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Software-Defined Networking with OpenFlow

You're reading from   Software-Defined Networking with OpenFlow Deliver innovative business solutions

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Product type Paperback
Published in Oct 2017
Publisher Packt
ISBN-13 9781783984282
Length 246 pages
Edition 2nd Edition
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Authors (2):
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Oswald Coker Oswald Coker
Author Profile Icon Oswald Coker
Oswald Coker
SIAMAK AZODOLMOLKY SIAMAK AZODOLMOLKY
Author Profile Icon SIAMAK AZODOLMOLKY
SIAMAK AZODOLMOLKY
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Toc

Table of Contents (11) Chapters Close

OpenFlow reference switch

The OpenFlow switch is a basic forwarding element, which is accessible via the OpenFlow protocol and interface. Although this setup would appear to simplify the switching hardware at first glance, flow-based SDN architectures such as OpenFlow may require additional forwarding table entries, buffer space, and statistical counters that are not very easy to implement in traditional switches with application specific ICs (ASICs).

In an OpenFlow network, switches come in two flavors: hybrid (OpenFlow enabled) and pure (OpenFlow only). Hybrid switches support OpenFlow in addition to traditional operation and protocols (L2/L3 switching). Pure OpenFlow switches have no legacy features or onboard control and completely rely on a controller for forwarding decisions.

Most of the currently available and commercial switches are hybrids. Since OpenFlow switches...

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