Re: [netmod] 6991bis: address-with-prefix-length
"Rob Wilton (rwilton)" <rwilton@cisco.com> Tue, 02 April 2019 15:37 UTC
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From: "Rob Wilton (rwilton)" <rwilton@cisco.com>
To: Martin Bjorklund <mbj@tail-f.com>, "j.schoenwaelder@jacobs-university.de" <j.schoenwaelder@jacobs-university.de>
CC: "netmod@ietf.org" <netmod@ietf.org>
Thread-Topic: [netmod] 6991bis: address-with-prefix-length
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Date: Tue, 02 Apr 2019 15:37:08 +0000
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Subject: Re: [netmod] 6991bis: address-with-prefix-length
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> -----Original Message----- > From: netmod <netmod-bounces@ietf.org> On Behalf Of Martin Bjorklund > Sent: 02 April 2019 13:47 > To: j.schoenwaelder@jacobs-university.de > Cc: netmod@ietf.org > Subject: Re: [netmod] 6991bis: address-with-prefix-length > > Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> wrote: > > If you go back ~20 messages, my proposal was ip-address-prefix, > > ipv4-address-prefix, and ipv6-address-prefix. > > Do we agree that this type really specifies two values in one? If so I think the > "and" is useful. Isn't an "IP prefix" made up of an "IP address" and a "prefix length"? So, I think that the names above are probably right, or otherwise if you want the "and" then perhaps it should be "ip-address-and-prefix-length" - which seems clunky? Thanks, Rob > > Also note that the current text in RFC 6991 says: > > The ipv4-prefix type represents an IPv4 address prefix. > > so having a type ipv4-address-prefix for something that is not (only) an > "ipv4 address prefix" is imo confusing. > > > /martin > > > > > > > > /js > > > > On Tue, Apr 02, 2019 at 11:13:09AM +0000, tom petch wrote: > > > ----- Original Message ----- > > > From: "Jeff Tantsura" <jefftant.ietf@gmail.com> > > > To: <netmod@ietf.org>; "Kristian Larsson" <kristian@spritelink.net> > > > Sent: Monday, April 01, 2019 11:09 PM > > > > > > What Kristian has proposed makes sense, in favor. > > > > > > <tp> > > > > > > Yes, I support this idea and we should be able to come up with a > > > more user-friendly name; address-prefix or address-length ? > > > > > > Tom Petch > > > > > > p.s. > > > > > > identifier = (ALPHA / "_") > > > *(ALPHA / DIGIT / "_" / "-" / ".") > > > > > > Cheers, > > > Jeff > > > On Apr 1, 2019, 1:09 PM -0700, Kristian Larsson > > > <kristian@spritelink.net>, wrote: > > > > Hello Mahesh, > > > > > > > > On 2019-04-01 21:40, Mahesh Jethanandani wrote: > > > > > > > > > > > On Apr 1, 2019, at 10:29 AM, Martin Bjorklund <mbj@tail-f.com> > > > wrote: > > > > > > > > > > > > I know that this type is convenient, esp. if you use it for > > > > > > manual input, but I wonder if it really is good practice to > > > > > > squeeze two values into one. > > > > > > > > > > Agree. The combination makes sense for CLI, but for modeling the > > > address and prefix should be separate. > > > > > > > > Okay, then why do we have an ip-prefix data type at all? With the > > > > same line of argument you apply, it should be split up. > > > > > > > > So you're the third person bringing up CLI. I don't get this at > > > > all. I don't see how CLI are different from everything else. This > > > > is about > > > data > > > > modeling and data modeling is about expressing the world in a data > > > > modeling language. It's like painting a picture but instead of a > > > > brush you have a schema language like YANG. What do you see? > > > > Express it. It doesn't matter if the purpose is a CLI, a web page > > > > or just exposing it via NETCONF for another system to consume. > > > > > > > > I think address-and-prefix-length is natural. JUNOS uses this format. > > > XR > > > > uses this format (for IPv6 at least). Nokia SROS uses this format. > > > > > > > > We have written a bunch of models where the lack of this IMHO > > > > makes > > > them > > > > less elegant. I'd like for there to be an IETF standard data type > > > > to make those models more elegant. > > > > > > > > Kind regards, > > > > Kristian. > > > > > > > > _______________________________________________ > > > > netmod mailing list > > > > netmod@ietf.org > > > > https://www.ietf.org/mailman/listinfo/netmod > > > > > > > > > > > > -------------------------------------------------------------------- > > > ---- > > > -------- > > > > > > > > > > _______________________________________________ > > > > netmod mailing list > > > > netmod@ietf.org > > > > https://www.ietf.org/mailman/listinfo/netmod > > > > > > > > > > _______________________________________________ > > > netmod mailing list > > > netmod@ietf.org > > > https://www.ietf.org/mailman/listinfo/netmod > > > > -- > > Juergen Schoenwaelder Jacobs University Bremen gGmbH > > Phone: +49 421 200 3587 Campus Ring 1 | 28759 Bremen | Germany > > Fax: +49 421 200 3103 <https://www.jacobs-university.de/> > > > > _______________________________________________ > > netmod mailing list > > netmod@ietf.org > > https://www.ietf.org/mailman/listinfo/netmod > > > > _______________________________________________ > netmod mailing list > netmod@ietf.org > https://www.ietf.org/mailman/listinfo/netmod
