Cross-stratum optimization protocol
An apparatus comprising an application cross-stratum optimization (CSO) gateway (ACG) coupled to an application layer that handles a plurality of servers, a network CSO gateway (NCG) coupled to a network layer that handles a plurality of network nodes and configured to communicate with the ACG using a CSO protocol (CSOP), and a CSO interface established between the ACG and the NCG that enables the exchange of a plurality of CSOP messages to allow joint application-network resource allocation, provisioning, and optimization. Also disclosed is a network apparatus implemented method comprising sending a user profile from a user plane to an application plane, sending an application profile from the application plane to a network plane via a CSO interface between an ACG and a NCG, and sending network capability information from the network plane to the application plane via the CSO interface.
1. A computer implemented method comprising:
sending a resource query from a service stratum gateway with a hardware processor to a transport stratum gateway via a cross-stratum optimization (CSO) interface using a cross-stratum optimization protocol (CSOP) between the service stratum gateway and the transport stratum gateway to enable the different functionalities of the application cross-stratum gateway (ACG) and network CSO gateway (NCG) for related communications, including signaling, messaging, and information exchange,
wherein the service stratum gateway collectively handles communications from a plurality of servers managing applications in a service stratum and the transport stratum gateway collectively handles CSOP communications from a plurality of network nodes managing a transport network wherein the CSOP communications include CSO messages that comprise path estimation, path reservation, network topology or virtual machine topology query;
exchanging status data for monitoring, controlling, and managing the transport network across the cross-stratum optimization (CSO) interface for provisioning application, network congestion, failure information utilizing at least bandwidth profile object used to specify the required bandwidth for a path and comprises a transport layer field, a plurality of flags, an asymmetric bandwidth indicator bit, a reserved field, a downstream of bi-directional bandwidth field, and an upstream bandwidth field; and
transmitting a reservation request from the service stratum gateway to the transport stratum gateway via the cross-stratum optimization (CSO) interface to reserve a guaranteed bandwidth across the transport network, the service stratum gateway and the transport stratum gateway being at least partially implemented in hardware, the reservation request including a path object having a type length value (TLV) field, the TLV field carrying a path identifier identifying a path to be reserved.
2. The method of claim 1 , wherein the resource query comprises a source, a destination, a bandwidth, a maximum latency, and a maximum jitter.
3. The method of claim 1 , wherein the reservation request comprises a service profile indicating a quality of service (QoS) an application requires of the transport network.
4. The method of claim 1 , further comprising receiving a Keep Alive message at the service stratum gateway from the transport stratum gateway.
5. The method of claim 1 , wherein the reservation request is sent to setup a new path in a transport stratum or modify an existing path in the transport stratum.
6. The method of claim 5 , wherein the resource query is sent to get a status of resources in the transport stratum to perform a cross stratum optimization calculation.
7. The method of claim 6 , further comprising receiving a response message at the service stratum gateway from the transport stratum gateway in response to the resource query, the response message comprising a status of resources in the transport stratum.
8. The method of claim 1 , wherein the reservation request comprises a service profile object generated in the service stratum and indicating data related to the request.
9. The method of claim 8 , wherein the reservation request comprises an object indicating a requested bandwidth.
10. The method of claim 8 , wherein the reservation request comprises an object indicating a bi-directional path constraint.
11. The method of claim 8 , wherein the reservation request comprises an object indicating a unidirectional path constraint.
12. The method of claim 8 , wherein the reservation request comprises an object indicating a request for a 1+1 protection across a transport stratum.
13. The method of claim 8 , wherein the reservation request further comprises performance constraint object indicating constraints for the reservation request.
14. The method of claim 13 , wherein the performance constraint object indicates a jitter bound for the request.
15. The method of claim 13 , wherein the performance constraint object indicates a latency delay bound.
16. A service stratum gateway comprising:
a transmitter configured to send a resource query to a transport stratum gateway via a cross-stratum optimization (CSO) interface using a cross-stratum optimization protocol (CSOP) between the service stratum gateway and the transport stratum gateway, wherein the service stratum gateway collectively handles communications from a plurality of servers managing applications in a service stratum and the transport stratum gateway collectively handles CSOP communications from a plurality of network nodes managing a transport network, wherein the CSOP communications involving CSO messages that comprise path estimation, path reservation, network topology or virtual machine topology query;
a receiver configured to receive status data for monitoring, controlling, and managing the transport network across the cross-stratum optimization (CSO) interface for provisioning application, network congestion, failure information utilizing at least bandwidth profile object used to specify the required bandwidth for a path and comprises a transport layer field, a plurality of flags, an asymmetric bandwidth indicator bit, a reserved field, a downstream of bi-directional bandwidth field, and an upstream bandwidth field; and
a hardware processor coupled to the transmitter and receiver and configured to cause the transmitter to transmit a reservation request to the transport stratum gateway via the cross-stratum optimization (CSO) interface to reserve a guaranteed bandwidth across the transport network, the reservation request including a path object having a type length value (TLV) field, the TLV field carrying a path identifier, identifying a path to be reserved in the transport network.
17. The service stratum gateway of claim 16 , wherein the reservation request is sent to setup a new path in a transport stratum or modify an existing path in the transport stratum.
18. The service stratum gateway of claim 16 , wherein the resource query is sent to get a status of resources in a transport stratum to perform a cross stratum optimization calculation.
19. The service stratum gateway of claim 16 , wherein the receiver is further configured to receive a response message from the transport stratum gateway via the interface in response to the resource query, the response message comprising a status of resources in a transport stratum.
20. The service stratum gateway of claim 16 , wherein the resource query comprises a source, a destination, a bandwidth, a maximum latency, and a maximum jitter.