Last year, during a PoC, we installed 9M IPv4 and 1M IPv6 routes into the FIB of a 7280CR3-32D4. The router continued operating even after the FIB space was exhausted. Consequently, I expect the same behavior from the Arista 7280QR-C36, given that both use the same operating system. From: Jon Lewis via NANOG <nanog@lists.nanog.org> Date: Wednesday, 3 December 2025 at 22:41 To: nanog@lists.nanog.org <nanog@lists.nanog.org> Cc: nanog@lists.nanog.org <nanog@lists.nanog.org>, Jon Lewis <jlewis@lewis.org> Subject: Re: Arista 7280QR-C36 Viability
On Dec 1, 2025, at 8:57 AM, Mike Hammett via NANOG <nanog@lists.nanog.org> wrote:
At the risk of the Streisand effect, what am I missing about the Arista 7280QR-C36? It looks like a great router for small ISPs (great price, large packet buffers, good port selection, meaningful hardware routes). That said, it looks to be right on the border of DFZ viability. It supports "over 1M" routes, but I currently have about 1,036,824 in my route table. How much over is "over"? What happens in EOS when it goes over?
If you let it run out of FIB space, those routes that don’t make it into the FIB blackhole. FIB compression works quite well though, especially if you enable it. :) _______________________________________________ NANOG mailing list https://lists.nanog.org/archives/list/nanog@lists.nanog.org/message/O4TFCZWJ...