Flexible software-defined networking (SDN) protocol for service provider networks

a service provider and flexible technology, applied in the field of computer networks, can solve the problems of affecting the next generation of sdn deployment, rigidity, and providers are reluctant to large-scale sdn deployment, and achieve the effect of facilitating nodes to forward packets

Active Publication Date: 2019-10-17
INDIAN INSTITUTE OF TECHNOLOGY BOMBAY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a hardware system that allows nodes to forward packets based on certain criteria such as offset, length, and instruction. This system can be used to define any protocol, service, or combination of header space fields and instructions that need to be worked on. Additionally, the system can work on multiple instances of these protocols, services, and headers simultaneously. The defined space can be parsed using a graph or limited parsed graph. Overall, the system provides a flexible and efficient way to forward packets based on any number of predicates.

Problems solved by technology

Providers are reluctant to large-scale SDN deployment due to unavailability of carrier-class large whiteboxes.
Among others, there are two obstacles that can impact next generation SDN deployment: (1) The SDN protocol of choice (OF, see e.g., N. McKeown, et al., “OpenFlow: Enabling Innovation in Campus Networks,” ACM SIGCOMM Computer Communication Review, Vol. 38, No. 2, pp 69-74, 2008) is rather rigid.
(2) Many vendors have developed their own controller—one that provides a programmable north bound interface (NBI), (see e.g., Ciena Blue Planet and Juniper Contrail), but severely restricts the south bound interface (SBI) to a vendor-specific forwarding plane.

Method used

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Embodiment Construction

[0041]The following description is presented to enable any person skilled in the art to make and use the embodiments described herein, and is provided in the context of a particular application and its requirements. Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the described embodiments. Thus, the described embodiments herein is not limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0042]One of the first approaches of data-control plane separation is the ForCES. For example, see (1) “Forwarding and control element separation (ForCES) framework,” L. Yang, R. Dantu, T. A. Anderson, and R. Gopal, IETF, Fremont, Calif., USA, RFC 3746, April 2004, and (2) “Forwarding and control element separation (ForCES) p...

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Abstract

Methods and apparatuses for building a programmable dataplane are described. Specifically, the programmable dataplane can work on a list of identifiers, such as those part of OpenFlow 1.5. Specifically, the programmable dataplane can be built by creating a virtual network graph at a controller node using binary identifiers such that a node is broken into an n-ary tree and the tree has 1×2 or 1×1 nodes.

Description

RELATED APPLICATION[0001]This application claims priority to Indian Patent Application No. 201821014626, having the same title and inventors, which was filed on 17 Apr. 2018, the contents of which are herein incorporated by reference in their entirety for all purposes.BACKGROUNDTechnical Field[0002]This disclosure relates to computer networks. More specifically, this disclosure relates to flexible SDN protocol for service provider networks.Related Art[0003]Software-defined networking (SDN) technology facilitates network management flexibility, by separating the management of a control plane of network devices from an underlying data plane that forwards network traffic. Such separation of control functions and forward functions enables the SDN network policy to be directly programmable. SDN offers a centralized and programmable network that is capable of meeting the dynamic needs of clients in the network. Furthermore, service provider concerns over ever-increasing CapEx and OpEx in ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04L12/703H04L12/24H04L12/26H04L12/721H04L45/28
CPCH04L41/0668H04L45/28H04L43/045H04L45/72H04L43/08H04L45/42H04L45/38H04L45/48H04L45/22H04L41/40H04L43/20
Inventor GUMASTE, ASHWINKUSHWAHA, ANIRUDDHASHARMA, SIDHARTH
Owner INDIAN INSTITUTE OF TECHNOLOGY BOMBAY
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