FRRouting Archives

Networking tutorial - IT technology blog

Configuring GRE over IPsec on Linux for Secure OSPF Dynamic Routing

October 4, 2026

Pure IPsec tunnels drop the multicast packets that dynamic routing protocols like OSPF require. This operational guide shows you how to wrap GRE in IPsec transport mode on Linux, securing branch-to-branch links while maintaining dynamic route adjacencies.

Networking

SRv6 on Linux: Modernizing Your ISP Backbone with FRRouting

September 7, 2026

Ditch the complexity of MPLS. Learn how to deploy Segment Routing over IPv6 (SRv6) using Linux and FRRouting to build a programmable, scalable ISP backbone.

Networking

Multi-Area OSPF with FRRouting: Scaling Linux Networks for the Enterprise

July 17, 2026

Scale Linux routing with Multi-Area OSPF and FRRouting. This guide covers ABR configuration, Stub areas, and SPF optimization for enterprise networks.

Networking

Deploy BFD with FRRouting on Linux: Achieve Sub-Second Network Failover

July 17, 2026

Don't let slow OSPF or BGP timers crash your uptime. Discover how to use BFD and FRRouting on Linux for ultra-fast, sub-second network failure detection.

Networking

Securing BGP with RPKI: Configure Route Origin Validation and Register ROAs to Stop BGP Hijacking

June 19, 2026

BGP hijacking has disrupted major internet services repeatedly — and most incidents could have been prevented with RPKI. This guide walks you through registering ROA records with your RIR and enabling Route Origin Validation on FRRouting to stop unauthorized prefix announcements before they cause damage.

Networking

IS-IS on Linux: Why ISPs Choose It Over OSPF (and How to Configure It)

June 18, 2026

Discover why IS-IS is the backbone of the modern internet. This guide shows you how to configure IS-IS on Linux using FRRouting for massive scalability and better security than OSPF.

Networking

Network Lab Simulation with Containerlab: Build Virtual Router and Switch Environments Faster Than GNS3

June 17, 2026

Containerlab lets you simulate complex multi-vendor network topologies using containers instead of resource-heavy VMs — deploy a 5-node BGP lab in under 60 seconds. This guide walks through installation, topology files, FRRouting BGP setup, and CI/CD integration with practical examples.

Networking

Configuring MPLS and LDP on Linux with FRRouting: Build a Label-Switched Network in Your HomeLab

June 13, 2026

A hands-on guide to configuring MPLS forwarding and LDP on Linux using FRRouting. Covers kernel setup, a full 3-router LSP lab, label verification commands, and practical debugging tips for HomeLab environments.

Networking

Build Scalable Layer 2 Overlays: EVPN/VXLAN with FRRouting and Open vSwitch on Linux

May 15, 2026

Ditch the limitations of 802.1Q. This guide shows you how to implement a high-performance EVPN/VXLAN overlay on Linux using FRRouting and Open vSwitch for ultimate scalability.

Networking

Anycast on Linux: Deploying BGP with FRRouting for Sub-Second Failover

May 14, 2026

Anycast isn't just for CDNs. Learn how to use BGP and FRRouting on Linux to achieve sub-second failover and ultra-low latency for your critical DNS and Web services.