Networking 7 min
Everything you need to know about Autonomous System Numbers โ what an AS is, the difference between public and private ASNs, how they work in BGP, 2-byte vs 4-byte ASNs, how to look one up, and the process for getting your own.
May 26, 2025
Networking 7 min
A deep dive into Bidirectional Forwarding Detection โ why BGP's default failure detection is dangerously slow, how BFD provides sub-second link failure detection, and how to configure it on Cisco IOS-XE, IOS-XR, and NX-OS.
May 25, 2025
Networking 3 min
BGP was built for trust, not security. RPKI fixes that by cryptographically validating route origins โ here's how to deploy it on Cisco IOS-XE, IOS-XR, and NX-OS.
Apr 15, 2025