Hi Richard, 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.
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Best!
Huaming Guo
China Academy of Information and Communications Technology (CAICT)
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