Re: [netmod] [Netconf] Multiple instances configuration issues-//FW: New Version Notification for draft-liu-netconf-multi-instances-00.txt

Hi,

I read your draft and it I can see use-cases for a context-ID.
I prefer to think of named virtual hosts in Apache2, rather than
SNMP contexts.

I don't think your solution is fully specified, but it is a good start.
I think the following solution could easily work, which is just a
refinement of your solution in sec. 4.1.

 1) define a 'server-id' XML attribute
 2) define a NETCONF 'virtual-server' capability indicating the server
supports the 'server-id' attribute
 3) the server is already required to accept all attributes in the <rpc>
start tag and return
     them in the <rpc-reply> start tag. (So sending the server-id attribute
is safe in all cases).
 4) If the server supports the capability, then it must check for the
server-id attribute in each <rpc>
     and use the correct virtual server or else return an error if it is an
unknown server-id.

I don't really understand Gap-2 and Gap-3 so I am not addressing that.  It
looks like
it might overlap the "YANG mount" draft (draft-clemm-netmod-mount-01).
IMO that is a completely different problem -- configuration of a
mid-level-manager.

Andy

On Wed, Jul 2, 2014 at 2:51 AM, Liubing (Leo) <leo.liubing@huawei.com>
wrote:

> Hi all in Netconf & Netmod,
>
> In last Netconf meeting in London, my colleague Guangying Zheng raised a
> question at the mike about how to distinguish multiple VRFs when using
> NETCONF to configure a device.
> And then in the mailing list, David Lamparter led a very good discussion
> of the problem.
>
> As discussed in the mailing list, it is not only regarding to VRF, rather,
> it is quite a general issue.
> So we wrote a draft to try to make a comprehensive discussion of the
> issue. The draft analyzes the management requirements for multiple
> instances like VRF, and pointed out some gaps in current NETCONF protocol
> and YANG models. At last, the draft briefly discuss some possible solutions
> to fill the gaps.
>
> Please review the draft and comment.
> Many thanks!
>
> Best regards,
> Bing
>
>
> -----Original Message-----
> From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org]
> Sent: Wednesday, July 02, 2014 4:48 PM
> To: Liubing (Leo); Liubing (Leo); Yangang; Yangang
> Subject: New Version Notification for
> draft-liu-netconf-multi-instances-00.txt
>
>
> A new version of I-D, draft-liu-netconf-multi-instances-00.txt
> has been successfully submitted by Bing Liu and posted to the IETF
> repository.
>
> Name:           draft-liu-netconf-multi-instances
> Revision:       00
> Title:          Multi-Instances Configuration Issue in NETCONF
> Document date:  2014-07-02
> Group:          Individual Submission
> Pages:          10
> URL:
> http://www.ietf.org/internet-drafts/draft-liu-netconf-multi-instances-00.txt
> Status:
> https://datatracker.ietf.org/doc/draft-liu-netconf-multi-instances/
> Htmlized:
> http://tools.ietf.org/html/draft-liu-netconf-multi-instances-00
>
>
> Abstract:
>    This document puts together the NETCONF issues of configuring
>    multiple instances including configuring multiple network element
>    instances and multiple service instances. The main problem is how to
>    configure the multiple instances in one NETCONF channel.
>
>
>
>
> 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.
>
> The IETF Secretariat
>
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