Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04.txt
Jeff Tantsura <jefftant.ietf@gmail.com> Wed, 20 March 2019 18:06 UTC
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Date: Wed, 20 Mar 2019 11:06:25 -0700
From: Jeff Tantsura <jefftant.ietf@gmail.com>
To: Xufeng Liu <xufeng.liu.ietf@gmail.com>, Mahesh Jethanandani <mjethanandani@gmail.com>, "Acee Lindem (acee)" <acee@cisco.com>
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Subject: Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04.txt
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+1 Cheers, Jeff On Mar 20, 2019, 7:57 AM -0700, Acee Lindem (acee) <acee@cisco.com>, wrote: > I agree – the BGP hierarchy is wrong. Address-family is generally higher both abstractly and in implementations. > Thanks, > Acee > > From: Idr <idr-bounces@ietf.org> on behalf of Xufeng Liu <xufeng.liu.ietf@gmail.com> > Date: Wednesday, March 20, 2019 at 10:30 AM > To: Mahesh Jethanandani <mjethanandani@gmail.com> > Cc: IDR List <idr@ietf.org> > Subject: Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04.txt > > Hi Mahesh, > > On Tue, Mar 19, 2019 at 6:48 PM Mahesh Jethanandani <mjethanandani@gmail.com> wrote: > > Hi Xufeng, > > > > > > > On Mar 19, 2019, at 6:31 AM, Xufeng Liu <xufeng.liu.ietf@gmail.com> wrote: > > > > > > Hi Mahesh, > > > > > > Thanks for the update. > > > > > > I'd like to comment on the new changes at a high level: > > > > > > 1) rib extension > > > This paradigm is inconsistent with other protocol models like ospf and isis, where the protocol specific routes are kept under the protocol instance tree, not under the /rt:routing/rt:ribs. Based on RFC8349, the /rt:routing/rt:ribs tree is used to model the routes per routing instance, which is better mapped to the Route Manager (whose name varies depending on the implementations). > > > > > > > While that might be true, routes in the BGP model currently are maintained at the per-address family level. > > It is fine that routes are maintained at per-address family level, which is also done by other routing protocols. The question is how the tree hierarchy is structured. > OSPF model has the following: > > module: ietf-routing > +--rw routing > | +--rw control-plane-protocols > | | +--rw control-plane-protocol* [type name] > | | +--rw ospf:ospf > | | +--ro ospf:protected-routes {fast-reroute}? > | | | +--ro ospf:af-stats* [af prefix alternate] > | | | +--ro ospf:af iana-rt-types:address-family > | | +--ro ospf:unprotected-routes {fast-reroute}? > | | | +--ro ospf:af-stats* [af prefix] > | | | +--ro ospf:af iana-rt-types:address-family > | | +--ro ospf:local-rib > | | | +--ro ospf:route* [prefix] > | | | +--ro ospf:prefix inet:ip-prefix > | | | +--ro ospf:next-hops > | | +--ro ospf:statistics > | | +--ro ospf:database > | | | +--ro ospf:as-scope-lsa-type* [lsa-type] > > ISIS model has the following: > > module: ietf-routing > +--rw routing > | +--rw control-plane-protocols > | | +--rw control-plane-protocol* [type name] > | | +--rw isis:isis > | | +--rw isis:interfaces > | | | +--rw isis:interface* [name] > | | | +--rw isis:name if:interface-ref > | | +--ro isis:database > | | | +--ro isis:level-db* [level] > | | | +--ro isis:level level-number > | | | +--ro isis:lsp* [lsp-id] > | | | +--ro isis:decoded-completed? boolean > | | | +--ro isis:raw-data? yang:hex-string > | | | +--ro isis:lsp-id lsp-id > | | +--ro isis:local-rib > | | | +--ro isis:route* [prefix] > | | | +--ro isis:prefix inet:ip-prefix > | | | +--ro isis:next-hops > > > This BGP model uses operational state sub-tree mostly from the OpenConfig model, but OpenConfig does not augment ietf-routing and uses separate global tree. If we keep the OpenConfig sub-tree, it would be better to structure the BGP rip as following: > > module: ietf-routing > +--rw routing > | +--rw control-plane-protocols > | | +--rw control-plane-protocol* [type name] > +--rw bgp:bgp > +--rw global! > +--rw neighbors > | +--rw neighbor* [neighbor-address] > +--rw peer-groups > +--rw peer-group* [peer-group-name] > +--ro bgp-rib > +--ro attr-sets > | +--ro attr-set* [index] > | +--ro index uint64 > +--ro afi-safis > +--ro afi-safi* [afi-safi-name] > +--ro afi-safi-name identityref > +--ro ipv4-unicast > | +--ro loc-rib > | | +--ro