Patent ID: 8804749
Filing Date: 2014-08-12
Classification: H04L,H04W

Abstract:
1. A communications method through a pseudo-wire set up between first and a second provider edge nodes of a packet-switched network, through at least one router of the packet-switched network and according to a label distribution protocol, a label being associated with a node and a data communication session, the first provider edge node being downstream of the router and the second provider edge node being upstream thereof, said method comprising, during a phase of transmission of data through the pseudo-wire in accordance with at least one label and first parameters defining a first data communication session set up through the pseudo-wire between the first and second provider edge nodes: receiving, by the second provider edge node, a set up message of a second data communication session through said pseudo-wire, the set-up message comprising a new label and second parameters defining the second data communication session; sending, by the second provider edge node, to the router, a notification message comprising the new label and the second parameters defining the second data communication session, the transmission of data continuing through said pseudo-wire in accordance with the second data communication session; after reception of the notification message comprising the new label and the second parameters defining the second data communication session, sending, by the router, an upstream neighbour equipment, or upstream equipment, a message requesting deletion of the at least one label and the first parameters defining the first data communication session; and sending, by the router, a downstream neighbour equipment, or downstream equipment, the notification message; and on reception of the notification message by the downstream equipment, configuring a switching table of the downstream equipment after which the at least one label and the first parameters defining the first data communication session are deleted from the switching table.