Understanding verification manner, the data repeating installation, communicating the data

摘要

PROBLEM TO BE SOLVED: To easily carry out confirmation of understanding in core network of a provider without the use of a user side facility.;SOLUTION: An echo / reply of an understanding confirming packet is newly set to a type of an EoMPLS frame, and an understanding state of a virtual private network (VPN) having a VCID particularized by transmission / reception of the understanding confirming packet and a label, is confirmed between PE routers 11, 12 in the same core network 10.;COPYRIGHT: (C)2005,JPO&NCIPI