Patent ID: 8654632
Filing Date: 2014-02-18
Classification: H04L

Abstract:
1. A method for fast switching traffic in a hierarchical virtual private LAN service, for use in a User-facing Provider Edge (UPE) device, wherein said method comprises: assigning to each pair of primary pseudo wire and standby pseudo wire a logic port number to be shared by said primary pseudo wire and standby pseudo wire; when learning a media access control (MAC) address, associating an MAC address associated with a pair of primary pseudo wire and standby pseudo wire with the logic port number shared by the primary pseudo wire and standby pseudo wire; filling, in a logic port table, entries containing the following information for each logic port: a logic port number, a primary pseudo wire inbound-label, a standby pseudo wire inbound-label, a primary pseudo wire outbound-label, a standby pseudo wire outbound-label and information of leaving a public network; when the primary pseudo wire is active, setting the corresponding information of leaving the public network in the logic port table as: performing message forwarding by using the primary pseudo wire outbound-label and public network entries of the primary pseudo wire; and when the primary pseudo wire becomes inactive, setting the corresponding information of leaving the public network in the logic port table as: performing message forwarding by using the standby pseudo wire outbound-label and public network entries of the standby pseudo wire.