Archives

Category Archive for: ‘Study Time’

SDN, OpenFlow and OpenDaylight Updates and Recordings

Stop Cant Do It Sm

It’s been a busy few weeks in the SDN debate. I am posting some SDN updates from April along with some recordings from various events. The Open Networking Summit held its event. Only a few of the videos have posted so far. The keynotes and presentations that stuck out to me were, Rose Schooler from Intel, Bruce Davie from Nicira/Vmware, …

Read More

Putting Together Provider Bridging, Provider Backbone Bridging, S-Tags and C-Tags

PBB1

Putting Together Provider Bridging, Provider Backbone Bridging, S-Tags and C-Tags: Understanding carrier bridging techniques is important, not just for provider operators, but also for engineers on the customer edge. When turning up or troubleshooting a circuit, carrier operators will ramble off C-tag and S-tag when many in the enterprise, are used to hearing Vlan ID in single tenancy deployments. More …

Read More

OpenFlow: SDN Hybrid Deployment Strategies

Risk

This series of posts, has been focused on reviewing some practical OpenFlow SDN deployment strategies.¬†Early SDN, will be hybrid networks and early niche applications to begin understanding how to integrate pockets of SDN, mitigate risks and most importantly understand the technology to properly scale solutions. If you try and put 5,000,000 access-lists into a kit that can only do 2,000 …

Read More

OpenFlow: Coarse vs. Fine Flows

Flow Factory2

OpenFlow: Coarse vs. Fine Flows – This series of posts, is to shed light on some illogicalities¬†surrounding the SDN discussion. I will highlight what I propose, will achieve performance and scale when implementing flow based forwarding designs. Soon these debates, will no longer be conceptual or limited deployments in only the hyper-scale networks, as more of us begin real-life implementations. …

Read More

SDN OpenFlow Policy Abstractions

Flow Factory4

SDN OpenFlow Policy Abstractions : Abstraction layers are a fundamental principle in computer science. It is a core pillar in creating efficiencies through layered, modular scale. Proper abstraction layers are also where the networking train came off the tracks. Network operators program network devices using proprietary APIs one device at a time. In today’s networks, when we push policy to …

Read More

The Control Plane, Data Plane and Forwarding Plane in Networks

Layered Planes

The Control Plane, Data Plane and Forwarding Plane in Networks is the heart core DNA in today’s networking hardware to move IP packets from A to Z. The Management plane is another vital component but also widely excepted as user to hardware interaction. These planes of operation are the building blocks of the layered architecture that networks have evolved to …

Read More

The Best MPLS Lecture on the Net

All Stacks1

The Best MPLS Lecture on the Net: The title says it all. Professor¬†Karandikar gives two amazing lectures on MPLS and MPLS-TE that most engineers should hope to know cold. I watch it probably once every few months. Not saying much for my memory these days. It is an amazing amount of material delivered very precisely. Great stuff! I added some …

Read More

Ethernet Switch Fabric Cards

I was working with a buddy today about ethernet switch fabric cards in the nexus 7000 and not doing a very good job at explaining it, so I figured I would draw some pictures. The conversation was around how adding more fabric cards increases the bandwidth. I think some, myself included growing up on Catalyst 6500′s got accustomed to a …

Read More

Page 1 of 212»