The Cisco Nexus 9000 supports two versions of network operating system on the device. You can buy some models of the Nexus 9000 family today that run NX-OS just like the NX6K, NX7K etc and late in 2014 “NX-OS Plus” will be available. Two operating systems for the same switch isn’t new for Cisco if you remember the switch […]
In a recent discussion someone asked the relatively simple question “What does Programmable Networking even mean ?” and, after I stumbled around trying to explain, agreed to write something that attempted to explain what I see as the basic requirement that networking has not met. Here are some ideas just jotted down to open the discussion a bit wider.
VMware NSX got it’s official launch this week at VMworld. As a measure of how important VMware regards NSX, the first keynote on the first day is Martin Casado doing the official presentation.
My general view is the NSX is the real deal. I have been talking and writing about OpenFlow since May 2011 and many have complained that SDN isn’t important and I should focus on real network issues. Well, it should now be clear that SDN is a serious strategy issue and we might have been ahead of the market.
I was commissioned by GigaOmPro to write a report on “SDN Challenges in Large Scale Deployments”. I spoke with a number of network and virtualization engineers about their perspectives on SDN, the challenges they faced and how they would use Software Defined Networking in their data centres. It was evident during the research phase is that many people are not clear on what Overlay Networking is and just how deeply Overlay Networking will change Data Centre architecture and especially the nature of the networking and security domains.
The next topic of a technology discussion to consider is whether the overlay network needs to be integrated, in some way, with the physical network. To recap, an overlay network uses modern tunnelling protocols to connect software Network Agents in Hypervisors or Operating Systems. Today, these Network Agents are little more than “robot patch panels” (you probably call them vSwitch’s) but in the near future these agents will be complete networking devices performing switching, routing & filtering inside your server.
This is a clever way to kickstart a much needed technology to support OpenFlow. Kudos for trying something new. To accelerate adoption of the OpenFlow protocol, ONF is running a competition to create an open-source “OpenFlow Driver”. ONF intends this driver to be of use to developers of OpenFlow products by making it easier […]
In the process of building cloud networks over the last 3 months, it has become clear that a lot of people have problems accepting that Overlay Networking is a viable technology. The current1 version of the future in Software Defined Networking (SDN) in the Data Centre will use overlay networks using technologies like VXLAN, NVGRE […]
I wrote a white paper for Nuage Networks that is the first Packet Pushers White Paper. Nuage Networks have announced their version of SDN and I think it’s solid vision of what Software Defined Networking will become over the next couple of years – tunnel fabrics, software network agents in the server with load balancing and routing capabilities and controller/application software that can manage multiple data centres and their WAN networks.
Jump in and take a read.
Looking at using SDN & OpenFlow to perform a firewall migration on a rule by rule basis instead of using any of the other nasty, crufty hacks. Very useful when you want to find an easier and low risk way to get rid of those pesky CheckPoint firewall products.