Re: I-D Action: draft-ietf-bfd-yang-06.txt
"Acee Lindem (acee)" <acee@cisco.com> Fri, 28 July 2017 02:34 UTC
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From: "Acee Lindem (acee)" <acee@cisco.com>
To: "Reshad Rahman (rrahman)" <rrahman@cisco.com>, Yingzhen Qu <yingzhen.qu@huawei.com>, Jeffrey Haas <jhaas@pfrc.org>, "rtg-bfd@ietf.org" <rtg-bfd@ietf.org>
CC: "draft-ietf-bfd-yang@ietf.org" <draft-ietf-bfd-yang@ietf.org>, "draft-ietf-ospf-yang@ietf.org" <draft-ietf-ospf-yang@ietf.org>
Subject: Re: I-D Action: draft-ietf-bfd-yang-06.txt
Thread-Topic: I-D Action: draft-ietf-bfd-yang-06.txt
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Date: Fri, 28 Jul 2017 02:34:52 +0000
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References: <149885255897.4584.3006333522740435620@ietfa.amsl.com> <20170705162103.GQ2289@pfrc.org> <D596866E.2C3552%rrahman@cisco.com> <594D005A3CB0724DB547CF3E9A9E810B5227CF@dfweml501-mbb> <D59904F6.2C51B4%rrahman@cisco.com> <D59FB0AD.BA38A%acee@cisco.com> <D59FB38C.2CE83D%rrahman@cisco.com> <D59FB594.BA3A0%acee@cisco.com> <D59FB7D2.2CE8F1%rrahman@cisco.com> <D59FB934.BA3C3%acee@cisco.com> <D59FBE2A.2CEA06%rrahman@cisco.com>
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Hi Reshad, Ok - I see now. I was looking at the wrong xxxx-base-cfg-parms groupings. Fewer similar grouping and modules will be better ;^) Thanks, Acee On 7/27/17, 9:03 PM, "Reshad Rahman (rrahman)" <rrahman@cisco.com> wrote: >Hi Acee, > >What I see @ >https://github.com/jhaas-pfrc/ietf-bfd-yang/blob/master/src/yang/ietf-bfd- >t >ypes.yang: >1) bfd-client-base-cfg-parms has leaf enabled only. BTW this grouping is >defined twice, this will be fixed when I get rid of ietf-bfd-clients.yang >2) bfd-grouping-base-cfg-parms has multiplier/timers. > >Let me get rid of the client module and have everything in the types >module. > >I am not sure why you’re not seeing something different. > >Regards, >Reshad. > > > >On 2017-07-27, 3:40 PM, "Acee Lindem (acee)" <acee@cisco.com> wrote: > >>Hi Reshad, >> >>On 7/27/17, 3:35 PM, "Reshad Rahman (rrahman)" <rrahman@cisco.com> wrote: >> >>>Hi Acee, >>> >>>1) I’ll see if others chime in on this but I am fine with having the >>>client grouping in ietf-bfd-types.yang. >>>2) bfd-grouping-common-cfg-parms has much more than just the >>>multiplier/timers that the IGPs need. It also has BFD specific stuff >>>(demand-mode, BFD auth) which IMO has no business outside of BFD. >> >>Agreed. >> >> >>>bfd-grouping-base-cfg-parms has only the multiplier/timers. >> >>Perhaps, the addition of multiplier/timers to bfd-grouping-base-cfg-parms >>isn’t pushed to GitHub yet. This version >>https://github.com/jhaas-pfrc/ietf-bfd-yang/blob/master/src/yang/ietf-bfd >>- >>t >>ypes.yang only has the enabled leaf. >> >> >>Thanks, >>Acee >> >> >>> >>>Regards, >>>Reshad. >>> >>> >>> >>>On 2017-07-27, 3:30 PM, "Acee Lindem (acee)" <acee@cisco.com> wrote: >>> >>>>Hi Reshad, >>>> >>>>On 7/27/17, 3:19 PM, "Reshad Rahman (rrahman)" <rrahman@cisco.com> >>>>wrote: >>>> >>>>>Hi Acee, >>>>> >>>>>When we met we agreed to have a new model for clients. Afterwards I >>>>>decided to create a new types module, and still went ahead with the >>>>>clients module. I am fine with having everything in the types module >>>>>(no >>>>>client module). >>>> >>>>Although I don’t feel that strongly - I just don’t see that putting the >>>>client config params in wrappers provides any benefit. As for >>>>detriments, >>>>it requires more one more local modules for validation and one more >>>>level >>>>of indirection to see what we are really allowing to be configured. >>>> >>>>> >>>>>I am not sure I fully understand your comment/question on >>>>>bfd-client-ext-cfg-parms/bfd-grouping-common-cfg-parms. The reason we >>>>>have >>>>>2 groupings is that some protocols may decide to have just the enable >>>>>leaf >>>>>and others may also want the multiplier/timer. >>>> >>>>The bfd-client-ext-cfg-parms grouping should use >>>>bfd-types:bfd-grouping-common-cfg-parms rather than >>>>bfd-types:bfd-client-base-cfg-parms - no? This would be more obvious >>>>w/o >>>>the client module. >>>> >>>>Thanks, >>>>Acee >>>> >>>> >>>>> >>>>>Regards, >>>>>Reshad. >>>>> >>>>> >>>>> >>>>>On 2017-07-27, 3:07 PM, "Acee Lindem (acee)" <acee@cisco.com> wrote: >>>>> >>>>>>Hi Reshad, >>>>>>Why do we need a new YANG model for clients? Why can’t they just use >>>>>>ietf-bfd-types.yang? I’d like to avoid the unnecessary levels of >>>>>>indirection. In fact, it looks wrong to me since the grouping >>>>>>bfd-client-ext-cfg-parms uses the grouping >>>>>>bfd-grouping-base-cfg-parms >>>>>>which only contains the enabled leaf. I believe you meant to use >>>>>>bfd-grouping-common-cfg-parms in the other new model. However, I >>>>>>don’t >>>>>>see >>>>>>any reason why client shouldn’t use this directly. >>>>>>Thanks, >>>>>>Acee >>>>>> >>>>>>On 7/25/17, 2:33 PM, "Reshad Rahman (rrahman)" <rrahman@cisco.com> >>>>>>wrote: >>>>>> >>>>>>>Hi Yingzhen, >>>>>>> >>>>>>>The grouping is available @ >>>>>>>https://github.com/jhaas-pfrc/ietf-bfd-yang/blob/master/src/yang/iet >>>>>>>f >>>>>>>- >>>>>>>b >>>>>>>f >>>>>>>d >>>>>>>- >>>>>>>c >>>>>>>lients.yang >>>>>>> >>>>>>>If you¹d like changes to the grouping, send me an email. >>>>>>> >>>>>>>Regards, >>>>>>>Reshad. >>>>>>> >>>>>>>On 2017-07-21, 12:22 PM, "Yingzhen Qu" <yingzhen.qu@huawei.com> >>>>>>>wrote: >>>>>>> >>>>>>>>Hi Reshad, >>>>>>>> >>>>>>>>Thanks for the summary. >>>>>>>> >>>>>>>>Both ospf and isis models will make corresponding changes when the >>>>>>>>new >>>>>>>>BFD grouping is available. >>>>>>>> >>>>>>>>Thanks, >>>>>>>>Yingzhen >>>>>>>> >>>>>>>>-----Original Message----- >>>>>>>>From: Reshad Rahman (rrahman) [mailto:rrahman@cisco.com] >>>>>>>>Sent: Thursday, July 20, 2017 7:19 AM >>>>>>>>To: Jeffrey Haas <jhaas@pfrc.org>; rtg-bfd@ietf.org >>>>>>>>Cc: draft-ietf-bfd-yang@ietf.org; draft-ietf-ospf-yang@ietf.org >>>>>>>>Subject: Re: I-D Action: draft-ietf-bfd-yang-06.txt >>>>>>>> >>>>>>>>We (BFD and OSPF YANG authors) had a discussion yesterday. >>>>>>>> >>>>>>>>The agreement is that since IGP peers are auto-discovered, we want >>>>>>>>to >>>>>>>>add >>>>>>>>back the basic BFD config (multiplier + intervals) in IGP via a >>>>>>>>grouping. >>>>>>>>BFD will provide that grouping in a specific YANG module. IGP BFD >>>>>>>>YANG >>>>>>>>will be in a separate module (separate from the main IGP module). >>>>>>>> >>>>>>>> >>>>>>>>Regards, >>>>>>>>Reshad. >>>>>>>> >>>>>>>>On 2017-07-05, 12:21 PM, "Rtg-bfd on behalf of Jeffrey Haas" >>>>>>>><rtg-bfd-bounces@ietf.org on behalf of jhaas@pfrc.org> wrote: >>>>>>>> >>>>>>>>>Thanks authors for the edits on the BFD yang module. This gets us >>>>>>>>>a >>>>>>>>>significant step closer to alignment with the rest of IETF for >>>>>>>>>network >>>>>>>>>instancing. >>>>>>>>> >>>>>>>>>I'd like to encourage the working group to provide feedback on >>>>>>>>>this >>>>>>>>>issue and also the changes in the module. >>>>>>>>> >>>>>>>>>As noted in another thread, we still have to figure out how to >>>>>>>>>deal >>>>>>>>>with accommodating interaction of the BFD yang module with client >>>>>>>>>protocols. >>>>>>>>>For >>>>>>>>>example, the IGPs. In particular, how do you configure the >>>>>>>>>properties >>>>>>>>>of the BFD sessions that may be dynamically instantiated based on >>>>>>>>>control protocol activity? >>>>>>>>> >>>>>>>>>-- Jeff >>>>>>>>> >>>>>>>>>On Fri, Jun 30, 2017 at 12:55:59PM -0700, internet-drafts@ietf.org >>>>>>>>>wrote: >>>>>>>>>> >>>>>>>>>> A New Internet-Draft is available from the on-line >>>>>>>>>>Internet-Drafts >>>>>>>>>>directories. >>>>>>>>>> This draft is a work item of the Bidirectional Forwarding >>>>>>>>>>Detection >>>>>>>>>>of the IETF. >>>>>>>>>> >>>>>>>>>> Title : YANG Data Model for Bidirectional >>>>>>>>>>Forwarding >>>>>>>>>>Detection (BFD) >>>>>>>>>> Authors : Reshad Rahman >>>>>>>>>> Lianshu Zheng >>>>>>>>>> Mahesh Jethanandani >>>>>>>>>> Santosh Pallagatti >>>>>>>>>> Greg Mirsky >>>>>>>>>> Filename : draft-ietf-bfd-yang-06.txt >>>>>>>>>> Pages : 59 >>>>>>>>>> Date : 2017-06-30 >>>>>>>>>> >>>>>>>>>> Abstract: >>>>>>>>>> This document defines a YANG data model that can be used to >>>>>>>>>>configure >>>>>>>>>> and manage Bidirectional Forwarding Detection (BFD). >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> The IETF datatracker status page for this draft is: >>>>>>>>>> https://datatracker.ietf.org/doc/draft-ietf-bfd-yang/ >>>>>>>>>> >>>>>>>>>> There are also htmlized versions available at: >>>>>>>>>> https://tools.ietf.org/html/draft-ietf-bfd-yang-06 >>>>>>>>>> https://datatracker.ietf.org/doc/html/draft-ietf-bfd-yang-06 >>>>>>>>>> >>>>>>>>>> A diff from the previous version is available at: >>>>>>>>>> https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-yang-06 >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> Please note that it may take a couple of minutes from the time >>>>>>>>>>of >>>>>>>>>>submission until the htmlized version and diff are available at >>>>>>>>>>tools.ietf.org. >>>>>>>>>> >>>>>>>>>> Internet-Drafts are also available by anonymous FTP at: >>>>>>>>>> ftp://ftp.ietf.org/internet-drafts/ >>>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >
- I-D Action: draft-ietf-bfd-yang-06.txt internet-drafts
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Jeffrey Haas
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Reshad Rahman (rrahman)
- RE: I-D Action: draft-ietf-bfd-yang-06.txt Yingzhen Qu
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Reshad Rahman (rrahman)
- RE: I-D Action: draft-ietf-bfd-yang-06.txt Yingzhen Qu
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Acee Lindem (acee)
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Reshad Rahman (rrahman)
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Acee Lindem (acee)
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Reshad Rahman (rrahman)
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Acee Lindem (acee)
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Reshad Rahman (rrahman)
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Acee Lindem (acee)
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Reshad Rahman (rrahman)
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Acee Lindem (acee)
- RE: I-D Action: draft-ietf-bfd-yang-06.txt Yingzhen Qu
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Reshad Rahman (rrahman)
- RE: I-D Action: draft-ietf-bfd-yang-06.txt Yingzhen Qu
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Mahesh Jethanandani
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Reshad Rahman (rrahman)
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Mahesh Jethanandani
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Mahesh Jethanandani
- RE: I-D Action: draft-ietf-bfd-yang-06.txt Yingzhen Qu
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Mahesh Jethanandani
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Jeffrey Haas
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Jeffrey Haas
- RE: I-D Action: draft-ietf-bfd-yang-06.txt Yingzhen Qu
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Acee Lindem (acee)
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Acee Lindem (acee)
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Mahesh Jethanandani
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Mahesh Jethanandani
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Mahesh Jethanandani
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Jeffrey Haas
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Ashesh Mishra
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Mahesh Jethanandani
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Jeffrey Haas
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Jeffrey Haas
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Mahesh Jethanandani
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Jeffrey Haas
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Mahesh Jethanandani
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Jeffrey Haas
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Mahesh Jethanandani
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Reshad Rahman (rrahman)
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Jeffrey Haas
- Re: I-D Action: draft-ietf-bfd-yang-06.txt Reshad Rahman (rrahman)
- Re: I-D Action: draft-ietf-bfd-yang-17.txt t petch
- Re: I-D Action: draft-ietf-bfd-yang-17.txt Reshad Rahman (rrahman)
- Re: I-D Action: draft-ietf-bfd-yang-17.txt tom petch
- Re: I-D Action: draft-ietf-bfd-yang-17.txt Reshad Rahman (rrahman)
- Re: I-D Action: draft-ietf-bfd-yang-17.txt tom petch
- Re: I-D Action: draft-ietf-bfd-yang-17.txt tom petch
- Re: I-D Action: draft-ietf-bfd-yang-17.txt Reshad Rahman
- Re: I-D Action: draft-ietf-bfd-yang-17.txt Greg Mirsky