Howdy. In my last post I discussed the need for an open source framework to drive merchant switching silicon. Towards the end of that long post, I mentioned a future post talking about the Switch Abstraction Interface (SAI) and switchdev in depth. Welcome to that post. There’s been a lot of synergy between both projects, […]
The post What Are SAI And Switchdev And Why Do We Need Them To Succeed? appeared first on Packet Pushers.
Howdy. In my last post I discussed the need for an open source framework to drive merchant switching silicon. Towards the end of that long post, I mentioned a future post talking about the Switch Abstraction Interface (SAI) and switchdev in depth. Welcome to that post. There’s been a lot of synergy between both projects, […]
The post What Are SAI And Switchdev And Why Do We Need Them To Succeed? appeared first on Packet Pushers.
Diving into the BGP Table First a Look at the Local BGP Table Before we begin… let’s take a look at the BGP table. One would assume (rightly so) that anything called the “BGP table version” probably is tied somehow... Read More ›
The post Understanding BGP Table Version – Part 1: Intro to BGP Table Version appeared first on Networking with FISH.
**This blog is a formatting cleanup and update to a previous blog I posted in 2013 on NetworkWorld.
Years and years ago I was trying to learn more about BGP and I was reading some book with a chapter on the topic. Back then I pretty much believed that if it made it into a book it must be true and my knowledge had to be in error. 
So to say I was confused back then would be an understatement.
Why? Well ya see… they basically said that the reason one must set the TTL to 2 for eBGP peers that are directly connected, but peering with their loopbacks, was cause “the TTL gets decremented on the way to the loopback”
When I try to help someone deprogram this brain washing, I find pictures help. So for those who’d like to get deprogrammed and learn the truth… Let’s go play in the lab!!!
In the picture above we have 3 Routers in 3 different BGP ASes. We all probably know that if we peer R1 and R2 Continue reading
Robert Graham published another great blog post explaining why you need user-space handling of network traffic for multigigabit performance on x86 servers. A must-read if you’re interested in performance of software-based packet forwarding.
Want more? Listen to Snabb Switch Deep Dive and PF_RING Deep Dive podcasts.
Need product details? I collected some performance data points in the NFV webinar.
Summary: By preparing a plan and strategy for the CCIE lab, the chance of passing will be a lot higher.
Over the years I have written about the CCIE multiple times and also mentored people on how to prepare for the lab. This post will summarize my experience of how to prepare for the CCIE lab. This post assumes that the CCIE written has already been successfully passed.
The first thing to do if you haven’t done it already is to make sure you have the support from your family before starting to prepare for the lab. Explain to them the time that you will need to put in to prepare and also explain why you want to do it and what the benefits of doing it will be. Preparing for the lab can take 1000-2000h which is a big commitment. Don’t bypass this step as it may seriously affect your family situation if you do.
Once you have commited it is time to grade yourself. Go through the blueprint for the track you are preparing for at the Cisco Learning Network. Grade yourself on each topic from 1-5 on where you believe you are today. Make a realistic assessment, Continue reading
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If only the right hand knew what the left hand was doing.
Phew! It was a busy week in the realm of software defined networking (SDN) and network functions virtualization (NFV). Here’s a final roundup: Microsoft launched a technical preview of Azure Stack, software for running a private, on-premises cloud. This opens the possibility of running a hybrid cloud where the public and private halves both run on... Read more →
This week, Plexxi co-founder Dave Husak hosted interactive discussion on the evolving role of network administrators, the future of cloud environments and bringing order to the chaos of software-defined networking, at a BOSNOG (Boston Network Operators Group) event. Dave and the team enjoyed connecting with other networking professionals in the area and listening to other viewpoints on the future of the network. Take a look at a few photos from the event below and keep an eye on the blog and Twitter for updates on future events.
Photo credit: Ethan Banks
Below please find a few of our top picks for our favorite news articles of the week.
ESG Global: Plexxi Draws Google’s Attention – and Money
By Steve Duplessie
Plexxi is one of those “intelligent infrastructure” companies I’ve been harping about as of late. And by intelligent, in this case I mean a network that can self-actualize and alter its very being based on real-time application and usage demands. It’s way cool. And because I love to tell you “I told you so”, which I did over a year ago, I now get to rub your noses in it. This stuff matters. Google Ventures just plopped some Continue reading