The 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
What is the difference between throughput & goodput?
Throughput Throughput is the rate at which data is traversing a link. For example, take a look at the virtual router output below. The throughput rate is 643Kbps in each direction. [crayon-54facc3328376599378258/] Goodput Goodput is the rate at which useful data traverses a link. Assuming an uncongested path between endpoints, goodput and throughput will […]OSPF Design Considerations
Introduction
Open Shortest Path First (OSPF) is a link state protocol that has been around for a long time. It is geneally well understood, but design considerations often focus on the maximum number of routers in an area. What other design considerations are important for OSPF? What can we do to build a scalable network with OSPF as the Interior Gateway Protocol (IGP)?
Prefix Suppression
The main goal of any IGP is to be stable, converge quickly and to provide loop free connectivity. OSPF is a link state protocol and all routers within an area maintain an identical Link State Data Base (LSDB). How the LSDB is built it out of scope for this post but one relevant factor is that OSPF by default advertises stub links for all the OSPF enabled interfaces. This means that every router running OSPF installs these transit links into the routing table. In most networks these routes are not needed, only connectivity between loopbacks is needed because peering is setup between the loopbacks. What is the drawback of this default behavior?
- Larger LSDB
- SPF run time increased
- Growth of the routing table
To change this behavior, there is a feature called prefix suppression. When Continue reading
PlexxiPulse—What Does a Third Era Network Look Like?
You may have noticed that we’ve been spending some time out west demonstrating our big data fabrics and sharing our vision for the third era of networking. You’ll be seeing more meet-ups and live demonstrations in the near future, so keep an eye on the blog and on Twitter to see where we are headed next. In the meantime, can you name the 5 main characteristics of a third era network? Hint: the answer is somewhere on the Plexxi website. Tweet us your answers for the chance to win some Plexxi swag. We can’t wait to hear from you!
Below please find a few of our top picks for our favorite news articles of the week. Enjoy!
InformationWeek: 8 Ways IoT Will Change IT Forever
By Andrew Froehlich
There has been a great deal of discussion lately surrounding the concept of how the Internet of Things (IoT) will change everything. But very little of it really dives into the nuts and bolts of how IoT could dramatically change the roles and opportunities for those of us who work within IT. Here are eight ways we think IT will change in an IoT world. We’re focusing on areas of IT that Continue reading
Auvik February Release Notes
February 2015 Release Notes - What's new in the new year! Add and edit alerts and notifications: You can edit any of the predefinedRunning a Small Docker Swarm Cluster
In this post, I’m going to show you how to set up and run your own Docker Swarm cluster. Docker Swarm is a relatively new orchestration tool from Docker (the company) that allows you to create a cluster of hosts running Docker (the open source project) and schedule containers across the cluster. However, just scheduling and running containers across a cluster isn’t enough, so I’ll show you how to add service registration and service discovery to this environment using Consul.
In the event you’re interested in following along, I’ve created a set of files that will allow you to use Vagrant to run this Docker Swarm cluster (on your laptop, if so desired). You can find all these files in the “docker-swarm” folder of my GitHub learning-tools repository.
The Docker Swarm cluster I’m going to show you how to build has 3 major components:
- A cluster of systems running Consul. In this case, Consul serves a dual purpose. First, it’s used as the discovery service for the Docker Swarm cluster itself. Second, it provides service registration and service discovery functionality for the Docker containers launched on the Swarm cluster.
- A set of hosts running the Docker daemon (version 1.4. Continue reading
Network Break 30
Over-opinionated analysis on data network and IT Infrastructure. And virtual doughnuts.
Author information
The post Network Break 30 appeared first on Packet Pushers Podcast and was written by Greg Ferro.