Re: [netmod] I-D Action: draft-ietf-netmod-revised-datastores-02.txt
Andy Bierman writes: >I think the remnant configuration text needs clarification. >I thought the whole point of the operational datastore for config=true >nodes was to >provide the intended and applied values using the exact same >instance-identifier. Instance names are the same. Remnant configuration is data that remains in operational use (and is reported in ) after it has been removed from . This is typically the brief period during implementation of the incoming data. The text says: - remnant configuration: Configuration that remains part of the applied configuration for a period of time after it has been removed from the intended configuration or dynamic configuration. The time period may be minimal, or may last until all resources used by the newly-deleted configuration (e.g., network connections, memory allocations, file handles) have been deallocated. There's also text in the "The Operational State Datastore" section (quoted below). What is needed to make it more clear? >NC/RC/YANG does not allow the old operational value and new operational >value to >exist in the same datastore. Once the server has the new value to report, >it will overwrite >the old value. should report the currently in use values, even when that differs from . The draft currently says: As a result of remnant configuration, the semantic constraints defined in the data model cannot be relied upon for , since the system may have remnant configuration whose constraints were valid with the previous configuration and that are not valid with the current configuration. Since constraints on "config false" nodes may refer to "config true" nodes, remnant configuration may force the violation of those constraints. The constraints that may not hold include "when", "must", "min-elements", and "max-elements". Note that syntactic constraints cannot be violated, including hierarchical organization, identifiers, and type-based constraints. >Perhaps you mean other instances will be considered old, but the RD >solution has no way to >correlate the new instances to the old ones. >Therefore, YANG validation may >fail on the operational >datastore while updates are being applied. I think the draft should make >this more clear. Yes, will be have circumstances where it's contents will not be valid. It's better that the box provide accurate data than provide valid data that is not accurate. So we say that while syntactic constraints cannot be violated, semantic constraints can be. Thanks, Phil ___ netmod mailing list netmod@ietf.org https://www.ietf.org/mailman/listinfo/netmod
Re: [netmod] I-D Action: draft-ietf-netmod-revised-datastores-02.txt
Hi, I think the remnant configuration text needs clarification. I thought the whole point of the operational datastore for config=true nodes was to provide the intended and applied values using the exact same instance-identifier. NC/RC/YANG does not allow the old operational value and new operational value to exist in the same datastore. Once the server has the new value to report, it will overwrite the old value. Perhaps you mean other instances will be considered old, but the RD solution has no way to correlate the new instances to the old ones. Therefore, YANG validation may fail on the operational datastore while updates are being applied. I think the draft should make this more clear. Andy On Thu, May 11, 2017 at 1:22 PM, Martin Bjorklund wrote: > Hi, > > This version addresses the comments on the ML, and contains some > reworked terminiology in order to be consistent. Further, all open > issues are resolved. We have also removed the Appendicies that > previously were included as placeholders for text that will go into > other documents. > > >From the authors' point of view, this version is ready for WG LC. > > > /martin > > > > > internet-dra...@ietf.org wrote: > > > > A New Internet-Draft is available from the on-line Internet-Drafts > directories. > > This draft is a work item of the NETCONF Data Modeling Language of the > IETF. > > > > Title : Network Management Datastore Architecture > > Authors : Martin Bjorklund > > Juergen Schoenwaelder > > Phil Shafer > > Kent Watsen > > Rob Wilton > > Filename: draft-ietf-netmod-revised-datastores-02.txt > > Pages : 34 > > Date: 2017-05-11 > > > > Abstract: > >Datastores are a fundamental concept binding the data models written > >in the YANG data modeling language to network management protocols > >such as NETCONF and RESTCONF. This document defines an architectural > >framework for datastores based on the experience gained with the > >initial simpler model, addressing requirements that were not well > >supported in the initial model. > > > > > > The IETF datatracker status page for this draft is: > > https://datatracker.ietf.org/doc/draft-ietf-netmod-revised-datastores/ > > > > There are also htmlized versions available at: > > https://tools.ietf.org/html/draft-ietf-netmod-revised-datastores-02 > > https://datatracker.ietf.org/doc/html/draft-ietf-netmod- > revised-datastores-02 > > > > A diff from the previous version is available at: > > https://www.ietf.org/rfcdiff?url2=draft-ietf-netmod- > revised-datastores-02 > > > > > > 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. > > > > Internet-Drafts are also available by anonymous FTP at: > > ftp://ftp.ietf.org/internet-drafts/ > > > > ___ > > 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
Re: [netmod] I-D Action: draft-ietf-netmod-revised-datastores-02.txt
Hi, This version addresses the comments on the ML, and contains some reworked terminiology in order to be consistent. Further, all open issues are resolved. We have also removed the Appendicies that previously were included as placeholders for text that will go into other documents. >From the authors' point of view, this version is ready for WG LC. /martin internet-dra...@ietf.org wrote: > > A New Internet-Draft is available from the on-line Internet-Drafts > directories. > This draft is a work item of the NETCONF Data Modeling Language of the IETF. > > Title : Network Management Datastore Architecture > Authors : Martin Bjorklund > Juergen Schoenwaelder > Phil Shafer > Kent Watsen > Rob Wilton > Filename: draft-ietf-netmod-revised-datastores-02.txt > Pages : 34 > Date: 2017-05-11 > > Abstract: >Datastores are a fundamental concept binding the data models written >in the YANG data modeling language to network management protocols >such as NETCONF and RESTCONF. This document defines an architectural >framework for datastores based on the experience gained with the >initial simpler model, addressing requirements that were not well >supported in the initial model. > > > The IETF datatracker status page for this draft is: > https://datatracker.ietf.org/doc/draft-ietf-netmod-revised-datastores/ > > There are also htmlized versions available at: > https://tools.ietf.org/html/draft-ietf-netmod-revised-datastores-02 > https://datatracker.ietf.org/doc/html/draft-ietf-netmod-revised-datastores-02 > > A diff from the previous version is available at: > https://www.ietf.org/rfcdiff?url2=draft-ietf-netmod-revised-datastores-02 > > > 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. > > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ > > ___ > 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] I-D Action: draft-ietf-netmod-revised-datastores-02.txt
A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the NETCONF Data Modeling Language of the IETF. Title : Network Management Datastore Architecture Authors : Martin Bjorklund Juergen Schoenwaelder Phil Shafer Kent Watsen Rob Wilton Filename: draft-ietf-netmod-revised-datastores-02.txt Pages : 34 Date: 2017-05-11 Abstract: Datastores are a fundamental concept binding the data models written in the YANG data modeling language to network management protocols such as NETCONF and RESTCONF. This document defines an architectural framework for datastores based on the experience gained with the initial simpler model, addressing requirements that were not well supported in the initial model. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-netmod-revised-datastores/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-netmod-revised-datastores-02 https://datatracker.ietf.org/doc/html/draft-ietf-netmod-revised-datastores-02 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-netmod-revised-datastores-02 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. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ ___ netmod mailing list netmod@ietf.org https://www.ietf.org/mailman/listinfo/netmod
