Packets DownRange
Internet Service provider topics, Network operations, and other topics. Some topics include Mikrotik, Cisco, Arista and other configurations.
This post will walk you through what a VRF is, why it matters, and how it’s used in real-world networking. What is a VRF? VRF stands for Virtual Routing and Forwarding. It’s a technology that allows multiple instances of routing tables to coexist on the same physical router or Layer 3 switch. Each VRF is … Read more
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 connected to the same router but isolated via VRFs. 3. VRF Routing Tables Example Purpose: … Read more
A key component enabling this efficiency is the optical splitter, which divides the optical signal to serve multiple endpoints. However, choosing the right GPON splitter strategy is crucial
When it comes to networking and the internet, two terms frequently come up: TCP (Transmission Control Protocol) and IP (Internet Protocol). These are fundamental protocols that enable communication between devices over the internet. However, they serve different purposes
A dedicated management network is the backbone for efficient monitoring, troubleshooting, and administration
When choosing an internet service provider (ISP), many consumers focus solely on the advertised speed, measured in megabits per second (Mbps) or gigabits per second (Gbps). While speed is undoubtedly important, it is far from the only factor that determines the quality of your internet experience. Here’s why raw speed is not everything when selecting … Read more
In a GPON (Gigabit Passive Optical Network), splitters are essential components that allow multiple end users to share a single fiber optic link from the service provider’s central office. Key Reasons for Using Splitters in GPON
In the broadband industry, the race for higher speeds has dominated marketing campaigns and consumer expectations. Internet Service Providers (ISPs) continually tout gigabit speeds as the ultimate benchmark for quality. While speed is important, a more critical yet often overlooked aspect of internet performance is interconnection—the way ISPs connect and exchange traffic with other networks. … Read more
The IP (Internet Protocol) packet header is a crucial part of how data is transmitted across networks. It contains vital information that helps routers and devices determine where the packet is coming from, where it’s going, and how to handle it. In this post, we’ll break down the structure of an IPv4 packet header, explain … Read more
The TCP/IP (Transmission Control Protocol/Internet Protocol) is the backbone of the internet and most modern networks. It ensures that data is transmitted reliably and efficiently between devices, whether you’re sending an email, streaming a video, or browsing a website. In this blog, we’ll break down how TCP/IP works, its layers, and how data moves across … Read more
High Availability in Ubiquiti. UniFi Shadow Mode is a high-availability (HA) feature for UniFi Cloud Gateways (UDM-Pro, UDM-SE, UDM-Pro-Max, EFG) that provides instant failover by creating an active-passive pair. A secondary “Shadow” gateway mirrors the primary’s configuration and state, automatically taking over within seconds if the primary fails, using Virtual Router Redundancy Protocol (VRRP) and shared IP/state … Read more
Ethernet over IP (EoIP) is a protocol developed by MikroTik that allows the creation of a Layer 2 VPN tunnel between two MikroTik devices over an IP network. This is useful for extending local networks across remote locations. In this guide, I will demonstrate how to configure an EoIP tunnel using MikroTik version 7. Prerequisites … Read more