Re: [Netconf] rfc5277:one session can only support one <create-subscription>?

draft-clemm-netconf-yang-push is intended to support many subscriptions on a NETCONF session.  This draft was verbally approved for WG status a couple weeks ago in Prague, although the formal mailing list vote is still pending.

Can you take a look at section 3.8 of that draft above and see if it meets your needs?   And if not, suggest what else might be necessary?

Thanks,
Eric

From: Andy Bierman, August 03, 2015 10:22 PM

On Mon, Aug 3, 2015 at 6:52 PM, <du.baowei23@zte.com.cn<mailto:du.baowei23@zte.com.cn>> wrote:
Hello!

I was confused by the RFC5277 relationship between the session and subscription numbers.

In RFC5277:

2.  Notification-Related Operations
2.1.  Subscribing to Receive Event Notifications

   The event notification subscription is initiated by the NETCONF
   client and responded to by the NETCONF server.  A subscription is
   bound to a single stream for the lifetime of the subscription.  When
   the event notification subscription is created, the events of
   interest are specified.

QUESTION：a session can contain subscription.
          May a session contain several subscriptions?

no

6.  Interleave Capability
6.5.  Modifications to Existing Operations

   When a <create-subscription> is sent while another subscription is
   active on that session, the following error will be returned:

      Tag: operation-failed

      Error-type: protocol

      Severity: error

      Error-info: none

      Description: Request could not be completed because the requested
      operation failed for some reason not covered by any other error
      condition.

QUESTION: when interleave capability is active, a session can only support
          one <create-subscription> at one time.
          Does it imply that
          when a subscription is active, if there is no interleave capability
          and agent receive another <create-subscription>, session will
          support both two subscription?

the :interleave capability means the server will accept commands on
the same session that notifications are being sent.  The server has
to interleave complete <rpc-reply> and <notification> messages

Another <create-subscription> is not allowed.

thanks :)

Andy

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