[alto] Ato extension for representing SDN policies

[郭华明 <[e-mail]>]

Hi All


In SDN, each pair of source and destination network could have multiple policy rules. These rules maybe include source/destination address, protocols, ports, QoS, actions and so on. These information is
also important attributes of the path.     

I am thinking that if some policy information could be provided for applications in Alto, this is also helpful for traffic optimization.


I think there are two methods to do that in Alto.


1, Use a multiple cost types in Cost Maps (similar ideas in  draft-randriamasy-alto-multi-cost-10), add a new Cost Mode: policy, the Cost Metric use multiple fields, like <Protocol, Port, QoS>,  to represent a policy.


2, Add a new map service, like Policy Maps Service. In Policy Maps, applications can get the policy rule information.




Thanks.   


--

----------------
Best!




Huaming Guo


China Academy of Information and Communications Technology (CAICT)