Is this case practically unused? I have asked around for some production deployments that have Service Graph, and they all use PBR.
As far as I could understand, Service Graph (in case of Routed firewall and ADCs) makes ACI render connectivity and contract. The Routed firewall will be the gateway of the EPGs. However, this can be easily achieved by using Static Port or VMM association already, and since ACI is not the gateway, L2 BDs for those EPGs are sufficient. Same goes for ADCs.
With PBR though, the ACI can be the gateway, but still can redirect traffic to L4-L7 devices at will. It also has bypass mechanism (manually remove graph binding to contract subject, or SLA-based)
Is anyone still using Unmanaged Service Graph without PBR in their deployment?
Hello,I understand that Contracts in ACI that are enfored by the leafs are stateless ACL. When is an ACI Contract stateful?- as far as I know when using AVS/AVE?- what about when using Kubernetes/Openstack integration with ovs?
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