nanog mailing list archives
Re: Jumbo frame Question
From: Saku Ytti <saku () ytti fi>
Date: Fri, 26 Nov 2010 19:55:31 +0200
On (2010-11-26 12:39 -0500), Valdis.Kletnieks () vt edu wrote:
That's only half the calculation. The *other* half is if you have gear that has a packets-per-second issue - if you go to 9000 MTU, you can move 6 times as much data in the same packets-per-second. Anybody who's ever had to trim a complicated ACL list because it saturated the CPU knows what I mean.
Academically speaking interesting topic, of course the actual time to copy the packet is not constant, so you are not going to see linear increase in bandwidth. It would be very nice to see graph of say VXR with long enough ACL to cap 1500B rate very low and then see results of different packet sizes of 3000, 6000, 9000. If this is something you regularly need to operationally consider, do you happen to have such numbers and if not would it be too much of work for you to provide the numbers? In my world, we've been running hardware lookup engines since 2003, so we really don't need to care about features affecting lookup speed. -- ++ytti
Current thread:
- Jumbo frame Question Harris Hui (Nov 26)
- Re: Jumbo frame Question Hank Nussbacher (Nov 26)
- Re: Jumbo frame Question Jon Meek (Nov 26)
- RE: Jumbo frame Question Richard Graves (RHT) (Nov 26)
- RE: Jumbo frame Question George Bonser (Nov 26)
- Re: Jumbo frame Question Saku Ytti (Nov 26)
- Re: Jumbo frame Question Valdis . Kletnieks (Nov 26)
- Re: Jumbo frame Question Saku Ytti (Nov 26)
- Re: Jumbo frame Question Saku Ytti (Nov 26)
- RE: Jumbo frame Question Brandon Kim (Nov 26)
- RE: Jumbo frame Question Mikael Abrahamsson (Nov 26)
- Re: Jumbo frame Question Randy Bush (Nov 26)
- RE: Jumbo frame Question George Bonser (Nov 26)
- Re: Jumbo frame Question Mikael Abrahamsson (Nov 26)
- Re: Jumbo frame Question John Kristoff (Nov 29)
- Re: Jumbo frame Question Jack Bates (Nov 29)
- Re: Jumbo frame Question Douglas Otis (Nov 29)
- need a contact Geo. (Nov 26)
- Re: Jumbo frame Question Joel Jaeggli (Nov 26)