1 / 48

William Stallings Data and Computer Communications 8th Edition

Key Points. congestion occurs when number of packets traveling throught a network approaches capacitythe lack of flow control mechanisms built into ATM and frame relay protocols makes congestion control difficultATM networks establish a traffic contract with each userATM networks monitor the cell

sef
Download Presentation

William Stallings Data and Computer Communications 8th Edition

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

    1. William Stallings Data and Computer Communications 8th Edition Chapter 13 Congestion in Data Networks

    2. Key Points congestion occurs when number of packets traveling throught a network approaches capacity the lack of flow control mechanisms built into ATM and frame relay protocols makes congestion control difficult ATM networks establish a traffic contract with each user ATM networks monitor the cell flow from each incoming source and may discard or label cells that exceed the agreed traffic flow

    3. What Is Congestion? Congestion occurs when the number of packets being transmitted through the network approaches the packet handling capacity of the network Congestion control aims to keep number of packets below level at which performance falls off dramatically Data network is a network of queues Generally 80% utilization is critical Finite queues mean data may be lost

    4. Queues at a Node

More Related