nanog mailing list archives
Re: Mx204 alternative
From: Łukasz Bromirski <lukasz () bromirski net>
Date: Tue, 3 Sep 2019 09:24:25 +0200
Adam,
On 2 Sep 2019, at 19:42, adamv0025 () netconsultings com wrote: You nailed it, Actually very few line-cards or fabric-less boxes with (run to completion vendor chips) out there do line-rate at 64B packets nowadays. -with the advent of 100G the "line-rate at 64B" is pretty much not a thing anymore... Something to consider, not because one wants to push 64B packets at line-rate on all ports but because one needs to push IMIX through QOS or filters... and the card/box might simply not deliver.
But those are two completely different use cases. The fact that vendors (full disclosure - I work for Cisco) don’t want to optimize for 64 bytes forwarding is totally independent on how those architectures deal/manage to apply policies on the traffic. 64B traffic simply doesn’t happen apart from DDoS scenarios, so why bother at all? Customers anyway want to use dedicated anty-DDoS boxes, so apart from synthetic performance testing, pushing the architecture to be able to forward couple of mpps more just to cover the “64B” scenario means $ (sometimes $$$) just to satisfy requirement that’s usually simply not there. In other words, the fact that given architecture can’t forward "wire-rate" of 64B traffic doesn’t mean that it can’t apply QoS for IMIX pattern at wire-speed. Forwarding engine is usually different part of hardware than services, more often than not decisions are totally independent to speed up processing. -- Łukasz Bromirski CCIE R&S/SP #15929, CCDE #2012::17, PGP Key ID: 0xFD077F6A
Current thread:
- Re: Mx204 alternative, (continued)
- Re: Mx204 alternative Denys Fedoryshchenko (Sep 02)
- Re: Mx204 alternative Saku Ytti (Sep 02)
- Re: Mx204 alternative Mark Tinka (Sep 02)
- Re: Mx204 alternative Brandon Martin (Sep 02)
- Re: Mx204 alternative Ross Tajvar (Sep 02)
- Re: Mx204 alternative Raymond Burkholder (Sep 02)
- Re: Mx204 alternative Olivier Benghozi (Sep 02)
- RE: Mx204 alternative adamv0025 (Sep 02)
- Re: Mx204 alternative Saku Ytti (Sep 02)
- RE: Mx204 alternative adamv0025 (Sep 02)
- Re: Mx204 alternative Łukasz Bromirski (Sep 03)
- Re: Mx204 alternative Saku Ytti (Sep 03)
- RE: Mx204 alternative adamv0025 (Sep 03)
- Re: Mx204 alternative Saku Ytti (Sep 03)
- RE: Mx204 alternative adamv0025 (Sep 03)
- Re: Mx204 alternative Nick Hilliard (Sep 02)
- Re: Mx204 alternative Mark Tinka (Sep 02)
- RE: Mx204 alternative adamv0025 (Sep 02)
- Re: Mx204 alternative Mark Tinka (Sep 02)