Hi all, Is there a working area within IETF that concentrates on Optical Networking, WDM and the likes. Essentially i am looking to identify possible topics for research in optical networking. It seems like work would need to be done on TCP protcol to make is work efficiently in an optical network. Now i seem to be able to come across a bunch of papers that discuss a similar problem in the context of satellite and other wireless networks where TCP needs to adapt to the lossy nature of the links. Has the community identified the problems the TCP needs addressing when the underlying network is optical with WDM? or is such an identification still an open issue? It was suggested to me that a big fat pipe problem has been discussed in the IETF in the case of optical networks. Could somebody point me to the appoprite sub mailing list or area that i need to go to for such questions. Thanks very much. sitaraman