A METHOD OF PROVISIONING H-VPLS SERVICES IN A MULTI-DOMAIN MPLS NETWORK

摘要

A method is disclosed for provisioning loop free H-VPLS traffic service in a multi-domain MPLS network having interconnected domains. The method comprises: provisioning pseudo wires (PWs) for MPTMP services in each domain of the MPLS network; defining multiple Split Horizon Groups (SHGs) in the network, wherein each SHG corresponds to a domain, for the H-VPLS service traffic and for each specific node of the MPLS network, automatically assigning indications to SHG and the pseudo wires connected to the specific node, wherein the same indication is assigned to all pseudo wires belonging to the same group (SHG-N), and wherein the step of assigning is characterized in that when traffic belonging to H-VPLS service crosses a border network node located between two interconnected domains, the SHG-N indication of PWs remains the same within a VPLS domain thereby preventing the service traffic from returning to the domain of origin.