LANE defines three (potential) mechanisms which the LE Client (LEC) will use to find the LE Configuration Server (LECS); it then setups a VCC to the LECS in order to send a Configure-Request and receive a Configure-Response; the information in the Configure-Request/Reply allows the LEC to bootstrap itself with configuration information.
The three mechanisms are: an ILMI MIB object containing the ATM address of the LECS, a well-known ATM address (which we hope will become an anycast address in future) for the LECS, and a PVC with well-known VPI/VCI values (VPI=0, VCI=17). The LEC tries each of these in turn until one of them works.
(Thanks to Keith McCloghrie for the above text which appeared on the IP over ATM mailing list)