I have a scenario where SR can be beneficial, but the network is multi-vendor (Chinese) and Cisco ASR9K Core is CRS-3. From where I can get more detailed technical information that can be useful to deploy only SR at phase-1 without SDN Controller as the applications are static and traffic patterns are static, we don't see an immediate need for SDN controller to do the fancy stuff. Appreciate if someone can provide more technical explanation with the platforms and inter-operability with Chinese vendors..