Re: [Netconf] delete-config on candidate
Martin Bjorklund <mbj@tail-f.com> Mon, 17 December 2018 17:05 UTC
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Date: Mon, 17 Dec 2018 18:05:40 +0100
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To: jonathan@hansfords.net
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From: Martin Bjorklund <mbj@tail-f.com>
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Subject: Re: [Netconf] delete-config on candidate
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Hi, "Jonathan Hansford" <jonathan@hansfords.net> wrote: > Hi, > > In 2009-2010 the question was asked whether the <delete-config> > operation was allowed on the candidate configuration datastore. In May > 2010 it was stated "The <delete-config> definition need not list all > disallowed options. But the section on :candidate does not like (sic) > <delete-config> as a modified operation. This means delete-config is > not allowed." (See Re: [Netconf] delete-config on candidate? > <https://mailarchive.ietf.org/arch/msg/netconf/k-ioZ8Ev3vc27ky4dHH-cQtTEnY>) > > The implication is that, unless something is explicitly stated as > being allowed (in this case in RFC 4741 and, presumably, by extension > RFC 6241), it is not allowed. Well, the quoted email was from the time when we worked on 4741bis, aka 6241. > I have just checked RFC 6241 and, on that basis, come to the following > conclusions: > <copy-config> : <running>, <candidate>, <startup> and <url> are > allowed as sources and targets > > <delete-config> : <startup> and <url> > are allowed as targets; <running> is explicitly excluded; <candidate> > is implicitly excluded > > <edit-config> : <running> and <candidate> are > allowed as targets; <startup> and <url> are implicitly excluded, > though <url> can be the config > > <get-config> : <candidate> and <startup> > are allowed as sources; <running> is used in examples and therefore I > assume this constitutes an implicit inclusion; <url> is implicitly > excluded > > <lock> and <unlock> : <running>, <candidate> and <startup> are > allowed as targets; <url> is implicitly excluded > > <validate> : > <candidate>, <startup> and <url> are allowed as sources; <running> is > implicitly excluded > > So, in summary: > <running> is not a valid target for <delete-config> or a valid source > for <validate>; it is probably a valid source for > <get-config><candidate> is not a valid target for > <delete-config><startup> is not a valid target for <edit-config><url> > is not a valid target for <edit-config> (though it can be the config), > <lock> or <unlock>, or a valid source for <get-config> > Is that the general understanding of which operations can be used on > which datastores? No; check the YANG module in RFC 6241 and you will see for example: rpc get-config { ... input { container source { description "Particular configuration to retrieve."; choice config-source { mandatory true; description "The configuration to retrieve."; leaf candidate { ... } leaf running { ... } so it is clear that 'running' can be used in get-config. Similar for the others in your list. /martin
- [Netconf] delete-config on candidate Jonathan Hansford
- Re: [Netconf] delete-config on candidate Martin Bjorklund