Compared to the universe, a data center represents a relatively small and well organized place. These artificial digital systems designed by human engineers have a relatively small set of states they can be in, and an equally small set of orchestrated behaviors that are entirely predictable and reproducible. …

In 1905 a young Albert Einstein presented the revolutionary concept of quantized light to his fellow scientists. It was a radical departure from the popular theories of continuous energy at the time, by Maxwell and others. “In this paper I wish to communicate my train of thought and present the…

Giving your network engineers a fighting chance with the industry’s most truly open NOS — A recent blog reminds us that VXLAN overlay networks can be tricky to troubleshoot, as a typical encapsulation header adds 50 bytes per packet and RFC7348 simply assumes that the network is configured to support such larger payloads. …

Netlab 1.4 sneak preview (unofficial) — Imagine you are an IXP deploying technologies like RFC9161 EVPN with proxy ARP and MPLS over RSVP-TE, and you need to come up with a validated multi-vendor design. How would you go about that? The Netlab team has got you covered. Check out this example — a sneak preview with upcoming Netlab 1.4 features (work in progress) S1/S2 are data center routers doing EVPN/VXLAN with proxy ARP; iBGP control plane and ISIS IGP. Anycast gateways are available in the ‘red-hot’ vlan

Featuring Netlab 1.3.1 and FRR 8.3.1 — At the beginning of this year I wrote about my SR Linux BGP EVPN adventures, with considerations around underlay and overlay design and the illustrious iBGP-over-eBGP approach. …

Using #SRLinux for flexible decentralized DDoS attack detection #SecDevOps — Distributed Denial of Service (DDoS) attacks continue to be a major problem for many network operators and their customers. …

Austin, 12–13 February 2022 — So there I was, ready to do battle in my blue corner of the ring. Together with Anton Karneliuk from Karneliuk.com — author of pyGNMI among other things — we got started on a multi-vendor NAPALM driver using gNMI as a backend. Working around the clock in our different time…

We’re in Austin, Texas this week where the 84th North American Network Operators Group (NANOG) convention is taking place. …

Building and integrating custom SR Linux agents — part Ⅱ — A ‘lubber’ is a “big, clumsy person”, a word more commonly used in the form of ‘landlubber’ meaning someone unfamiliar with the sea or sailing. …