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 versión: Super Webcam, voz, caritas animadas, y más > #161;Gratis! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71946&t=71937 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
