nanog mailing list archives

Re: Route optimization using GPUs?


From: Rubens Kuhl <rubensk () gmail com>
Date: Thu, 5 Dec 2024 15:20:50 -0300

Actually, some kind of content addressable memory looks more promising
for increasing update throughput than GPUs.


Rubens

On Thu, Dec 5, 2024 at 1:13 PM Drew Weaver <drew.weaver () thenap com> wrote:

So back in the.. hell I don’t know like… early 2010s there was a push for ‘route optimization’ from products like 
RouteScience and the Avaya CNA and more recently whatever Noction is doing.



The big pain point for this technology at the time was that it could only optimize the top N egress routes due to how 
many probes it could send out and how many results it could process.



It seems like now with a modest GPU in a router you could pretty easily ‘optimize’ [to the extent that you believe 
this technology worked] pretty much the whole routing table.



We used these tools extensively back then and they actually worked pretty well in most cases. The biggest issue we 
ran into was people complaining that we pinged their IP addresses… which now a days seems like a great worst problem 
to have.



Anyway is anyone doing any work on implementing GPUs into the BGP decision making process? Seems like a no brainer.



-Drew




Current thread: