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Hello, Does anybody have experience to configure OpenFlow switch with XenServer? Such as Pica8 to support hardware OVS instead internal OVS in XenServer.
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肖碧涛's profile photo
 
ovs in xenserver config with xenserver command best
It is some difference with OVS
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The one company that is a big proponent of Openflow, and uses it extensively connecting their dozen or so datacentres is Google.  They've been using Openflow for about 3 years, and developed their own Switches to connect to WAN. According to the paper, they are getting very efficient on these links showing in excess 90% utilisation.  They claim considerable cost savings and greater control of their applications, but without some problems encountered during deployments. The paper discusses the Network Engineering experiences encountered using Openflow.
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Olivier Zheng's profile photo
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SDN adoption is progressing at different rates depending on which market segment you are in (Carrier, Enterprise, Mobile). But the quickest does appear in the data-centre space where they leveraging existing virtualisation technology to this new paradigm. 
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Big Switch Networks, a big player in the Openflow movement had a rollercoaster week. Firstly, the company was listed as one of  the top ten Startups to work for. 

Link
http://www.bigswitch.com/blog/2013/07/22/linkedin-finds-bay-area-engineers-very-interested-in-big-switch-networks 

Also, in the same week they announced one of their top engineer was leaving the company

Link
http://www.sdncentral.com/news/big-switch-engineering-vp-moving-on/2013/07/

Or could it be that that he was not successful in adopting Big Switch Controller in the OpenDaylight consortium, and he is paying the price?

Link
http://www.lightreading.com/big-switch-pulls-back-from-opendaylight/240156064
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Ping Services's profile photo
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A rumour going around that Cisco is looking to buy Big Switch.

http://www.sdncentral.com/news/breaking-news-big-switch-angling-cisco-acquisition/2013/09/

If its true, the theory I have would be that they move the whole team onto OpenDayLight Project and accelerate the development of that controller, and eliminate the Big Switch Controller (Less confusion in the marketplace).
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Review copies available for “Software Defined Networking with OpenFlow”

We have a few e-copies of Software Defined Networking with OpenFlow ( http://bit.ly/18HDaFg ) available for review.

If interested, just drop a line in the comments below with following required details:

1. Email address (Drop a mail if interested to merwynf <at > packtpub <dot> com)
2. Choice of website for posting your book-review (can be your blog or website, Amazon.com or goodreads.com)

"Software Defined Networking with OpenFlow" is a step-by-step, example-based guide which will help readers gain hands-on experience with the platforms and debugging tools on OpenFlow. Readers can develop their innovative network application using the OpenFlow controller’s API quickly, and test their network application without commissioning any OpenFlow hardware equipment.
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Merwyn Fernandes's profile photo
 
Simone Mangiante's Reviews > Software Defined Networking with OpenFlow:
 https://www.goodreads.com/review/show/818941350?book_show_action=true
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reading Two and a Half Years After OpenFlow Debut, Media Remain Clueless - by Ivan Pepelnjak 
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Cisco's spin in Insieme is finally coming out of stealth and announcing their new Nexus 9000 on November 6th. They are attacking several markets with this product, or more likely trying to neutralise several SDN offerings on the market. The 9000 will use a powerful dedicated ASIC for the task rather than "off than shelf". The marketing is interesting. They are calling it Application Centric Infrastructure (ACI) and not a single SDN terminology is used.  Typically, the applications demand the network resources. Sounds very familiar to Plexxi's offering with Affinity networking.
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The key concepts and ideas of SDN are well understood now. There are number of use cases of SDN already in production networks. As soon  as mainstream starts to adopt SDN, Vendors will naturally start to offer training on their product/service offerings. Thereafter, formal certifications will proceed. Indeed two of the biggest Vendors of Networks, Cisco and Juniper are already working on SDN Certifications. I'm sure some of the startups of SDN are already thinking about certifications. If you remember the early adopters of Cisco CCIE, and Juniper JNCIE, they have carved out very successful careers.  I have no doubt if you pick the right SDN Certification there is good chance to repeat the success.
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Nick Feamster, the guy who brought SDN to the masses via MOOC on coursera has teamed up some other colleagues to create a test bed to create the first Software Defined Internet eXchange (SDX). The paper looks into current deficiencies of the existing exchanges and merits of running SDN on these exchanges.
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Jason Yang

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why are there people dont discuss the openflow/sdn? 
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arslan waqar

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ConteXtream is probably one of the earliest SDN startups going. Probably even predates before the SDN was coined by the Stanford guys. Their marketing has naturally pivoted to reflect this new terminology. They term their technology as Grid Computing, a sophisticated overlay type network. They want to emulate what VMware and Citrix did to the datacentre but targeted to Telco/Carriers/ISP space. They don't use openflow, but use a combination of Distributed Hash Tables (DHT) and Datagram Congestion Control Protocol (DCCP)  to good effect. They are probably one the very few companies making money in this space, and management staff are mainly ex-3Com'ers

Youtube Video
Contextream Building SDN for Carriers
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