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[Netmod-ver-dt] Version selection for NETCONF

"Reshad Rahman (rrahman)" <rrahman@cisco.com> Thu, 19 September 2019 02:30 UTC

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From: "Reshad Rahman (rrahman)" <rrahman@cisco.com>
To: "netmod-ver-dt@ietf.org" <netmod-ver-dt@ietf.org>
Thread-Topic: Version selection for NETCONF
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Date: Thu, 19 Sep 2019 02:29:58 +0000
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Subject: [Netmod-ver-dt] Version selection for NETCONF
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Hi all,

Last week (email + meeting) there seemed to be consensus on the use of “root path” method for RESTCONF.

For NETCONF, we discussed using capabilities. Extending the capabilities to include “schema versions” seems sensible, with 1 top-level schema per schema family where family is e.g. vendor-xxx-native, ietf, OpenConfig.

  1.  An example of schema-versions advertised: vendor-xxx-native_1.2.1, vendor-xxx-native_2.0.0, ietf_2.3.0. We also need an RPC for the client to select which schema-version (among the ones advertised by the server) it wants to use.
  2.  If a client doesn’t call the SetVersion RPC, then the server’s behavior is to resort to default schema version (when multiple versions of schemas are supported).
  3.  If a server doesn’t advertise any schema-versions, client doesn’t call SetVersion RPC and both behave as they do today.

Thoughts on this?

Regards,
Reshad.

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