Hi Robert, From: Robert Raszuk <[email protected]> Date: Thursday, September 16, 2021 at 4:23 PM To: Acee Lindem <[email protected]> Cc: Peter Psenak <[email protected]>, Linda Dunbar <[email protected]>, Tony Li <[email protected]>, "[email protected]" <[email protected]>, Bruno Decraene <[email protected]>, "Acee Lindem (acee)" <[email protected]> Subject: Re: [Lsr] draft-ietf-lsr-flex-algo
Acee, Wide communities actually are designed to help operators in their tasks. I am not sure why you brought it here. I only mentioned wide communities in context of them being, IMO, a mechanism that could potentially be used to create an order of magnitude more complexity than flex algo… But you are right, we don’t want to discuss it here. Besides please observe that communities are optional attributes. Lack of support on any BGP speaker will not break things or cause a permanent loop by design. Lack of support for flex algorithm or a particular flex algorithm will not break things either. Thanks, Acee Thx R. On Thu, Sep 16, 2021 at 10:16 PM Acee Lindem (acee) <[email protected]<mailto:[email protected]>> wrote: Hi Robert, From: Robert Raszuk <[email protected]<mailto:[email protected]>> Date: Thursday, September 16, 2021 at 5:34 AM To: Peter Psenak <[email protected]<mailto:[email protected]>> Cc: Linda Dunbar <[email protected]<mailto:[email protected]>>, Tony Li <[email protected]<mailto:[email protected]>>, "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>>, Bruno Decraene <[email protected]<mailto:[email protected]>>, Acee Lindem <[email protected]<mailto:[email protected]>>, "Acee Lindem (acee)" <[email protected]<mailto:[email protected]>> Subject: Re: [Lsr] draft-ietf-lsr-flex-algo I believe flex-algo with additional constraints would be sufficient. Aren't we putting too much operational complexity to the operators ? The architecture supports it additional constraints. Nobody says they have to be used. This is an interesting comment coming from the originator of https://www.ietf.org/archive/id/draft-ietf-idr-wide-bgp-communities-05.txt 😉 How can anyone practically assure that such constraints will be understood across a zoo of software versions and various implementations ? IIRC, only routers supporting the FAD will participate in the flex algorithm computation. I’ll defer to the authors for elaboration as I’m busy with something else right now. Thanks, Acee For well known metrics it could be ok - but for new metrics and selective use in FAD I am afraid this is going to be a pandora box. Best, R.
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