Service OAM virtualization
A SOAM virtualization system for a network having at least first and second maintenance entities coupled to each other comprises a network controller coupled to at least one of the first and second maintenance entities through a tunnel for virtualizing a SOAM network function on the at least one of the first and second maintenance entities to which the network controller is coupled. The network controller may be coupled to the first and second maintenance entities through first and second tunnels, respectively. The first maintenance entity may an originator device, and the second maintenance entity may be a destination device, with the network controller virtualizing the SOAM network function on both devices. The network controller may send a packet containing a tunnel header and a SOAM frame via the first tunnel to the originator device, which then sends the packet containing the SOAM frame to the destination device.
1. A system for operating a Service, Operation, Administration and Maintenance (SOAM) virtualization system for a network, said system comprising
a network controller, coupled to a first maintenance entity through a first tunnel;
said network controller generates a first tunnel packet comprising a tunnel header, a first SOAM frame and metadata specifying one or more operations to perform on one or more parameters of said SOAM frame;
said first maintenance entity receives said first tunnel packet over said first tunnel and modifies said parameter of said first SOAM frame by performing said one or more operations to produce a modified SOAM frame, said first maintenance entity forwards said first tunnel packet comprising said modified SOAM frame to a second maintenance entity over said network;
said second maintenance entity, in response to receiving said first tunnel packet comprising said modified SOAM frame, transmits a second tunnel packet comprising a reply SOAM frame to said first maintenance entity;
said first maintenance entity receiving said second tunnel packet comprising said reply SOAM frame and forwarding said reply SOAM frame to said network controller through said first tunnel; and
said network controller processing results of said second tunnel packet comprising said reply SOAM frame.
2. The system of claim 1 , wherein said second maintenance entity generates said reply SOAM frame.
3. The system of claim 1 , wherein:
said second maintenance entity forwards said tunnel packet comprising said modified SOAM frame to a second network controller over a second tunnel, and said second network controller generates said second tunnel packet comprising said reply SOAM frame; and
said second maintenance entity receives said second tunnel packet comprising said reply SOAM frame from said second network controller over said second tunnel.
4. The system of claim 3 , wherein said first network controller and said second network controller are the same.
5. The system of claim 1 , wherein said SOAM frame comprises a first payload and said modified SOAM frame comprises a second payload, and the first payload and the second payload are the same.
6. A system of operating a Service, Operation, Administration and Maintenance (SOAM) virtualization system for a network, said system comprising
a network controller, coupled to a first maintenance entity through a tunnel;
said network controller generates a tunnel packet comprising a tunnel header, a SOAM frame and metadata specifying one or more operations to perform on a parameter of said SOAM frame;
said first maintenance entity receives said tunnel packet over said tunnel and modifying said parameter of said SOAM frame by performing said one or more operations to produce a modified SOAM frame, said first maintenance entity forwards said tunnel packet comprising said modified SOAM frame to a second maintenance entity over said network; and
said second maintenance entity forwards said tunnel packet comprising said modified SOAM frame to a second network controller over a second tunnel, said second network controller processing results of said modified SOAM frame.
7. The system of claim 6 , wherein said first network controller and said second network controller are the same.
8. The system of claim 6 , wherein said modified SOAM frame comprises a payload and said second maintenance entity forwards said modified SOAM frame without modifying said payload.
9. The system of claim 6 , wherein said first maintenance entity comprises a virtual port corresponding to a physical port on said network controller.