On Wed, 13 Sep 2000, Scott Michel wrote:
On Tue, 12 Sep 2000, RJ Atkinson wrote:
Anyone out there have any Cisco GigE operational experience? I've got a customer who's evaluating GigE to 100 switched Ethernet, and they want a homogeneous vendor network (I don't know why, I just help them write the trade study...) So far, there's a huge question about Cisco GigE to 100 switched performance and I was wondering if anyone's willing to cough up numbers.
What sort of numbers are you after ?
Well, given the customer, often the numbers their looking for are pretty nebulous and often not as well defined as anyone'd like, but getting a customer's requirements are usually that way to begin with.
Basically, they want to be all Cisco, contemplating GiGE fiber for their backbone, with switched 100 to the desktop. The numbers they're interested in are number of sustainable 100 ports to GigE port. With a 45Gbs backbone quoted for the Cisco box, that would appear to be pretty limited.
If they're only feeding it with 45Mb/s, the GigE backbone will be MUCH MORE than sufficient, even if it were to only operate at 1/5 optimal. The GigE backbone will support about 100Mb/s ports blasting everything they can. In the "real world", If you could expand nearly infinately given the following configuration: DS3 --> Router --GigE--> GigE-Switch | | | | | | | | | |----GigE-->10/100-Switch | | | |------GigE-->10/100-Switch | | |--------GigE-->10/100-Switch | |----------GigE-->10/100-Switch |---and on and on and on --- John Fraizer EnterZone, Inc -- Support your government, give Echelon / Carnivore something to parse -- classfield top-secret government restricted data information project CIA KGB GRU DISA DoD defense systems military systems spy steal terrorist Allah Natasha Gregori destroy destruct attack democracy will send Russia bank system compromise international own rule the world ATSC RTEM warmod ATMD force power enforce sensitive directorate TSP NSTD ORD DD2-N AMTAS STRAP warrior-T presidental elections policital foreign embassy takeover --------------------------------------------------------------------------