- [netmod] 6991bis: address-with-prefix-length Kristian Larsson
- Re: [netmod] 6991bis: address-with-prefix-length Juergen Schoenwaelder
- Re: [netmod] 6991bis: address-with-prefix-length Acee Lindem (acee)
- Re: [netmod] 6991bis: address-with-prefix-length Acee Lindem (acee)
- Re: [netmod] 6991bis: address-with-prefix-length Martin Bjorklund
- Re: [netmod] 6991bis: address-with-prefix-length Acee Lindem (acee)
- Re: [netmod] 6991bis: address-with-prefix-length Michael Rehder
- Re: [netmod] 6991bis: address-with-prefix-length Michael Rehder
- Re: [netmod] 6991bis: address-with-prefix-length Martin Bjorklund
- Re: [netmod] 6991bis: address-with-prefix-length Kristian Larsson
- Re: [netmod] 6991bis: address-with-prefix-length Kristian Larsson
- Re: [netmod] 6991bis: address-with-prefix-length Mahesh Jethanandani
- Re: [netmod] 6991bis: address-with-prefix-length Kristian Larsson
- Re: [netmod] 6991bis: address-with-prefix-length Acee Lindem (acee)
- Re: [netmod] 6991bis: address-with-prefix-length Mahesh Jethanandani
- Re: [netmod] 6991bis: address-with-prefix-length Kristian Larsson
- Re: [netmod] 6991bis: address-with-prefix-length Christian Hopps
- Re: [netmod] 6991bis: address-with-prefix-length Jeff Tantsura
- Re: [netmod] 6991bis: address-with-prefix-length tom petch
- Re: [netmod] 6991bis: address-with-prefix-length Juergen Schoenwaelder
- Re: [netmod] 6991bis: address-with-prefix-length Rob Wilton (rwilton)
- Re: [netmod] 6991bis: address-with-prefix-length Kristian Larsson
- Re: [netmod] 6991bis: address-with-prefix-length Rob Wilton (rwilton)
- Re: [netmod] 6991bis: address-with-prefix-length Martin Bjorklund
- Re: [netmod] 6991bis: address-with-prefix-length Juergen Schoenwaelder
- Re: [netmod] 6991bis: address-with-prefix-length Rob Wilton (rwilton)
- Re: [netmod] 6991bis: address-with-prefix-length Acee Lindem (acee)
- Re: [netmod] 6991bis: address-with-prefix-length Rob Wilton (rwilton)
- Re: [netmod] 6991bis: address-with-prefix-length tom petch
- Re: [netmod] 6991bis: address-with-prefix-length Rob Wilton (rwilton)
- Re: [netmod] 6991bis: address-with-prefix-length Reshad Rahman (rrahman)
- Re: [netmod] 6991bis: address-with-prefix-length Martin Bjorklund
- Re: [netmod] 6991bis: address-with-prefix-length Mahesh Jethanandani
- Re: [netmod] 6991bis: address-with-prefix-length Juergen Schoenwaelder
- Re: [netmod] 6991bis: address-with-prefix-length Christian Hopps
- Re: [netmod] 6991bis: address-with-prefix-length Alex Campbell
- Re: [netmod] 6991bis: address-with-prefix-length Christian Hopps
- Re: [netmod] 6991bis: address-with-prefix-length Kristian Larsson
- Re: [netmod] 6991bis: address-with-prefix-length Kristian Larsson
- Re: [netmod] 6991bis: address-with-prefix-length Juergen Schoenwaelder
- Re: [netmod] 6991bis: address-with-prefix-length Kristian Larsson
- Re: [netmod] 6991bis: address-with-prefix-length Juergen Schoenwaelder
- Re: [netmod] 6991bis: address-with-prefix-length Ladislav Lhotka
- Re: [netmod] 6991bis: address-with-prefix-length Kristian Larsson
- Re: [netmod] 6991bis: address-with-prefix-length Ladislav Lhotka
- Re: [netmod] 6991bis: address-with-prefix-length Juergen Schoenwaelder
- Re: [netmod] 6991bis: address-with-prefix-length Martin Bjorklund
- Re: [netmod] 6991bis: address-with-prefix-length Juergen Schoenwaelder
- Re: [netmod] 6991bis: address-with-prefix-length Martin Bjorklund
- Re: [netmod] 6991bis: address-with-prefix-length Per Hedeland
- Re: [netmod] 6991bis: address-with-prefix-length Martin Bjorklund
- Re: [netmod] 6991bis: address-with-prefix-length Juergen Schoenwaelder
- Re: [netmod] 6991bis: address-with-prefix-length Kristian Larsson
- Re: [netmod] 6991bis: address-with-prefix-length Kristian Larsson
- Re: [netmod] 6991bis: address-with-prefix-length Martin Bjorklund
- Re: [netmod] 6991bis: address-with-prefix-length Rob Wilton (rwilton)
- Re: [netmod] 6991bis: address-with-prefix-length tom petch
- Re: [netmod] 6991bis: address-with-prefix-length Ladislav Lhotka
- Re: [netmod] 6991bis: address-with-prefix-length Kristian Larsson