Introducing the J2SW BGP Community Builder
The J2SW BGP Community Builder selects documented provider communities and generates scoped policy fragments for MikroTik, Cisco, Junos, and FRRouting.
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Introducing the J2sw MTU and Encapsulation Calculator
Ever wondered what the effects of different combinations of PPPoE, GRE, and others have on the MTU of a packet? I am excited to announce the first of many J2 Network tools: the J2SW MTU and Encapsulation Calculator. You select the service MTU and the encapsulation used on the path. The calculator then works out … Read more
BGP: What is the no_export Community?
In this post, I will dive into what the no_export attribute is, how it works, and when you should use it.
Using Point-to-Point OSPF and example configurations
In this post, I will break down what OSPF point-to-point mode is, when to use it, and why it might be your best option.
QoE Solutions for ISPs: Enhancing Subscriber Experience Through optimized Networks
Let’s take a look at some of the leading QoE solutions designed for ISPs and network operators, ranging from commercial platforms to open-source tools.
Vendor Quirks & Common Pitfalls in BGP Configuration
In this post, I walk through some key quirks and common pitfalls you might encounter when configuring BGP on MikroTik RouterOS (v6 & v7), Cisco IOS, Juniper Junos, and Arista EOS.
Juniper BGP Configuration .set and templates for my Patreon Subscribers. $15
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 at $15 or more Unlock with … Read more
Packets Down Range #31:Meta, Google, Indiana Digital Equity
It’s the beginning of the year. Do you know what that means? It’s time for conferences. FISPA livejust wrapped up. Metro Connect and others are coming. Also lots of news out of my home state of Indiana this edition. Data Center News •Meta to open a data center in Jeffersonville, Indiana. •Google is set to … Read more
Packets Down Range #30:Lumen, Databank, and investments in networks
Greetings from the great frozen Tundra of Indiana. It was 21 degrees today, which has been a heatwave. In this issue, we have a lot of data center news. Lunmen shuts down their CDN, Databank expands, and some great tech topics. Data Center News •DataBank expands in Utah. •DigitalBridge announced a 6.4 Billion equity investment … Read more
What is BGP next-hop-self and why you should care?
In this blog post, we’ll demystify the concept of next-hop-self in BGP, why it’s crucial, and how it affects routing decisions. What Is Next-Hop-Self in BGP? In BGP, the “next hop” is the IP address used to reach a particular network or destination. The “next-hop” IP address is vital for making routing decisions and forwarding … Read more
Understanding what is Ethernet Virtual Private Network ( EVPN )
Ethernet Virtual Private Network (EVPN) is designed to provide scalable and efficient data center interconnectivity. Built upon the foundation of traditional Ethernet, EVPN incorporates the best features of layer 2 and layer 3 protocols to create a flexible and secure network fabric. It offers seamless bridging and routing of traffic across data centers, making it … Read more
EVPNs: The answer to your MPLS issues
So as we dive into What is EVPN I want you to know I am approaching this from a service provider standpoint.