On 15/12/2025 09:13, Tom Samplonius via NANOG wrote:
Juniper PTX 10001-36MR. I have no idea what these cost “on the street” now, but Juniper had great deals Dec 2024 on these.
Or if you are purchasing in 2026, the Juniper MX301. This is probably the best “minimally viable 400G” router, as it pushes a bit farther than the FIB scale of the Arista stuff, but at the cost of relatively low 400G density.
If you don't mind not having Trio, the ACX7300 will give you 4x 400Gbps ports, each of which can also break out into lower speed ports. There is also the ACX7100, which will also do 4x (32C) and 6x (48L) 400Gbps ports. But these are 1U, non-modular chassis. The MX301 looks pretty sexy, but one will pay through the nose for that Trio chipset. I'm not sure how mature EdgeCore are now, but their AGR560 has 12x 400Gbps ports: https://www.edge-core.com/product/agr560/ Not a lot of 400Gbps options on the market at the moment that won't have you sacrificing something big. Mark.