QoS on Slow-Speed Links

In this section, you make the most of your limited bandwidth on lower-speed WAN interfaces. Specifically, you are introduced to compression technologies, which send fewer bits across the link, and link fragmentation and interleaving technologies, which fragment large payloads to reduce the serialization delay that is experienced by smaller payloads.

Tools for Using Bandwidth Efficiently

The two broad categories of compression are as follows:

Payload compression—Reduces the payload size, using approaches such as STAC, Predictor, or MPPC.

Header compression—Reduces the size of the TCP and RTP headers.

The goal of compression technologies is to increase the throughput over a WAN link while reducing the delay. However, ...

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