I had three SDN 101 presentations during last week’s visit to South Africa and had tried really hard to overcome my grumpy skeptic self and...
Showing posts with label SDN. Show all posts
Showing posts with label SDN. Show all posts
Terastream Part 2: Lightweight 4over6 and Network Function Virtualization (NFV)
In the first Terastream blog post I mentioned Deutsche Telekom decided to use an IPv6-only access network. Does that mean they decided to g...
Programming the Network – A Few Guidelines
Even though I questioned the wisdom of writing your own network programming applications , I know I would immediately jump into those waters...
Deutsche Telekom TeraStream: Designed for Simplicity
Almost a year ago rumors started circulating about a Deutsche Telekom pilot network utilizing some crazy new optic technology . In spring I’...
Cisco Nexus 9000 and ACI: Promising P+V Architecture
Last week’s Nexus 9000 and Application Centric Architecture launch triggered an avalanche of opinions. Some bloggers focused on the fact tha...
Two and a Half Years after OpenFlow Debut, the Media Remains Clueless
If you repeat something often enough, it becomes a “fact” (or an urban myth). SDN is no exception, industry press loves to explain SDN like ...
Real Life OpenFlow/SDN Use Cases
While meeting-goers debate viable SDN use cases , bleeding-edge engineers who weren't afraid to get their hands dirty started rolling ou...
Use ThousandEyes to Implement IP SLA on Steroids
You did read my blog post on ThousandEyes , didn’t you? What I forgot to mention was that they have this cool API that allows you to extract...
Flow Table Explosion with OpenFlow 1.0 (And Why We Need OpenFlow 1.3)
The number of flows in hardware switches (dictated by the underlying TCAM size) is one of the major roadblocks in a large-scale OpenFlow dep...
Forwarding Models in OpenFlow Networks
A few days ago Tom ( @NetworkingNerd ) Hollingsworth asked a seemingly simple question : “ OpenFlow programs hop-by-hop packet forwarding, r...
VMware NSX Architecture Videos Published
The edited videos from VMware NSX Architecture webinar are published on my demo content web site and on YouTube . Enjoy! Watch the videos
Exception Routing with BGP: SDN Done Right
One of the holy grails of data center SDN evangelists is controller-driven traffic engineering (throwing more leaf-and-spine bandwidth at th...
Overlay Virtual Networks 101
My keynote speech @ PLNOG11 conference was focused on (surprise, surprise) overlay virtual networks and described the usual motley crew: T...
OpenFlow and Fermi Estimates
Fast advances in networking technologies (and the pixie dust sprinkled on them) blinded us – we lost our gut feeling and rule-of-thumb . Gu...
Configure physical firewalls based on VM groups? Sure, use DSE from Plexxi
Plexxi has an interesting problem. They have a shiny new solution that requires unorthodox approaches to network forwarding and allows the...
Do You REALLY Want to Program Your Network?
The primary benefit of SDN (as claimed by its promoters) is a geek’s dream: the ability to program the network (or, more precisely, control ...
OpenFlow Fabric Controllers Are Light-years Away from Wireless Ones
When talking about OpenFlow and the whole idea of controller-based networking, people usually say “well, it’s nothing radically new, we’ve b...
The Plexxi Challenge (or: Don’t Blame the Tools)
Plexxi has an incredibly creative data center fabric solution: they paired data center switching with CWDM optics, programmable ROADMs and c...
SDDC Interview on SDNCentral
SDN Central published a short SDDC-focused interview with Brent Salisbury and myself. Enjoy ... and don't forget to register for the...
Nicira NVP Control Plane
In the previous posts I described how a typical overlay virtual networking data plane works and what technologies vendors use to implement ...