Hi friends, It's said that one of the chief advatange of ATM supporting IP traffic is the capability to fulfil traffic engineering(TE) on the base of PVP/PVC, so that there isn't link under-utilized while some are over-utilized. Then my question is: has any real world IP/ATM (or IP/FR) network carried out traffic engeering? How they do it? (There seems not any standard protocol to do so, then do they rely on some off-line performance optimizing tools, which is a little slow in reaction to the network traffic change?) Thanks for any comments. regards, Yu Ning. _____________________________________________* Yu Ning ATM R&D Center of BUPT (Beijing U. of Posts&Telecom) Beijing (ZIP:100876, MBox:147#), P.R.China yuning@mindless.com Ideas reflect view points of my own,:-) _____________________________________________