routes > | | +--ro route* [prefix origin path-id] > +--ro ipv6-unicast > | +--ro loc-rib > | | +--ro routes > | | +--ro route* [prefix origin path-id] > +--ro ipv4-srte-policy > | +--ro loc-rib > | | +--ro routes > | +--ro neighbors > | +--ro neighbor* [neighbor-address] > +--ro ipv6-srte-policy > +--ro loc-rib > | +--ro routes > > Thanks, > - Xufeng > > > > 2) module ietf-bgp is missing > > > Is it intentional to remove the main module ietf-bgp? The description says that bgp model augments the ietf-routing, but there is no such an augment statement in the draft. I assume that the augment statement is in the main module ietf-bgp. > > > > > > > That was indeed a cut-and-paste error. The next version of the draft will have the ietf-bgp module. > > > > Thanks. > > > > > > > > > > Thanks, > > > - Xufeng > > > > > > On Tue, Feb 26, 2019 at 1:20 PM Mahesh Jethanandani <mjethanandani@gmail.com> wrote: > > > > This update of the draft adds support for: > > > > > > > > - augmentation of the Routing Management Model. > > > > - augmentation of the routing policy model > > > > - support for RIB > > > > > > > > Comments welcome. > > > > > > > > > On Feb 26, 2019, at 10:16 AM, 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 Inter-Domain Routing WG of the IETF. > > > > > > > > > > Title : BGP YANG Model for Service Provider Networks > > > > > Authors : Keyur Patel > > > > > Mahesh Jethanandani > > > > > Susan Hares > > > > > Filename : draft-ietf-idr-bgp-model-04.txt > > > > > Pages : 138 > > > > > Date : 2019-02-26 > > > > > > > > > > Abstract: > > > > > This document defines a YANG data model for configuring and managing > > > > > BGP, including protocol, policy, and operational aspects based on > > > > > data center, carrier and content provider operational requirements. > > > > > > > > > > > > > > > The IETF datatracker status page for this draft is: > > > > > https://datatracker.ietf.org/doc/draft-ietf-idr-bgp-model/ > > > > > > > > > > There are also htmlized versions available at: > > > > > https://tools.ietf.org/html/draft-ietf-idr-bgp-model-04 > > > > > https://datatracker.ietf.org/doc/html/draft-ietf-idr-bgp-model-04 > > > > > > > > > > A diff from the previous version is available at: > > > > > https://www.ietf.org/rfcdiff?url2=draft-ietf-idr-bgp-model-04 > > > > > > > > > > > > > > > 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/ > > > > > > > > > > _______________________________________________ > > > > > Idr mailing list > > > > > Idr@ietf.org > > > > > https://www.ietf.org/mailman/listinfo/idr > > > > > > > > Mahesh Jethanandani > > > > mjethanandani@gmail.com > > > > > > > > > > > > > > > > _______________________________________________ > > > > Idr mailing list > > > > Idr@ietf.org > > > > https://www.ietf.org/mailman/listinfo/idr > > > > Mahesh Jethanandani > > mjethanandani@gmail.com > > > > > > > _______________________________________________ > Idr mailing list > Idr@ietf.org > https://www.ietf.org/mailman/listinfo/idr
- [Idr] I-D Action: draft-ietf-idr-bgp-model-04.txt internet-drafts
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… Mahesh Jethanandani
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… Dale W. Carder
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… Xufeng Liu
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… Mahesh Jethanandani
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… Mahesh Jethanandani
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… Xufeng Liu
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… Acee Lindem (acee)
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… Rajiv Asati (rajiva)
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… tom petch
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… Jeff Tantsura
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… Qin Wu
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… Mahesh Jethanandani
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… Mahesh Jethanandani
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… Susan Hares
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… Susan Hares
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… Susan Hares
- Re: [Idr] I-D Action: draft-ietf-idr-bgp-model-04… Acee Lindem (acee)