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Re: draft-shafer-netconf-syslog-00.txt

Phil Shafer a écrit :

I've finally got an initial version of the draft for a netconf
capability that makes syslog data available over long-lived RPCs.
I just sent it off to the RFC Editor, so it should show up on
ietf.org sometime this weekend, but an advance copy is available.

http://professional.juniper.net/phil/ietf/draft-shafer-netconf-syslog-00.txt

A few comments and questions:
I don't really understand the design choice of the get-syslog-streams operation because I think it breaks the idea of the get-config operation. IMHO, even if it is feasible and allowed by Netconf, nothing here justifies the need of a new operation. 

<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
 <get-syslog-streams xmlns="http://ietf.org/netconf/syslog/1.0"/>
</rpc>
Wouldn't it be more conform to Netconf to define a short data model for syslog streams and use the regular get-config with a selection node ? The reply would be exactly the same as the one you described in the draft (except the <data> element of course). 
<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
 <get-config>
   <source>
     <running/>
   </source>
   <filter>
     <top>
       <syslog-streams xmlns="http://ietf.org/netconf/syslog/1.0"/>
     </top>
   </filter>
 </get-config>
</rpc>
For the second part 3.2, I am confused. What happens if I send a get-syslog-events with a stop-time one hour later ? Can I still use this Netconf session to send other RPC during this time ? I guess no. The Netconf session would be locked for a long period of time.
If I understand well, this approach assumes that the agent is parsing the XML data stream on the fly (like with SAX, but not DOM). Because the rpc-reply does not seem to be closed until a stop condition happens and DOM can not read a partial document. If this is the case, must the agent assume that the rpc-reply message will be valid before it received the whole message ? And process it ? 

Regards,
Vincent



Thanks,
 Phil

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