Photo Sunday
Follow me on Instagram for technology, and sometimes not technology, related photos. @j2sw
Medium WISP Core Network Design
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WIFI calling port forwarding
Recently I came across a need to do some port forwarding for wifi calling. I have assembled a resource guide to help you if you need to do such things. IPSEC should be allowed per RFC 5996 https://tools.ietf.org/html/rfc5996 for all …
New Youtube Intro
Loving the music and the graphics
The BrothersWisp Podcast
Finally had some time to contribute to another podcast I am a part of. http://thebrotherswisp.com/index.php/the-brothers-wisp-115-wisp-after-death-unifi-video-eol-rpki-basics/ This week we talk about:WISP Virtual Summit July 28thSave Dave’s brainRIP Ubiquiti Unifi Video – EOL 1/1/2021zwift.comCloudflare DNS outageDavid – Arduino, PHP programming, cycling and …
WISP Whitepaper
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.This content is …
A Longitudinal View of Netflix
This came across the NANOG mail list. A Longitudinal View of Netflix: Content Delivery over IPv6 and Content Cache Deployments paper: https://bit.ly/2toOGWPslides: https://bit.ly/2ZoEpapvideo: https://vimeo.com/437111302 Some highlights Caches reachable within 6 IP hops and 20 ms-IP path lengths shorter by 40–50%-Latency …
Network troubleshooting tools
Recently, there was a thread on the NANOG list asking what were somne favorite network troubleshooting tools. I have taken many of these tools and created the following list. http://ping.pe/Simple pingport and dig commands https://mtr.sh/BGP Looking glass https://perfops.net/mtr-from-worldTraceroute from various …
Podcast: Dead technologies for service providers
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I put together a quick 5-minute podcast talking about two dead technologies for service providers. What is on your list of things no longer relevant or used? #j2podcast #packetsdownrange #routethelight
ISPs and vacation..yes you can get away
Let’s face it, if you are an owner, sysadmin, network admin, or whatever in a small to medium Internet Service Provider vacations can be a troublesome thing to accomplish. Getting away for a conference or training can be a huge …