METHOD AND APPARATUS FOR ISOLATING THE DIFFERENT VIRTUAL LOCAL AREA NETWORK SERVICES

摘要

A method and apparatus for isolating the different virtual local area network services. The method mainly includes : assigning the identification information to the VLAN (virtual local area network) service instances accessed to the shortest path bridge network; transferring the identification information of the VLAN service instance along the root port direction of the different spanning trees in the shortest path bridge network by the access network bridge of the VLAN service instance; identifying the accessed VLAN service instance according to the identification information received from the root port direction of the spanning tree by theaccess network bridge in the shortest path bridge network. By use of the method, it can be realized to isolate the different VLAN services in the shortest path bridge network, thereby it is ensured that the VLAN service data packet is propagated in the range of the VLAN.