> Subject: RE: Strange behavior on linkUpDownNotifications
> Date: Mon, 5 Apr 2010 11:37:04 -0700
> From: mike_ay...@tva.tvworks.com
> To: b...@live.com; d.t.shi...@liverpool.ac.uk
> CC: net-snmp-users@lists.sourceforge.net
>
>
> > From: X Z [mailto:b...@live.com]
> > Sent: Monday, March 29, 2010 8:40 AM
>
> > 1. link up/down traps only sent after the snmpd is restarted. If I
> > don't restart snmpd, there were no link up/down traps sent.
>
> Even if this is an issue, the workaround is simple, yes?
There is no workaround. I don't want the false alarms on link traps when the
snmpd is restarted. And I want to be able to get link up/down notifications
whenever I used "ifup" or "ifdown" to bring up and down the interface.
>
> > 2. There were too many link up/down traps after snmpd is restarted. I
> > usually saw 3 link up traps and 6 link down traps even if I only
> > brought down and up the interface once.
>
> This is basically a known issue with the linkUp/linkDown strategy.
> During initialization of the master agent and/or tyhe OS, links, or their
> representation, may be reconfigured several times. The NMS is expected to
> provide debouncing.
>
> As for the question you're thinking but not asking, the answer is no -
> it is not possible to program the agent such that traps are sent only when
> service is interrupted due to link failure - too much out of band information
> is needed to draw such conclusions.
I am only interested in the following case: I have two interfaces, one is main
interface where snmpd is running on the interface. There is another interface
for the other traffics. In the case of the second interface is down, I hope to
see the link up/down traps.
ThanksXuan
>
>
> HTH,
>
> Mike
>
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