January 2021
Beginner
565 pages
19h 27m
English
Content preview from Fundamentals of Communications and Networking, 3rd Edition
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Layer 3 Network Redundancy and Resiliency
A network’s capability to maintain a certain level and quality of service at all times, regardless of faults and interruptions, is resilience. In other words, the network is resilient to failure. For the network to be resilient, its Physical Layer media, its Layer 2 network access functions, and its Layer 3 forwarding and addressing functions must have hot-swap redundancy ready to take over when there is a network or system failure. However, redundancy and resiliency are not the same. Redundancy is a form of resilience.
Configuring Resilience
Redundancy can provide resiliency, but only through the installation of additional devices, systems, or links that are able to come online when the primary ...