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    <blockquote> <p>Do the agents store its state on the device itself?</p> </blockquote> <p>It depends on the device and the application; some devices stores it locally others use a proxy agent. </p> <blockquote> <p>If there is a trap set on an agent, can you do a poll on the same OID to get the same information?</p> </blockquote> <p>Yes, but it usually better to include information in the trap so the management station does not have to do multiple "round-trips" to the device. If you trap on an attribute value change, for instance, it is good practice to send the old and new value in the trap.</p> <blockquote> <p>Without using a mib file, is there a way to query a device for all of its information at once? If not, and you're writing your own customized manager, do you have to know the structure of what it reports up front?</p> </blockquote> <p>Generally no... the SNMP Get-next primitive is designed for just such a case. </p> <blockquote> <p>If you're setting up an agent to report, is there usually a way to control the frequency of how often it sends a trap? Or does it usually send a trap as often as some condition is satisfied?</p> </blockquote> <p>Yes, it is up to the agent on when to send traps. </p> <p>If you are developing your own agent, I <em>highly</em> suggest you look at Net-SNMP. Even if you choose to go with another product, the Net-SNMP code is very well designed and implemented. Plus it has lots of extras to help develop and test agents (and management systems).</p>
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    1. POBasic questions about SNMP
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    1. COCopy and Paste? -1 as someone else used the same answer
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    2. COStack overflow novice mistake. Comment about NetSNMP should still be valid and useful.
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