On Fri, Feb 18, 2011 at 3:58 PM, Dave Shield <d.t.shi...@liverpool.ac.uk>wrote:
> On 18 February 2011 20:28, Fulko Hew <fulko....@gmail.com> wrote:
> > I have two regions registered, and I perform a getnext to the master...
> >
> > The master sends an AgentX getNext PDU on the first region looking for a
> > positive response. Unfortunately, the 'next' variable isn't within that
> range
> > so my sub-agent returns endOfMibView as per (RFC2741 7.32.3.2 paragraph
> 2)
>
> No - I don't think that's correct.
> Your subagent should look for the next variable it instantiates *without*
> regard to registration of regions (RFC 2741, section 7.2.3.2 paragraph 1)
>
But paragraph 2 sub-bullet 3 says the variable must preceed the ending OID
(if provided), so it does check (not the registration regions, (sorry I used
the
wrong term) but the search range)
It should return this varbind, even though it's outside the first region.
>
> It's up to the master agent to decide whether to discard this response
> and look for something in the intermediate portion, before repeating the
> request if necessary.
>
> That's my understanding, anyway.
>
I think I found my problem...
When I return endOfMibView (on that first search), I was also setting the
res.error field to endOfMibView.
Instead I now set the varbind.type to endOfMibView (as before) and
res.error to noError (instead).
As a result... walking now appears to work.
The spec was (I think a little ambiguous) and perhaps should have explicitly
said what res.error should be set to in paragraph 2)
Anyway... progress!
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