10 Quality of service
This chapter covers
- Enabling IP telephony with voice VLANs
- Powering IP phones and other devices with Power over Ethernet
- Prioritizing important network traffic in times of congestion with quality of service
Network resources—bandwidth, in particular—are not unlimited. This means that networks can become congested, and bottlenecks can occur, negatively affecting network performance and the experience of the network’s users. Some types of network communications are more sensitive to these problems. For example, users in a voice/video call, due to their real-time nature, are more likely to notice a network slowdown than users communicating via email.
Quality of service (QoS) is a set of technologies that enable the prioritization ...
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