W17BS

Deploying a FastAPI based application for FreeRADIUS

HTTP endpoints make life easier

Posted on May 23, 2022

I’ve built a FastAPI app which you can run on your FreeRADIUS servers to handle the interaction between external scripts/os/bss and the database. This also includes returning data in a presentable format instead of having to correlate users and groups to specific attribute pairs stored in the radcheck/radreply/radgroupcheck/radgroupreply tables. (Also... [Read More]

My experience with trying to design a BNG infrastructure (#1)

Probably a very long and boring post about IPoE and DHCP

Posted on May 14, 2022

NOTE: This will be a multi-part post because there is too much to cover in 1 sitting… [Read More]

Unified MPLS Study Session

CCNP/CCIE Service Provider Exam (v5) - Study with me

Posted on December 28, 2020

SPCOR (350-501) objective 3.1.d Unified MPLS [Read More]

L3VPNs - Route Target Constraint (RTC)

IOS-XR L3VPN quick tips

Posted on December 13, 2020

I’ll be trying a new approach instead of writing a full detailed blog, each subject that I am going through will be recorded here on my blog without going into too much detail but I will provide screenshots of pcaps/highlight the important areas of the packet that I am talking... [Read More]

Automating basic BGP Flowspec rules with Python and ExaBGP

Well, it isn't completely "automated".

Posted on November 22, 2020

BGP - Border Gateway Protocol. You’ve heard of it, I’ve heard of it, we’ve all configured it in a lab or in production using our favorite terminal emulator over SSH, heck even Telnet if you’re a mad man, or even Netconf if you’re too cool for the CLI. [Read More]

Automating Grafana Dashboards with Python + Netbox

Why faff around when you can write a few lines of code?

Posted on September 26, 2020

Netbox is cool and all… It’s a neat little IPAM (with other features integrated) and is extremely easy to spin up a pre-built docker container for experiemental purposes. Many months ago, I was tasked to set up a tool called Grafana. I’ve never heard of this tool before and at... [Read More]

Imagine building your own MPLS-TE/SR-TE Controller

Sounds pretty cool right?

Posted on July 31, 2020

Just imagine… Not having to pay $75,000 per year for a controller that is literally built to just steer traffic throughout your MPLS/SR domains? Well, this isn’t the place you will find that information… However, you are not here to read a blog where I complain about the different controllers... [Read More]

IS-IS Multiarea/level SPF Convergence

One of the boring (exciting) parts of studying...

Posted on July 3, 2020

A warning prior reading this blog: There is a lot of output snippets from various show commands… [Read More]

Cisco XR YDK Useful Modules

A list and examples of useful modules in Python

Posted on June 27, 2020

I’m sharing this list because of the amount of trouble/time it has taken me to find useful modules for help the average netconf/yang virgin that is unable to find a good example on configuring devices running Cisco XR or even just reading information such as interface configurations, IGP configs, implementing... [Read More]

Metro Ethernet Studies

CCNP Service Provider

Posted on April 11, 2020

1.1.a Core architectures (Metro Ethernet, MPLS, unified MPLS, SR) [Read More]