Run eBGP Everywhere: What OSPF, EIGRP and iBGP Actually Cost in the Campus and the Data Centre
Cisco recommends eBGP for the campus and an IGP for the data centre, four months apart. I counted what each design costs,…
Why nbn Chose Amazon Leo Over Starlink: The Criteria Were Published in 2023
nbn named its LEO criteria in June 2023: price certainty, sovereignty, local support. Starlink structurally fails two of them. What the FOI…
Amazon Leo in Australia: nbn’s 600 ms Problem Is Ending, Slowly
nbn is retiring Sky Muster for Amazon Leo. The orbital maths behind the latency claim, the FCC waiver hanging over the 2027…
Post-Quantum Cryptography and Australia’s 2030 Deadline: What It Means for Your Network
ASD gives Australia until 2030 to retire RSA, DH, ECDH and ECDSA, five years ahead of NIST. What PQC is, and what…
Cisco Switch Configuration Best Practices: Build Template
Key Takeaways One template for every switch, every site. You review one config and you’ve reviewed them all, which is the whole…
Cisco Native VLAN: How It Works and Why Mismatches Bite
Key Takeaways The native VLAN is just “the VLAN that doesn’t get a tag.” Untagged frames arriving on a trunk are placed…
Cisco Switchport Modes, DTP, and switchport nonegotiate
Key Takeaways Five modes, one question: does this port trunk, and does it negotiate? access and trunk are static answers. dynamic auto…