Subject: RE: direction of SNMP traps (was: RE: [midcom] SNMPv3 as MIDCOM protocol: Opinions?)

From: "Harrington, David" <[email-masked]>
Date: Fri, 13 Dec 2002 09:10:35 -0500

Hi,

Yes. Notifications can be dynamically filtered based on table indices, using VACM. The SNMPv3 notification mibs can be used to direct notifications. By combining the two capabilities, SNMPv3 can be used to dynamically direct notifications based on the table indices of managed objects. The scenario you present should be no problem.

There are a number of ways to design for this problem, and there may be more efficient ways to achieve this than my first suggestion.

dbh

> -----Original Message-----
> From: Juergen Quittek [mailto:[email-masked]]
> Sent: Wednesday, December 11, 2002 3:54 AM
> To: Harrington, David; [email-masked]
> Subject: direction of SNMP traps (was: RE: [midcom] SNMPv3 as MIDCOM
> protocol: Opinions?)
> 
> 
> David,
> 
> Does SNMP allow to dynamically direct traps based on table
> indices or values of managed objects?
> 
> Or more concretely, would the following be a valid MIB design?
> 
> One kind of transactions used in the semantics doc is an asynchronous
> notification from middlebox to midcom agent. Particularly, the
> notification (for example on expiration of a policy rule) is sent
> to one or more agents that configured it and not to midcom agents
> unrelated to the policy rule.
> 
> I assume that a policy rule is modeled by a row of a table,
> indexed by the owner (or creator) of the row (and some further
> index components). Is there a way to have a notification on
> policy rule timeout sent to (just) the owner of the row?
> 
> Certainly, you can just specify this in the SMI description of the
> notification, but would existing standard compliant SNMP agent
> toolkits support this (with some extra code provided by the MIB
> implementor)?
> 
> The address and other required information on the owner might be
> stored in a separate table.
> 
>     Juergen
> 
> 
> -- Harrington, David wrote on 10 December 2002 19:51 -0500:
> 
> > How will the traps work in the multi-server scenario?
> >
> > dbh> SNMPv3 trap management can support multiple manager 
> applications, and you can configure the system to deliver 
> certain types of traps to one manager, and another type to a 
> different manager.
> 
> 
> 
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