Hi Kevin, In steady state, there will be a scale impact of enabling stability measurement. However, it can be fairly small if the implementation is efficient. In our prototype, we saw less than 3% impact on CPU performance (and hence, little-to-no impact on scale) when we enabled this measurement (we monitored both, timestamps and sequence numbers). Best,Ashesh
> From: [email protected] > To: [email protected]; [email protected] > Subject: RE: Questions on draft-ashesh-bfd-stability-00.txt > Date: Mon, 30 Mar 2015 13:38:15 +0000 > > Hi Santosh, > > Thanks for your responses. Will look the updated version. > On my last question, yes it is about scale impact in steady state. > > Kevin > > -----Original Message----- > From: Santosh P K [mailto:[email protected]] > Sent: Saturday, March 28, 2015 10:45 AM > To: D'SOUZA, KEVIN L; '[email protected]' > Subject: RE: Questions on draft-ashesh-bfd-stability-00.txt > > Hello Kevin, > Thanks for your comments. Please see my inline reply. > > >1) Could you clarify if interop will be supported between these features and > >a BFD instantiation that does not support these features > > Yes, it should have a backward compatibility. We will update document on > backward compatibility section with use cases. > > > 2) Can you specify that these features will be optional for an > > implementation and some method should be provided to turn this capability > > off if needed > > This is optional and it might be turned off by configuration? I think this is > implementation detail but we could have recommendation in draft. > > >3) Can you clarify in the scope the relationship between the measurements > >that one would obtain with this method vs other traditional methods to > >measure >such criteria (e.g., CFM, TWAMP). My concern is if this feature > >produces measurements that are different from the traditional methods, then > >it would be >difficult to reconcile them in a production environment > > BFD will not replace CFM or TWAMP and it is not equipped to do so. We are > updating the document with use cases and other recommendation please stayed > tuned. > > > 4) How would this impact the scale of the BFD protocol? > > Do you mean scale impact in steady state? > > > Thanks > Santosh P K >
