Symmetrical paths with hard bandwidth control. I don't see how this can be achieved without on-path signaling like RSVP. Sure, in theory, we could do something

Symmetrical paths with hard bandwidth control. I don't see how this can be achieved without on-path signaling like RSVP. Sure, in theory, we could do something similar with a PCEP centralized controller and SR extensions, but it is extremely difficult to tightly manage the bandwidth for all services from the controller. There will always be some inconsistency. While we can argue that this is a niche use case, it would still be interesting to hear of any instances where this type of service is addressed using SR.