Re: [netconf] some comments on netconf-adaptive-subscription

Henk Birkholz <henk.birkholz@sit.fraunhofer.de> Fri, 25 June 2021 21:50 UTC

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To: Qin Wu <bill.wu@huawei.com>, Michael Richardson <mcr+ietf@sandelman.ca>, "netconf@ietf.org" <netconf@ietf.org>, "core@ietf.org" <core@ietf.org>
References: <34e1882b99774c4e94216050aefafe78@huawei.com>
From: Henk Birkholz <henk.birkholz@sit.fraunhofer.de>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netconf/wA0hc7A_-D2KiYUMQbEyRQEMIns>
Subject: Re: [netconf] some comments on netconf-adaptive-subscription
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Hi Michael,
hi Qin,
hi all,

I am painfully aware that I did not find the cycles to progress Concise 
YANG Telemetry in the recent past. This seems to be a good opportunity 
to change that :-)

Wrt the topic of XPATH, there is 
https://datatracker.ietf.org/wg/jsonpath/about/ now and specifically 
https://datatracker.ietf.org/doc/draft-ietf-jsonpath-base/

It probably makes sense to create an I-D here that tracks the gaps that 
need to be bridged to do a CBORPATH for CORECONF. I'll take that item in 
concert with rekindling the other one.

Viele Grüße,

Henk


On 25.06.21 19:04, Qin Wu wrote:
> -----邮件原件-----
> 发件人: Michael Richardson [mailto:mcr+ietf@sandelman.ca]
> 发送时间: 2021年6月26日 0:51
> 收件人: Qin Wu <bill.wu@huawei.com>om>; netconf@ietf.org; core@ietf.org
> 主题: Re: some comments on netconf-adaptive-subscription
> 
> 
> Michael Richardson <mcr+ietf@sandelman.ca> wrote:
>      >> [Qin]: I am also hoping RESTCONF and CORECONF can work together, but
>      >> they seems to look into different use cases (constrained device
>      >> management vs unconstrained device management) .  I am not sure we
>      >> should generalized RESTCONF and CORECONF into a single protocol.
> 
>      > That's not what I'm suggesting.  I'm asking, if bandwidth is an issue,
>      > why not use a smaller encoding.  And, why not integrate with CoAP
>      > Observe?
> 
> draft-birkholz-yang-core-telemetry-01 [now expired] for instance tries to do a lot of the matching.  I think that the adaptive rate subscription that you've created would work very well within that model.
> [Qin]: Well, I will investigate this and see what is missing there.
> I guess yang-core-telemetry-01 needs to update itself as ietf-netconf-subscribed-notifications is published as RFC 8639 right.
> [Qin]: Agree.
> I still don't know how XPath would work with COMI, but really I'm just sitting around the edges of the YANG over the wire space.
> [Qin]: Good question, note that XPATH used for NETCONF follows XPath 1.0 [W3C.REC-xpath-19991116] and XPath 2.0
> See RFC6241 section 8.9 and RFC7950 section 6.4.
> --
> Michael Richardson <mcr+IETF@sandelman.ca>   . o O ( IPv6 IøT consulting )
>             Sandelman Software Works Inc, Ottawa and Worldwide
> 
> 
> 
> 
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