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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
Languages
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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

Packet forwarding innovations beyond OpenFlow


There are two major approaches that are in view for packet forwarding beyond OpenFlow:

  • Protocol Oblivious Forwarding (POF)
  • Programming protocol-independent packet processors (P4)

POF

This is a recent technology proposed by Huawei Technologies that supports a protocol-independent data plane in SDN. In POF, the data-plane forwarding element does not require prior knowledge of the header structure of the protocol packet it is to traverse; rather, it can be configured by the control plane with the offsets in the configuration phase.

At runtime, the offsets are extracted by the Forwarding Elements (FE) and lookup from the flow table is done, followed by execution of the vital instructions.

This allows the forwarding element to support new protocols easily with no need to modify its hardware as well as wired protocols, such as between controller and switch.

POF is completely unaware of the protocols running on the data plane, such as the IP, TCP, and Ethernet...

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