[Idr] Solicit feedbacks on introducing template to SR Policy architecture

["Dongjie (Jimmy)" <[e-mail]>]

Dear all,

A few month ago, draft-zhang-idr-sr-policy-template was presented at an interim meeting of IDR WG, and on the meeting there was suggestion that the architecture part of introducing template to SR Policy needs to be discussed in SPRING. Hence we would like to solicit attention and opinions from SPRING WG on this topic.

As described in the IDR draft, a template consists of a set of attributes and functions which can be associated with an SR Policy and its candidate paths. Some examples of the attributes and functions are:

- BFD and its parameters
- protection
- in-situ performance measurement
- traffic statistics
- etc.

The content of a template can be defined by an operator and then provided to both the controller and the network devices via management interfaces. A template may be used only on a specific headend node, or it may be used on multiple headend nodes in the network.

For the instantiation of an SR Policy, only the template ID needs to be carried as one of the attributes of the SR Policy in the control protocols, such as BGP and PCEP. Thus the extensions to the control protocols are straightforward. Please note for PCEP there is a draft proposing similar concept and extensions: draft-alvarez-pce-path-profiles.


Any comments and considerations on introducing template to the SR Policy architecture would be appreciated.

Best regards,
Jie (on behalf of the coauthors)