Subject: [Pce] Comments on QoS with flowspec (draft-ietf-pce-flowspec-01.txt)

From: Olivier Dugeon <[email-masked]>
Date: Fri, 20 Jul 2018 17:57:44 +0200

Dear authors,

After reading your draft-ietf-pce-flowspec-01.txt, I would know if it is possible to also handle some QoS  policy configuration in conjunction with the flowspec.

In fact, when you configure a TE tunnel with some reserved bandwidth and/or a given Class Type and you specify which packets could belong to this tunnel, in general, you also associate corresponding policy configuration. In particular, you would associated to the tunnel a given Class of Service, thus a given DSCP marking/queuing, and if you reserved some bandwidth, you would configure some rate limit to be sure that no excess traffic belongs to this tunnel. This give to operational entity a complete control over the traffic that belongs to this tunnel.

So, do you think it is feasible to add two more bits in the Flow Spec Object to specify if the PCC must associate a Rate Limiter and/or queuing policy? It is not necessary to specify the bandwidth value, nor the Class Type as there have been provided previously (during the tunnel computation through PCReq message or tunnel setup through PCInitiate message), so only 2 more bits are necessary.

Regards

Olivier