A packet router in a label switching system includes a logical router configuring module for logically dividing a label switching router (LSR) into a plurality of LSRs each having a label switching function, and a module for specifying, when setting a label switched path on the basis of an explicit route...http://www.google.es/patents/US7336648?utm_source=gb-gplus-sharePatente US7336648 - Label switching system
