Blogs
Inadvertent Transit
Analyzing BGP route leak causing AS7122 outage: AS53443 leaked 535,292 DFZ routes from AS6327 during second provider turnup due to missing outbound prefix filters, combined with AS7122 accepting routes without customer filters, congesting 70% of internet-bound traffic for 13 minutes.Fastnetmon on Ubuntu 18.04
Installing FastNetMon community edition from Ubuntu 18.04 universe repository: configuring exabgp 4.0.2 with new config format using socat and pipe communication, testing BGP BLACKHOLE route injection via /var/run/exabgp.cmd for automated DDoS mitigation.MRT Dumps with GoBGP
Logging BGP routes with GoBGP MRT dumps: configuring TOML-based RIB dumps every 8 hours and BGP update files every 5 minutes, processing MRT files with BGP Scanner and mrt2mysql.py for Canadian AS-PATH tracking and routing analysis.The Road to MPLS
Building MPLS Service Provider networks from scratch: implementing VPLS on MikroTik and full L3VPN on HPE Comware, configuring LDP label distribution, understanding MPLS benefits for latency reduction and QoS, and managing customer VRFs with vpnv4 BGP peering.AS112 and BIRD
Implementing AS112 reverse DNS sinkhole using BIRD BGP daemon: installing kernel routes from BGP, configuring prefix filters for RFC1918/RFC6890 anycast addresses, and using arouteserver to automate IXP AS112 deployments with BIRD.