Network4Dev is a new site created by Daniel Dib and Cristian Sîrbu to give application developers a base of technical articles about networking. It’s a really interesting idea, and we hope the IT community will help build it into a true resource to make better applications.
@DanielDibSwe
Snowflake Networks
A network is just like a snowflake. It’s a unique a beautiful thing, right? Except when it’s not unique or beautiful. Snowflakes may all look different, but in the end they are all made of frozen water in a crystalline structure. They look different but behave very similarly. Networks aren’t complicated if you follow some […]
Using BFD to Track WAN Status and Change HSRP Priority
Daniel Dib comments on his blog: It’s been five years since I started this blog! Time flies and a lot has happened since. Thanks for being along for the ride. What better way to celebrate than a blog post? This post is going to be short and to the point. Many of us run HSRP or VRRP. […]
Cisco Adds New Routers In the ISR 4000 Family
Daniel Dib writes on his blog: The Cisco ISR G2 routers have been around for a while now. Roughly a year ago, Cisco released the Cisco 4451-X router which was the first ISR running IOS-XE. Cisco has now added new routers to the 4000 family, which means that the ISR G2 family will eventually go […]
Potential Issues with Multicast within a VLAN Spanning Switches
Daniel Dib of Daniels networking blog comments: I ran into an interesting issue yesterday at work. There is a new video system being installed, which takes the video output from computers, encodes it and sends it as multicast to a controller. The controller then displays it on a video wall. I had been told that […]
Routing Considerations in DDoS Protection Environments
Daniel Dib of Daniels networking blog comments: Lately I have done some studying for the CCDE and one of the things I was looking at is how to protect against DDoS attacks. I’m not expecting it to be a big topic for the CCDE but it has some interesting concepts relating to routing. Take a […]
Ethernet, STP, Topology change and the behaviour of Ethernet
Daniel Dib of Lost In Transit writes: Introduction This post is inspired by a post at IEOC about Uplinkfast and TCN which can be found here. Before we get to those parts, let’s recap how Ethernet and STP work together. Daniel has a great overview of spanning tree as well as some of the peculiar […]