/127s for IPv6 Point -To-Point links

/127’s for point-to-point links (RFC 6164) instead of /64’s https://datatracker.ietf.org/doc/html/rfc6164 [RFC4291] specifies that interface IDs for all unicast addresses, except those that start with the binary value 000, are required to be 64 bits long and to be constructed in …

Two-Factor authentication trends for modern security

In the ever-evolving landscape of cybersecurity, authentication is one of the most fundamental aspects of protecting digital identities. While traditional password-based authentication has been the norm for decades, it’s increasingly proving insufficient against sophisticated cyber threats. This is where Two-Factor …

Republish: Tales from the Data Center

Originally Published in 2015So, I have a very heartwarming story today related to the WISP industry. So this started back in March. A client was having issues with a circuit. The transport provider had so many failures in troubleshooting the …

Republish: Journey into Ham Radio and DMR

I originally published this article in 2015. For years I have hung out with “Hams” and been interested in the technology.  Guys like ka8jil, w9sn, w9smj, w9cjo, and w9abh have all interested me in ham radio. I remember many years …

Designing a modular network

Several of you have heard me discuss modular network design, which has five distinct advantages. 1. ScalableYou can upgrade pieces more easily than all-in-one devices. Upgrading a certain module for that big new client might mean the difference between being …

Some random IpV6 tools

http://www.subnetonline.com/pages/ipv6-network-tools/online-ipv6-ping.phpIPV6 Ping tool http://www.subnetonline.com/pages/subnet-calculators/ipv6-subnet-calculator.phpIPV6 Subnet Calculator

What is a Data Center Interconnect

As you become more familiar with Cisco Data Center terminology, you will encounter the term DCI. A DCI is a Data Center Interconnect. DCIs typically fall into three categories. Dark Fiber (CWDM/DWDM)MPLS Layer 2 VPN (VPWS/VPLS)MPLS Layer 3 VPN A …