Troubleshooting DHCP from Cambium Networks
HOW TO. This article describes how DHCP works and how to troubleshoot common DHCP issues https://community.cambiumnetworks.com/docs?topic=82728
Yet another case for IPv6 for service providers
So recently I have been posting about the Cambium Networks QOE box I have been testing. After having this run for about a week I figured I would share this tidbit about usage. 55.39% of my traffic is IPV6 traffic. …
Globe Ed Network Fundamentals
https://www.globed.net/courses/back-to-networking-basics In this Networking Basics Workshop we will be learning the following: REFERENCE MODELSETHERNET STANDARDS AND SPECSTRANSMISSION METHODSTOPOLOGIES NETWORKING DEVICESIPV4 ADDRESSINGHEX CONVERSIONCISCO ROUTER AND SWITCH BASICCISCO ROUTER AND SWITCH CONFIGURATIONLAYER 2 SWITCHING LAYER 3 ROUTINGLAYER 3 ROUTING USING L3 SWITCHING RECORDINGS …
Pentagon transfers 175 million IP’s
As of January 2021, the Pentagon transferred 175 Million IPv4 addresses to a new and unknown Florida based company named Global Resource Systems, LLC. This came as a bit of a shock to the internet community for the following four …
A tool to find out if BGP is lying to you
APNIC has a bog article on detecting “bgp lies”. https://blog.apnic.net/2021/05/24/a-tool-to-detect-bgp-lies/Do you ever wonder whether you can really trust other networks, such as your provider(s) and peers? More precisely, wouldn’t you like to be able to tell if the traffic you send always …
Poor phone call quality fix
Our friend David over at Penny Tone has an article out on call Quality. https://www.linkedin.com/pulse/stop-suffering-from-poor-phone-call-audio-fix-david-attias/
Some fiber testing and verification
Testing a fiber cross-connect at a data center. #packetsdownrange
Featured Udemy Course: Networking
This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon subscriber for as little as $1 a month. This helps to provide higher quality content, more podcasts, and other goodies on this blog.To view this …
Interconnection Quarterly
https://static1.squarespace.com/static/5e013aba1c79407e08cf53bc/t/60610a0a5517c019d36a2083/1616972299607/Foundations+-+Interconnection+Quarterly+%284Q2020%29+.pdf From Christian Koch from Foundations I am excited to reveal that my quarterly interconnection update hastransformed into the Interconnection Quarterly, a hand-tailored,independent briefing on the interconnection industry. Right now, my plansare to publish the Interconnection Quarterly shortly after the …
Bind 9.4 helpful notes
So recently I was spinning up some new authoritative names servers. I have stuck with bind for authoritative for years because the format of the files and queries is THE standard for DNS zones. IMHO, there are some better resolvers …