This is to inform everyone that routing between the US and most UK networks (along with several other European networks) will transition from the NASA Science Internet (NSI) to the Sprint/ICMnet today (Wed, Oct. 13) at noon EDT. There will be about a 10-15 min interruption in service while the multiplexers and routers are reconfigured. The trans-Atlantic link speed will remain at 1.024Mb. There are a total of 475 networks which will be affected by this change. The new primary path will be via AS 1800. A complete list of the networks involved is available via anonymous ftp from nsipo.nasa.gov:nsi/uk-fatpipe.cutover. Thanks to Merit and Sprint for making this easy. If there are any questions or problems, please send me mail. Thanks, Jeff