CCIE vs CCDE
Probably one of the mostly asked questions by the networking experts. CCIE vs CCDE. How many times you asked yourself or discussed with someone else about this ? I think many times. right ? I have CCIE Routing Switching and/or Service Provider, should I continue to Design certificates such as CCDE or should I study… Read More »
The post CCIE vs CCDE appeared first on Network Design and Architecture.
HTIRW: Reality at the Mic (1)
We’ve talked a little about the structure of the IETF, and the process a draft follows when moving from submission to draft to RFC… The perennial question is, though — why does it take so long? Or, perhaps — why is the IETF so broken? Let me begin here: the IETF is a human organization. […]
Author information
The post HTIRW: Reality at the Mic (1) appeared first on Packet Pushers Podcast and was written by Russ White.
Estimating BGP Convergence Time
One of my readers sent me this question:
I have an Internet edge setup with two routers connected to two upstream ISPs and receiving full BGP routing table from them. I’m running iBGP between my Internet routers. Is there a formula to estimate convergence time if one of my uplinks fail? How many updates will I need to get the entire 512K routes in BGP table and also how much time it would take?
As always, the answer is it depends.
Read more ...Install Mininet on an Amazon EC2 server
To install the Mininet SDN network simulator on a remote server running on Amazon’s EC2 cloud1, follow the procedure shown below. After installing it, I did some basic tests and it seems that Mininet works well on the Amazon EC2 server.
From my laptop PC, I connect to the Amazon EC2 instance via SSH. In the example below, the server’s private key file AWS-PrivateKey.pem is stored in the folder ~/AWS and the server’s public IP address is 55.155.1.55. I had previously created a new user brian on the server.
brian@Laptop:~$ ssh -X -i ~/AWS/AWS-PrivateKey.pem [email protected]
To install the latest stable version of Mininet, plus all supporting software, execute the following commands on the Amazon EC2 server running Ubuntu Server 14.04.
brian@AWS:~$ sudo apt-get install git
brian@AWS:~$ git clone git://github.com/mininet/mininet
brian@AWS:~$ mininet/util/install.sh -a
To test the installation, run the following command:
brian@AWS:~$ sudo mn --test pingall
The benefit of installing Mininet on a remote server such as an Amazon EC2 instance is that I can now experiment with Mininet from any computer, including a tablet or smartphone, at any time as long as I have a connection Continue reading
CCIE R&S — By the Numbers
When I started studying in earnest for my CCIE, I started a log of how I was spending my time studying, which books and papers I'd read, videos I'd watched, and so on. I thought it would be a neat exercise to look back afterwards at what it took to achieve this goal. I'm also somewhat self-deprecating and tend to minimize my accomplishments, so having this data is a way for me to remember that this wasn't a small accomplishment at all.
March Meetup Challenge
Firstly wanted to thank everyone who participated in the February Network Topology Photo Challenge! There were some amazing topologiesThe Year of IPv6?
IPv6 adoption has been slow. But I think it’s reaching a tipping point. I’m very close to calling 2015 “The year of IPv6.” There’s plenty of people who won’t believe me, but the statistics are very interesting. You need to keep a close on eye on what the data is saying.
Recently I asked the question “What percentage of Internet traffic needs to be IPv6 for you to consider IPv6 to be mainstream/arrived/the year of IPv6?”
@bobbobob had the best answer for when IPv6 can be considered ‘mainstream’:
@northlandboy When I see criminal minds, or law and order using a poorly faked IPV6 address when they're 'hacking', I'll say it's arrived.
— Rabbit Sultan (@bobbobob) February 21, 2015
But @icemarkom was probably technically correct with this answer:
@northlandboy More than 50%.
— Marko Milivojevic (@icemarkom) February 20, 2015
So how far away is that? It’s tough trying to measure IPv6 adoption. Traffic patterns are region- & user-specific. The services that Chinese users access are different to those that a New Zealand business users. Traffic is often concentrated with a few ISPs and/or a few big services (Google, Facebook, Twitter, etc).
I like to use the Google IPv6 statistics Continue reading