Re: non-subscriber posting (Agentx)

Hi Red,

[Please follow-up on the agentx list]

(1) Agentx uses sessions so that the master agent and sub-agents can readily detect a breakdown in connectivity with the other.  For example, if a
-test-set is sent to a sub-agent that crashes, the master-agent can recover more quickly than by waiting for the dispatch to the sub-agent to timeout.

(2) It is possible for many subagents to know about the same object-type.  Typically, subagents will register a subtree rather than a leaf object.
There are many details involved when registering a subtree (see RFC 2741 sxn 6.2.3, "The agentx-Register-PDU").  When the master receives a request
for a particular object name, it searches its list of registrations to determine the "authorative region", and dispatches the request to a single
subagent  (see sxn. 7.1.4.1,  "Handling Duplicate and Overlapping Subtrees")

The above should get you headed in the right direction, and additional followup questions are welcome- please post to [email protected].

Regards,

Mark Ellison
Ellison Software Consulting, Inc.


Randy Presuhn wrote:

> Dear ***,
>            I have two  questions  about agentX protocol.
>           Question 1:
>                     Why agentX use sessions?
>                     I think  that  subagent register  a connection with masterAgent ,then register the vews to masterAgent. It is enogh
>           Question 2:
>                     Can many subagents owned the same OID? when SNMP set is requested, will master Agent send agentX_test_set for each   subagent?
>
>            I am waiting for your reply, Thanks
>
>                                                    Red
>
>                     .
>
>