VRF Architectures
1. Basic VRF Architecture Diagram A single router with two VRFs (e.g., Customer_A and Customer_B), each with its own routing table and interface. Purpose: Shows how two VRFs keep overlapping IP spaces separated. 2. Traffic Isolation in VRFs Two devices …
What is the Global BGP Routing Table?
The Global BGP Routing Table is a comprehensive database that contains all the IP address prefixes (routes), which are advertised by ASNs, and the associated paths to reach them across the internet.
What’s in the box? Cambium RV22
Some photos of the Cambium RV22.
Troubelshooting home Internet router issues. A quick guide
Here are some steps to solve a customer’s home router slowness issue. I have found over the years 90+% of customer issues can be traced to the router at their home or location. 1. Diagnose the Problem Start by asking …
How Does TCAM Work in Routers?
In a previous post, I asked if TCAM is still needed in modern routers. In this post, I will examine how TCAM works in routers and provide some more insight into TCAM. In a router, TCAM stores and processes rules …
The anatomy of a network router’s routing table
A route table is essentially a database used by a router to determine the optimal path for forwarding data packets. It consists of a collection of entries, each representing a destination network or a specific host. These entries contain essential …
Network Routers are ….
Network routers are a bit like vampires—they thrive in the dark and cool. When heat waves strike, they huddle in server rooms, longing for winter or a polar vortex to save the day. Anything to escape the blistering heat that …
What is TCAM memory in a router? and is it still needed?
Many higher-end routers have a specialized type of memory known as TCAM (Ternary Content Addressable Memory). In this post, I will explain the intricacies of TCAM memory in routers, exploring what it is, how it works, and its critical role …
Packets Down Range #6:OpenWifi, iOT, RDOF,CBRS
Welcome to issue #6 of Packets Down Range. The thing I am excited about lately is the 100 Gig passive mux by solid optics. One of the hats I wear is running an IX. We are always looking for ways …
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 …