Re: [mpls] Structure of draft-ietf-mpls-static-yang
"Tarek Saad (tsaad)" <tsaad@cisco.com> Tue, 13 November 2018 16:31 UTC
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From: "Tarek Saad (tsaad)" <tsaad@cisco.com>
To: tom petch <ietfc@btconnect.com>, mpls <mpls@ietf.org>
CC: "draft-ietf-mpls-base-yang@ietf.org" <draft-ietf-mpls-base-yang@ietf.org>
Thread-Topic: Structure of draft-ietf-mpls-static-yang
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Date: Tue, 13 Nov 2018 16:31:26 +0000
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Subject: Re: [mpls] Structure of draft-ietf-mpls-static-yang
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Hi Tom, Thanks. To me, RIP/OSPF/PIM/BGP are all control plane protocols and would think should exist below /routing/control-plane-protocols. MPLS on the contrary is a forwarding augmentation to existing V4/V6 routing table(s) (which are already defined at path /routing/ribs/rib/routes/route/next-hop ) - the MPLS augmentation carries additional mpls specific data. There are signaling control plane protocols specific to exchange MPLS labels (e.g. RSVP-TE, LDP) which I expect will exist at /routing/control-plane-protocols/control-plane-protocol (e.g. draft-ietf-teas-yang-rsvp) Regards, Tarek -----Original Message----- From: tom petch <ietfc@btconnect.com> Date: Tuesday, November 13, 2018 at 7:37 AM To: Tarek Saad <tsaad@cisco.com>, mpls <mpls@ietf.org> Cc: "draft-ietf-mpls-base-yang@ietf.org" <draft-ietf-mpls-base-yang@ietf.org> Subject: Structure of draft-ietf-mpls-static-yang I wonder if the IETF has yet worked out how to model routing protocols. I asked, what is MPLS? Looking at various modules, I see RIP augment /routing/control-plane-protocols/control-plane-protocol: +--rw rip +--rw interfaces OSPF augment /routing/control-plane-protocols/control-plane-protocol: +--rw ospf +--rw areas | +--rw area* [area-id] | +--rw interfaces the other IxxxGP module: ietf-ixxx augment /routing/ribs/rib/routes/route: +--ro route-type? enumeration augment /interfaces/interface: +--rw clns-mtu? uint16 augment /routing/control-plane-protocols/:control-plane-protocol: +--rw ixxx +--rw enable? boolean {admin-control}? +--rw system-id? system-id +--rw area-address* area-address BGP augment "/routing-policy/defined-sets" module ietf-bgp { +--rw bgp! +--rw global +--rw afi-safis +--rw afi-safi* [afi-safi-name] +--rw ipv4-unicast +--rw ipv6-unicast +--rw l3vpn-ipv4-unicast PIM module: ietf-pim-base augment /routing/control-plane-protocols: +--rw pim! +--rw address-family* [address-family] | +--rw address-family identityref | +--rw <per address family configuration> +--rw interfaces +--rw interface* [name] +--rw name if:interface-ref +--rw address-family* [address-family] MPLS module: ietf-mpls augment /rt:routing: +--rw mpls augment /routing/ribs/rib/routes/:route: +--ro local-label? rt-types:mpls-label augment /routing/ribs/rib/routes/route/next-hop/next-hop-options/simple-next-hop : .... identity mpls { base address-family; Different! which is right? Perhaps none of them. It is very early days for routing YANG modules, no RFC, limited experience. I am mindful that it took several years after the publication of the initial system YANG modules for the advent of NDMA - a radically different approach - so perhaps in a few years we will be looking at the routing modules and say it needs a different approach. Sigh Tom Petch
- [mpls] I-D Action: draft-ietf-mpls-static-yang-05… internet-drafts
- Re: [mpls] I-D Action: draft-ietf-mpls-static-yan… t.petch
- Re: [mpls] I-D Action: draft-ietf-mpls-static-yan… Tarek Saad (tsaad)
- Re: [mpls] I-D Action: draft-ietf-mpls-static-yan… Tarek Saad (tsaad)
- Re: [mpls] I-D Action: draft-ietf-mpls-static-yan… tom petch
- Re: [mpls] I-D Action: draft-ietf-mpls-static-yan… tom petch
- [mpls] Structure of draft-ietf-mpls-static-yang tom petch
- Re: [mpls] Structure of draft-ietf-mpls-static-ya… Tarek Saad (tsaad)
- Re: [mpls] Structure of draft-ietf-mpls-static-ya… tom petch
- Re: [mpls] Structure of draft-ietf-mpls-static-ya… Tarek Saad (tsaad)
- Re: [mpls] Structure of draft-ietf-mpls-static-ya… tom petch
- Re: [mpls] Structure of draft-ietf-mpls-static-ya… tom petch