NFV Terminology and Architecture from ETSI
Well, if you thought SDN introduced a lot of terminology, you’ll love NFV! The good news is that ETSI, which defines NFV, does a great job documenting NFV, with extensive term and acronym lists to support other documents about the details of NFV architecture. Several of the ETSI NFV docs provide some great stepping-stones for understanding the basic concepts and terminology, which is where we’ll go in this post.
This is the last in a related series! The other posts:
- SDN Terms and Architecture from RFC 8426
- SDN Terms and Architecture from ITU Y.3300
- And this post! About ETSI NFV Terms and Architecture
A Brief Big Picture of NFV
One of the challenges with this blog is figuring out how much prior knowledge to assume. If you don’t know much at all about NFV, read this section for a quick intro. Otherwise, skip to the next heading.
Briefly…
Think of every networking device used in the IT world. Those include routers, switches, firewalls, intrusion detection systems, load balancers, and so on. Traditionally, those devices have indeed been devices – purpose built hardware, running some OS that performed the networking function.
While you’re thinking of the old way to network, Continue reading
IT/IT: Data Can’t Lie?
A statistician is someone who can put their head in a hot oven, and their feet in a bucket of ice, and say, “on the average, I feel fine.”
Before we move completely into a world where people are counseled, “use the data, Luke,” disregarding their own beliefs and feelings, we need to have a little discussion. As an example of what we might get wrong, let’s take a look at some interesting problems in the polling from recent elections. According to one article (which happens to have all the numbers conveniently gathered in one place) —
- On May 7th, in an election in Britain, the pre-election polls showed conservatives would win around 280 seats. The exit polls during the election showed the conservatives would win around 316 seats. During the election, conservatives actually won 330 seats.
- In 1992, also in Britain, the pre-election polls showed the conservative and liberal parties in a dead heat. The conservatives actually won by 7.5 points.
- In the recent election in Israel, Likud was predicted, through polling, to win 22 seats. Likud actually won 30 seats.
These aren’t random events — they are repeated time and again in elections through the last Continue reading
Congratulations to Roy Lexmond on Passing CCDE Practical Exam !
I am very glad to announce that Roy Lexmond from my April CCDE training class passed his CCDE Practical exam yesterday in France. Below is his success story and here is his earlier feedback for the class. I should say that He really likes the design and open to learn new things and very clever.… Read More »
The post Congratulations to Roy Lexmond on Passing CCDE Practical Exam ! appeared first on Network Design and Architecture.
Alcatel-Lucent Launches the Network Services Platform for Carrier SDN
Alcatel-Lucent expands its carrier SDN portfolio with Network Services Platform.
Netconf Python ncclient
In my earlier blogs, I had covered basics of Netconf and Yang and how to use Netconf to configure Cisco devices. Recently, I came across this Python ncclient library that simplifies the configuration/monitoring of Networking devices that supports Netconf. Using ncclient library, we can programmatically configure and monitor devices using Netconf. I also found out that … Continue reading Netconf Python ncclient
NFV Terminology and Architecture from ETSI
Well, if you thought SDN introduced a lot of terminology, you’ll love NFV! The good news is that ETSI, which defines NFV, does a great job documenting NFV, with extensive term and acronym lists to support other documents about the details of NFV architecture. Several of the ETSI NFV docs provide some great stepping-stones for understanding the basic concepts and terminology, which is where we’ll go in this post.
This is the last in a related series! The other posts:
- SDN Terms and Architecture from RFC 8426
- SDN Terms and Architecture from ITU Y.3300
- And this post! About ETSI NFV Terms and Architecture
A Brief Big Picture of NFV
One of the challenges with this blog is figuring out how much prior knowledge to assume. If you don’t know much at all about NFV, read this section for a quick intro. Otherwise, skip to the next heading.
Briefly…
Think of every networking device used in the IT world. Those include routers, switches, firewalls, intrusion detection systems, load balancers, and so on. Traditionally, those devices have indeed been devices – purpose built hardware, running some OS that performed the networking function.
While you’re thinking of the old way to network, Continue reading
Do We Need NAC and 802.1x?
Another question I got in my Inbox:
What is your opinion on NAC and 802.1x for wired networks? Is there a better way to solve user access control at layer 2? Or is this a poor man's way to avoid network segmentation and internal network firewalls.
Unless you can trust all users (fat chance) or run a network with no access control (unlikely, unless you’re a coffee shop), you need to authenticate the users anyway.
Read more ...