Packets DownRange
Internet Service provider topics, Network operations, and other topics. Some topics include Mikrotik, Cisco, Arista and other configurations.
Does your ISP network need a way to validate customer speeds? RDOF compliance? State compliance for broadband speeds and latency? as many of you know there are problems with using public speedtest servers to validate customer speeds. J2networks, in conjunction with Aloremnetworks, has an on-premise solution that is easy to manage, small footprint, and scalable. … Read more
So, due to Covid, weather and everything else I am quite behind on blog updates and such. this is one that kinda fell through the cracks. I meant to get this out much sooner than now. My buddy Schylar Utley has a pretty cool projects for optimizing CPE deployments and such. Check them out at … Read more
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 content, you must be a member of Justin’s Patreon Unlock with PatreonAlready a qualifying Patreon … Read more
There always is a lot of talk about Mikrotik RouterOS CPU usage. I wanted to take a few minutes and go over a real-world example and explain some of the ins and outs when discussing Mikrotik CPU usage. Let’s talk about the router in question. This is a CCR1016-12s-1S+. This is a 16 core 1.2GHz … Read more
Recently I had an issue with mounting older CD-Roms of backup files and such on MacOSX Catalina. Apparently, Apple dropped support for HFS volumes. In order to fix this it is pretty easy. You will need HomeBrew. Being a network geek I already have this installed. If you need to install this here is a … Read more
I remember using this when designing web-pages years ago. It was all the rage to put browser buttons like this at the bottom.
https://docs.preseem.com/changes Features IPv6 Preseem now supports IPv6 for all use cases. This includes the ability to assign subscribers a prefix of arbitrary length. IPv4 with Prefixes of Arbitrary Length Previously Preseem modelled subnet assignments to customers as a number of /32 assignments. For example a subscriber who was assigned a /30 would result in four … Read more
I just finished up an article over on the FD-IX blog about local-prefs, default routes, and Internet exchanges. https://www.fd-ix.com/uncategorized/local-pref-and-default-routes/ Not everyone on the Internet needs full feeds from their provider. In this case, how does learning routes from an Internet Exchange such as FD-IX benefit you if all you are doing is default routes? So … Read more
The following is from http://routing.he.net/algorithm.html . This outlines the criteria HE.NET uses for filtering routes from peers and customers. This is the route filtering algorithm for customers and peers that have explicit filtering: 1. Attempt to find an as-set to use for this network.1.1 Inspect the aut-num for this ASN to see if we can … Read more
For those of you implementing Syslog triggers and such the following list will be helpful in filtering and classifying Syslog entries. 0 – Emergency 1 – Alert 2 – Critical 3 – Error 4 – Warning 5 – Notice 6 – Informational 7 – Debug
