nanog mailing list archives
Re: switch speed question
From: David Barak <thegameiam () yahoo com>
Date: Wed, 25 Feb 2009 05:48:04 -0800 (PST)
Doesn't that assume that the communicarion is unidirectional? If two hosts are exchanging 1Gbps flows, the traffic across the bus will be 2Gbps, right? And of course, this doesn't include any bus-intensive operations like multicast or things which require cpu processing - those can consume a lot more resources than the input rate of the port. -David Barak Tom Storey wrote:
Not every bit in results in just one bit out. Broadcast, multicast, flooding for unknown MACs (or switching failures), ...They were talking about a simple scenario where a bit that enters a port will leave a port. With 24 gigabit ports, for all intents and purposes, you will only ever have 24 gigabits at the most traversing the backplane.
Current thread:
- switch speed question Deric Kwok (Feb 23)
- Re: switch speed question Brian Feeny (Feb 23)
- RE: switch speed question Bruce Grobler (Feb 24)
- Re: switch speed question Eric Gearhart (Feb 24)
- Re: switch speed question Tony Varriale (Feb 24)
- Re: switch speed question Roy (Feb 24)
- Re: switch speed question Chris Adams (Feb 24)
- Re: switch speed question Eric Gearhart (Feb 24)
- RE: switch speed question Holmes,David A (Feb 24)
- <Possible follow-ups>
- Re: switch speed question deleskie (Feb 24)
- Re: switch speed question Tom Storey (Feb 25)
- Re: switch speed question David Barak (Feb 25)
- Re: switch speed question Tom Storey (Feb 25)
- Re: switch speed question Nathan Ward (Feb 25)
- Re: switch speed question Dave Israel (Feb 25)
- Re: switch speed question David Barak (Feb 25)