H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/437 (2006.01) H04Q 11/04 (2006.01) H04L 12/56 (2006.01)
Patent
CA 2401433
In prior art, the provision of back-up circuits for ATM cells in ring-type structures is efficiently controlled using linear structures. According to the invention, this function is extended to ring-type MPLS network architectures as follows: linear MPLS structures are formed into a ring-type MPLS structure and two unidirectional MPLS connections which respectively connect the same switching devices and run in opposite directions are logically associated to one another, whereby the operating link and the back-up link are routed via different physical paths.
Dans l'état de la technique, la commutation de remplacement de cellules MTA dans des structures en boucle est gérée de manière efficace grâce à l'utilisation de structures linéaires. L'invention vise à transférer ce mode de fonctionnement sur des architectures de réseaux MPLS en boucle. A cet effet, les structures MPLS linéaires sont transformées en une structure MPLS en boucle et deux liaisons MPLS unidirectionnelles opposées sont associées logiquement, chacune d'elles reliant les mêmes dispositifs de transmission. Les segments de service et les segments de remplacement suivent des trajectoires physiques différentes.
Aktiengesellschaft Siemens
Nokia Siemens Networks Gmbh & Co. Kg
Sim & Mcburney
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