I believe WorldCom is using the BSTDX-9000/CBX-500 switches on their network. The problems that they are having sound suspiciously like what would happen to a network when it exceeded the 200 node limit on some of Ascend's older code. Perhaps they haven't got around to going to the new code release? Alan Baird Williams Network Architecture Lab -----Original Message----- On Mon, 9 Aug 1999, Alan Hannan wrote: What frame relay switch is causing MCI/Worldcom such grief?