Donald Tse wrote:
>> The agent will *always* probe the status of the link at regular
>> intervals....
>> [without "-r 60"] this is done once every 10 minutes (the default),
>> instead of every minute.
>
>
> Is it means : if I disconnection the Link and resume it within 10 mins
> (say exactly between the probing interval) , I will not receive trap?
Suppose the agent checks the link at 12:00, and again at 12:10.
If the link is working properly at both times, then no - it will not
generate a trap.
This is true even if the link was down from 12:01 to 12:09 - the agent
is *only*
aware of the status at the precise points at which it checks the link.
It's not a
magic box - it can only work with what it actually sees.
That's why the documented configuration includes "-r 60" - so that it
will detect
failures reasonably promptly.
> Second : After the agent report Link has got down, if resume the link
> later on, can I receive trap again?
Yes.
If one sample shows the link down, and a later sample shows the link up
again, then
this will trigger a 'linkUp' trap. (Again, only one, and only when the
status is
sampled - not immediately the link comes live).
Dave
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