It's Never The Network

It's Never The Network
A place to plan, troubleshoot and learn about computer networks and other cutting edge infrastructure technologies.


This list is constantly growing, so be sure to check back.

cURL - Send a HEAD request from the NTN Webserver

DNS - Send DNS queries from the NTN Webserver

Ping - Ping servers from the NTN Webserver

Subnet Calculator - Calculate IPv4 and IPv6 Subnets

Traceroute - Run traceroute from the NTN Webserver

OUI Lookup - Find device manufacturers based on MAC Address

Whois - Find the owner of an IP address or Domain

RP Hash - Calculate PIM RP Hash Values

Latest Articles

Bootstrap Router Hash Function

By Brandon James on 2019-12-06 Filed Under: Route/Switch, Programming
RFC 7761 describes a hash function used to load balance multicast groups between Rendezvous Point (RP) candidates when you are using the Bootstrap Router (BSR) protocol to propagate RP information. One feature of the hash function is an adjustable hash mask length. If you are implementing BSR, it's important to understand how adjusting the mask impacts RP selection. In this article, I describe how the function works and provide resources to help you select the best hash mask length for your environment.

Never The Network

By Brandon James on 2019-11-23 Filed Under: unfiled
A month ago I decided to submit NTN to Cisco's IT Blog Awards in the Best Newcomer Category. To my surprise it got selected as a finalist. Since I don't have an about page, I wanted to briefly write about who I am, what NTN is and my plans for the future of NTN.

A Power User's Guide to the Linux CLI

By Brandon James on 2019-10-10 Filed Under: Cheatsheets, Linux
At first, I was using Linux because I'm a nerd and that's what we do, but I continue to use it because it increase my productivity.

Practical Automation - Netwatch

By Brandon James on 2019-09-12 Filed Under: Automation, Programming
In this article I give a brief introduction to my Netwatch script.