RE: extension agent problem need help!!

Harald Tveit Alvestrand <> Fri, 29 October 1999 14:20 UTC

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Date: Fri, 29 Oct 1999 16:02:05 +0200
To: Meena Palvannan <>, "'Bruce E. Balden'" <balden@FIREPLUG.NET>
From: Harald Tveit Alvestrand <>
Subject: RE: extension agent problem need help!!
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At 09:04 29.10.99 -0400, Meena Palvannan wrote:
>Thanks for your response.
> >>Since an empty row doesn't signal the end, something else does.
>Can you tell me how to signal the end, as we are unable to retrieve the data
>even using getbulk
>It stops at the empty row.

If it's an SNMPv3 implementation, that's a bug.
The end is signalled by being returned a variable that's lexically later 
than the range you wanted; the SNMP agent never knows where you intended to 

>Apart from missing items after an empty row, retrieving data this way is
>inefficient. Find out what data is there, and ask for it in chunks, naming
>variable instance explicitly, multiple items per query to improve
>At a certain point, you'll exceed the packet length or burden the managed
>device, but an optimum number of variables to retrieve at once should be in
>excess of 10, thereby reducing traffic load by that factor.

Get-next should be able to get through.

Perhaps you should contact the SNMPv3 group to discuss the problem. - it is considered polite to join the group before 
asking questions, instructions can be found on the WG page.

              Harald A

Harald Tveit Alvestrand, Maxware, Norway