Re: ATM Bandwith [7:71937]
Hi Levent, I thanks your explanation. It was very good. Best Regards. Levent Ogut wrote: Hi, ATM technology is based on 53 byte cells. Also ATM has a 5 byte header per cell. So your payloads length can be 48 bytes per ATM cell. with a basic calculation, for an ip traffic on 34Mb ATM link : 48 (payload includes the ip header) / 53 (total bytes can be trasnfered in a cell) equals to 0.90566. That means maximum %90.56 of your ATM link can be ip traffic (including the ip headers) so 34Mb * 0.90566 = 30.7925 Mb can be the ip traffic. and also consider that you have ip headers in that traffic, if you calculate the actual payload , it is lesser than that. hope that helps, Gerard Torin wrote: Hi guys, Anybody know how is built the ATM4S Bandwith?. For example, In ATM`s link of 34Mbps, Is true that 4Mbps is just only header?, I ask that, because actually my company has it. But we don4t reach the maximun bandwith of 34Mbps. Yesterday, we did stress test in the link and just only reach 30Mbps. I thanks any comment. - Yahoo! Messenger Nueva versisn: Super Webcam, voz, caritas animadas, y mas #161;Gratis! Yahoo! Messenger Nueva versioacute;n: Super Webcam, voz, caritas animadas, y maacute;s #161;Gratis! Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=71954t=71937 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: ATM Bandwith [7:71937]
Hi Dom, we did test with TFY aplication, generating a burst traffic of 3000 bytes UDP. This aplication stressed the link, but I don`t undestard why not reach the maximun bandwith permited: 34Mbps. What do you think about this test? Is right? Dom wrote: -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Gerard Torin Sent: 05 July 2003 19:06 To: [EMAIL PROTECTED] Subject: ATM Bandwith [7:71937] Hi guys, Anybody know how is built the ATM4S Bandwith?. For example, In ATM`s link of 34Mbps, Is true that 4Mbps is just only header?, I ask that, because actually my company has it. But we don4t reach the maximun bandwith of 34Mbps. Yesterday, we did stress test in the link and just only reach 30Mbps. I thanks any comment. Please supply more details. How did you test and with what size packets? Cell tax (the overhead of breaking your data down in 53byte chunks) might account for hat you are observing. Best regards, Dom Stocqueler SysDom Technologies Visit our website - www.sysdom.org Yahoo! Messenger Nueva versioacute;n: Super Webcam, voz, caritas animadas, y maacute;s #161;Gratis! Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=71953t=71937 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
ATM Bandwith [7:71937]
Hi guys, Anybody know how is built the ATM4S Bandwith?. For example, In ATM`s link of 34Mbps, Is true that 4Mbps is just only header?, I ask that, because actually my company has it. But we don4t reach the maximun bandwith of 34Mbps. Yesterday, we did stress test in the link and just only reach 30Mbps. I thanks any comment. - Yahoo! Messenger Nueva versioacute;n: Super Webcam, voz, caritas animadas, y maacute;s #161;Gratis! Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=71937t=71937 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
