services

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Figure 1-1. Differentiated Services Network

Communicating with the Bandwidth Broker

If your differentiated services network uses a bandwidth broker, the router uses

the COPS protocol to communicate with the bandwidth broker. COPS enables the

exchange of policy information between the bandwidth broker and its clients.

The router is the COPS client. The COPS client uses the Transmission Control

Protocol (TCP) to communicate with the bandwidth broker. The COPS client can

connect to only one server at a time, choosing the server from list of servers that

you define.

When the router requests a filter from the bandwidth broker, the bandwidth broker

responds with its own request to perform one or more of the following actions:

• Install a new filter.

• Update an existing filter.

• Disable or enable an existing filter.

• Delete an existing filter.

For each request, the differentiated services application on the router takes the

necessary action and then sends an acknowledgment back to the bandwidth

broker. Note that the bandwidth broker can also send unsolicited requests.

BLN

ASN

High-

performance

router

Bandwidth broker/

policy server

ISP or enterprise network

Server manager

Host

DFS0001A

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Avaya Configuring Differentiated Services Bedienungsanleitung Seite 22