2008/6/2 Amit Kumar <[EMAIL PROTECTED]>:
> In snmp user based security model what is the maximum number of usm users 
> limit ?

Well, the usmUserName object is limited to 32 printable characters.
If you restrict yourself to alphanuneric lower case names, that
would give you 36 possibilities for each character.
   Some quick calculations indicate there are something of the
order of 6.5 * 10^49 possible such usernames.

I suspect you might be more restricted by the memory available in
your target box.   You'll probably get around 3 usmUser structures
per Kb memory, so 3,000 users will occupy around 1Mb.   You can
scale things up to larger configurations yourself.


I can pretty much guarantee that the agent has never been tested
with such large configurations, so you might find that a large number
of USM users might impact performance.   (Finding a given user
from within a simple linked list is easy but not particularly efficient!)

Dave

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