Method for supporting SNCP over packet network
AssigneeOrckit IP, LLC
InventorsDaniel Cohn, Rafi Ram
Life of this patent
Estimating the term…
Abstract
A method is presented for supporting SNCP over a packet network connecting to two SDH sub-networks and transporting one or more SDH paths that are SNCP-protected in both SDH sub-networks. The packet network connects to each of two sub-network interconnection points by a working path and a protection path. The packet sub-network may provide the same type of path protection as an SDH sub-network using SNCP, while avoiding bandwidth duplication.
Claims17
A system for providing a path protection between first and second networks using a packet-based network, comprising first, second, third, and fourth Ethernet switches, each of the switches comprising in a respective enclosure:
- a first connector, a second connector, and a third connector;
- and
- a protection switch coupled between the first, second, and third connectors for transporting data traffic in a first mode between the first and second connectors and in a second mode between the first and third connectors,
- wherein each of the Ethernet switches is configurable to set a respective Pseudo-Wire (PW) connection over the packet-based network with at least one another Ethernet switch,
- wherein the first connectors of the first and second Ethernet switches are connectable to the first network,
- wherein the first connectors of the third and fourth Ethernet switches are connectable to the second network,
- wherein the first and third Ethernet switches are configured to set a first Pseudo-Wire (PW) connection over the packet-based network between the second connector of the first Ethernet switch and the second connector of the third Ethernet switch,
- wherein the first and fourth Ethernet switches are configured to set a second Pseudo-Wire (PW) connection over the packet-based network between the third connector of the first Ethernet switch and the second connector of the fourth Ethernet switch;
- wherein the second and third Ethernet switches are configured to set a third Pseudo-Wire (PW) connection over the packet-based network between the second connector of the second Ethernet switch and the third connector of the third Ethernet switch,
- wherein the second and fourth Ethernet switches are configured to set a fourth Pseudo-Wire (PW) connection over the packet-based network between the third connector of the second Ethernet switch and the third connector of the fourth Ethernet switch, and
- wherein when the first connectors of the first and second Ethernet switches are connected to the first network and the first connectors of the third and fourth Ethernet switches are connectable to the second network, at least part of the protection switches in the Ethernet switches are respectively set to be in the first or second mode so that there is at least one data path between the first and second networks in case of a failure in any one of the Ethernet switches or in any one of the Pseudo-Wire (PW) connections.
Dependencies are inferred from the claim text.