I tried snmp 5.3.3 on both 64 bits and 32 bits servers, and the link traps only
partially worked for 32 bits server. By "partially", I mean that the agent
didn't take the frequency and -S option, it just simply used the default one
(one minute) and didn't suppress the traps at the agent startup.
I had the following in snmpd.confnotificationEvent linkUpTrap linkUp
ifIndex ifAdminStatus ifOperStatusnotificationEvent linkDownTrap linkDown
ifIndex ifAdminStatus ifOperStatusmonitor -S -r 10 -e linkUpTrap "Generate
linkUp" ifOperStatus != 2monitor -S -r 10 -e linkDownTrap "Generate linkDown"
ifOperStatus == 2
ThanksXuan
From: b...@live.com
To: d.t.shi...@liverpool.ac.uk
CC: net-snmp-users@lists.sourceforge.net
Subject: RE: Strange behavior on linkUpDownNotifications
Date: Tue, 6 Apr 2010 16:52:50 -0400
I just tried snmp 5.3.3 and couldn't get the link traps working. Same behavior
observed. A bunch of link up/down traps when the agent started up or restarted.
After that, even I change the interface to be down by "ifdown eth2", no traps
were sent out.
ThanksXuan
> Date: Tue, 6 Apr 2010 12:19:16 +0100
> Subject: Re: Strange behavior on linkUpDownNotifications
> From: d.t.shi...@liverpool.ac.uk
> To: b...@live.com
> CC: net-snmp-users@lists.sourceforge.net
>
> 2010/3/29 X Z <b...@live.com>:
> > I finally can receive link up/down traps. But here is the strange behavior:
> > 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.
> > 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.
> > 3. There were only one coldStart trap and one nsShutdown trap as expected.
> > Does anyone know the reason? I search the email archives and seems that
> > other people had the same issue before, and one response to the problem was
> > that's expected behavior. I don't quite understand why the above behavior
> > happened?
> > Does anyone know how to make link up/down traps work?
>
>
> Are you still using your own "monitor"/"event" definitions?
> Have you tried using the built-in implementation of these traps?
> (i.e. "linkUpDownNotifications yes")
>
> Which version of the agent are you using?
>
> Dave
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