Network Management

FLICK: Developing and Running Application-Specific Network Services

Submitted by richard on Sun, 07/10/2016 - 14:55
USENIX ATC

This paper describes a system for middleboxes that process application level data -- that is reconstructed TCP flows not packets. The system consists of three parts:
1) A language specific to middleboxes that can quickly express data formats and how to process them but in a "safe" way that allows middleboxes to co-exist on the same physical hardware.
2) An abstraction, the task graph, that breaks middlebox logic into small, parallelisable logical units (tasks) connected by channels through which data flows.
3) A system that allows the compiled code to execute in a performant way.

FLICK: Developing and Running Application-Specific Network Services

Submitted by richard on Tue, 06/21/2016 - 09:51
Location
USENIX ATC
Slides
rgc_usenix_atc_2016.pdf
Comments

This talk describes FLICK a system for the application-specific middlebox. It consists of three parts:
1) A domain specific language for the middlebox that allows easy development of typical middlebox functions.
2) An abstraction, the task graph, that allows the breaking of middlebox functions into easily parallelisable work units.
3) The system -- this implements the compiled language, handles TCP connections and memory management.

The whole system is comparable in speed to a specialist implementation.

Pushing Software Defined Networking to the access

Submitted by richard on Sun, 08/31/2014 - 20:55
Location
Budapest, Hungary
Slides
rgc_ewsdn_2014.pdf
Comments

This is the talk for the European Workshop on Software Defined Networks. It describes the implementation of OpenFlow 1.0 on a Gigabit Ethernet Passive Optical Network. The work describes a generic approach that should work on a number of different access technologies to make them OpenFlow ready. In specific, the work give details on what would be necessary to port the approach used to a new access device.

Software Defined Networking for access networks

Submitted by richard on Wed, 07/09/2014 - 21:52
Location
Cosener's House Multi Service Networks
Slides
rgc_coseners_2014.pdf
Comments

This talk describes my work in making an access device (Gigabit Ethernet Passive Optical Network) OpenFlow enabled. This is done via a proxy which uses VLAN tagging. The software is public source and available https://github.com/richardclegg/xcpd. This software should be adaptable to work with any access device of similar specification.

Pushing Software Defined Networking to the access

Submitted by richard on Wed, 07/09/2014 - 21:48
European Workshop on Software Defined Networking (Budapest)

This paper reflects on experience gained from implementing OpenFlow on an access device. The architecture used involves a box at the front of the device for tagging traffic and using those tags to make the device present as a single large OpenFlow switch distributed in space. The system has been implemented and tested using OFtest.

Code is at https://github.com/richardclegg/xcpd

Software-defined network support for transport resilience

Submitted by richard on Tue, 02/18/2014 - 22:06
IEEE/IFIP Network Operations and Management Symposium

This paper is a development of the earlier ideas in PREFLEX -- http://www.richardclegg.org/node/18

In this case the focus is resilience within a data centre. In particular resilience at the network layer. If several paths are available to a destination the system known as INFLEX can support fail over between paths seamlessly using OpenFlow. In this case the system is tested using Openvswitch.

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