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Re: [Rtg-yang-coord] issue :R03: assignment of interfaces to routing instances

"Russ White" <russw@riw.us> Sun, 18 January 2015 13:25 UTC

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From: "Russ White" <russw@riw.us>
To: "'Xufeng Liu'" <xufeng.liu@ericsson.com>, "'Jeff Tantsura'" <jeff.tantsura@ericsson.com>, "'Andy Bierman'" <andy@yumaworks.com>
References: <m2wq6j5skf.fsf@nic.cz> <D0D9CB3F.B6C0%acee@cisco.com> <8022061D-AB8F-4A97-84E7-A6E4F898F57F@nic.cz> <AAB1CC9C17CBA440BDFA169056B93B9EB10521@eusaamb107.ericsson.se> <35023717-7EE8-4F45-B2F4-B24E0F86FA5A@nic.cz> <20150113212732.GD1545@elstar.local> <23976026-499F-4C9C-844A-DB53BE244992@nic.cz> <AAB1CC9C17CBA440BDFA169056B93B9EB1128D@eusaamb107.ericsson.se> <20150114155450.GA3625@elstar.local> <AAB1CC9C17CBA440BDFA169056B93B9EB1139B@eusaamb107.ericsson.se> <CABCOCHSiWG=x0vTYKKxqhMqd69yK+Nuo0k_Y_=Y_KHkQBDi3FA@mail.gmail.com> <D0DBD855.889EB%jeff.tantsura@ericsson.com> <AAB1CC9C17CBA440BDFA169056B93B9EB11472@eusaamb107.ericsson.se>
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Date: Sun, 18 Jan 2015 08:24:46 -0500
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Cc: rtg-yang-coord@ietf.org, "'Acee Lindem \(acee\)'" <acee@cisco.com>, 'Juergen Schoenwaelder' <j.schoenwaelder@jacobs-university.de>, 'Ladislav Lhotka' <lhotka@nic.cz>
Subject: Re: [Rtg-yang-coord] issue :R03: assignment of interfaces to routing instances
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> The concatenated string format is actually what we plan to do. However, to
> me, it is more like a hack than an engineered solution. The model fails to
> capture such a relationship properly.

How would you plan on "showing" such a pair of interfaces from a potential
CLI? If you switch into a "routing instance mode," then the user is likely
to think of these as different "contexts," and hence having two "devices" on
the same physical box is probably the cleanest solution from the YANG model
perspective. If you add something to the interface name (the routing
instance, or something similar), then the user is already associating that
name with the interface name in a "concatenated" way, so doing the same in
the YANG interface name shouldn't be an issue.

:-)

Russ

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