nanog mailing list archives
Re: 10GE TOR port buffers (was Re: 10G switch recommendaton)
From: Łukasz Bromirski <lukasz () bromirski net>
Date: Sat, 28 Jan 2012 03:32:17 +0100
On 2012-01-28 01:00, Joel jaeggli wrote:
C NSP has been full with threads about appalling microburst performance of the 6500 for years..And people who care have been using something other than a c6500 for years. it's a 15 year old architecture, and it's had a pretty good run, but it's 2012. An ex8200 has 512MB per port on non-oversuscribed 10Gig ports and 42MB per port on 1Gig ports. that's a lot of ram.
6500 has up to 256MB for non-oversubscribed 10GE ports. People complaining about microburst tend to use the cheapest 6704 linecard, and 'microbursts' are a problem seen across most of the products that don't even try to have a 1/12th of a 6500 history. Everyone has it's own problems, and as people already said, not understanding the way properly sized buffers influence the way TCP traffic behaves can do more harm than good. -- "There's no sense in being precise when | Łukasz Bromirski you don't know what you're talking | jid:lbromirski () jabber org about." John von Neumann | http://lukasz.bromirski.net
Current thread:
- Re: pontification bloat (was 10GE TOR port buffers (was Re: 10G switch recommendaton)), (continued)
- Re: pontification bloat (was 10GE TOR port buffers (was Re: 10G switch recommendaton)) Randy Bush (Jan 27)
- Re: pontification bloat (was 10GE TOR port buffers (was Re: 10G switch recommendaton)) Leo Bicknell (Jan 27)
- Re: pontification bloat (was 10GE TOR port buffers (was Re: 10G switch recommendaton)) Leo Bicknell (Jan 27)
- RE: pontification bloat (was 10GE TOR port buffers (was Re: 10G switch recommendaton)) George Bonser (Jan 27)
- Re: pontification bloat (was 10GE TOR port buffers (was Re: 10G switch recommendaton)) Jared Mauch (Jan 29)
- RE: pontification bloat (was 10GE TOR port buffers (was Re: 10G switch recommendaton)) George Bonser (Jan 29)
- RE: pontification bloat (was 10GE TOR port buffers (was Re: 10G switch recommendaton)) George Bonser (Jan 29)
- BDP discussion pointers: was: Re pontification bloat (was 10GE TOR port buffers (was Re: 10G switch recommendaton)) Jim Gettys (Jan 28)
- Re: BDP discussion pointers: was: Re pontification bloat (was 10GE TOR port buffers (was Re: 10G switch recommendaton)) Jim Gettys (Jan 28)
- Re: 10GE TOR port buffers (was Re: 10G switch recommendaton) Leo Bicknell (Jan 27)
- Re: 10GE TOR port buffers (was Re: 10G switch recommendaton) Łukasz Bromirski (Jan 27)
- Re: 10GE TOR port buffers (was Re: 10G switch recommendaton) Saku Ytti (Jan 28)
- Re: 10GE TOR port buffers (was Re: 10G switch recommendaton) Masataka Ohta (Jan 28)
- Re: 10GE TOR port buffers (was Re: 10G switch recommendaton) Saku Ytti (Jan 28)
- Re: 10GE TOR port buffers (was Re: 10G switch recommendaton) Masataka Ohta (Jan 28)
- Re: 10GE TOR port buffers (was Re: 10G switch recommendaton) Saku Ytti (Jan 28)