Switching Device and Relay System

摘要

A core switching device has a virtual path table and an address table, and selectively performs a PBB operation and a virtual path operation. The virtual path table retains a correspondence relation between a service instance identifier and two ports in a plurality of ports set in advance. The address table retains a correspondence relation between the plurality of ports and an encapsulation address. The core switching device relays an encapsulated frame based on the address table in the PBB operation and relays an encapsulated frame containing the service instance identifier retained in the virtual path table between the two ports retained in the virtual path table in the virtual path operation.

主权项

1. A switching device which is placed in a PBB network in which relay based on a PBB standard is performed and relays an encapsulated frame,
wherein the encapsulated frame contains a service instance identifier, a backbone VLAN identifier and an encapsulation address based on the PBB standard, the switching device includes: a plurality of ports; a virtual path table which retains a correspondence relation between a first identifier and two ports in the plurality of ports set in advance; an address table which retains a correspondence relation between the plurality of ports and the encapsulation address; and a relay processing unit which selectively performs a PBB operation in which the encapsulated frame is relayed based on the address table and a virtual path operation in which the encapsulated frame containing the first identifier retained in the virtual path table is relayed between the two ports retained in the virtual path table, and the first identifier is the service instance identifier or an internal VLAN identifier assigned inside the device in association with the service instance identifier.