Patent ID: 8718092

Claim:
A communication network system in which a plurality of local-branch-site-line network switches accommodating a plurality of local-branch-site lines, respectively, and at least one data-center-site-line network switch accommodating at least one data-center-site line, are interconnected via a carrier network, comprising: a first bandwidth controller, disposed at each local-branch-site-line network switch, configured to limit a transmission bandwidth of each of inbound packets and/or outbound packets to a pre-selected local-branch-site-line bandwidth α, wherein the inbound packets flow from the instant local-branch-site-line network switch or other local-branch-site-line network switches, and the outbound packets flow to the instant local-branch-site-line network switch or other local-branch-site-line network switches; a second bandwidth controller, disposed at each local-branch-site-line network switch, configured to limit a transmission bandwidth of each of inbound packets and/or outbound packets to a pre-selected data-center-site-line bandwidth β broader than the local-branch-site-line bandwidth α, wherein the inbound packets flow from each of the at least one data-center-site-line network switch, and the outbound packets flow to the data-center-site-line network switch; and a third bandwidth controller, disposed at each of the at least one data-center-site-line network switch, configured to limit a transmission bandwidth of each of inbound packets and/or outbound packets to a pre-selected data-center-site-line bandwidth γ, wherein the inbound packets flow from the plurality of local-branch-site-line network switches, and the outbound packets flow to the plurality of local-branch-site-line network switches.