I seem to recall somebody new to snmp here doing a request (from keyboard) and bringing the system down - N series on 7.5. We just restarted and said 'don't do that again;
jp
Regards,
John Pitman
-----Original Message-----
From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On Behalf Of Chris Bartram
Sent: Monday, 17 May 2010 1:33 PM
To: [log in to unmask]
Subject: Re: [HP3000-L] SNMP: Request received for unsupported object.
HP-3000 Systems Discussion wrote:
> In my experience, MPE handles SNMP for which the MIBs are
> present/expected without noticeable overhead.
>
> HOWEVER, I've seen systems hung for an hour at 100% (and not
> small systems) due to an snmpwalk request from an overzealous
> (or curious) windows or network admin.
>
> Just my 2cts worth.
>
> jack
That was the old bug that James referred to; I believe I was the one that
first reported that to HP long ago (an SNMPWALK from our HP OpenView server
pretty much crippled our 997 at the time as it requested free space from all
72 drives). They did fix that bug so if you're at all current on patches you
shouldn't see that issue any more (that was more than 10 years ago now).
If you do run SNMP (which isn't necessarily a bad thing) you DEFINITELY
should not use the default "public" community strings. By all means change
that asap. Edit SNMPCONF.NET.SYS and do an SNMPONTROL STOP/START (if you
have SNMPUDC.NET.SYS setup as a UDC). SNMPCONTROL STATUS will show you if
it's enabled or not.
My HP OpenView NNM system incurred those "unsupported object" messages every
time it did a discovery poll of my 3000s. No big deal though; NNM goes
through a whole cycle of SNMP MIB queries trying to figure out what the
device can do and what it responds to.
-Chris Bartram
> -----Original Message-----
> From: HP-3000 Systems Discussion
> [mailto:[log in to unmask]] On Behalf Of Ranft, Mark
> Sent: Friday, May 14, 2010 2:08 PM
> To: [log in to unmask]
> Subject: Re: [HP3000-L] SNMP: Request received for unsupported object.
>
> We use SNMP to send traps to SiteScope servers with Lund
> performance information.
>
> But you do NOT want things interrogating your system for
> information. In my experience (in particular, OpenView) the
> SNMP queries will work on the HP 3000, but will use a lot of
> resources.
>
> Mark Ranft
>
> -----Original Message-----
> From: HP-3000 Systems Discussion
> [mailto:[log in to unmask]] On Behalf Of Craig Lalley
> Sent: Friday, May 14, 2010 12:01 PM
> To: [log in to unmask]
> Subject: Re: [HP3000-L] SNMP: Request received for unsupported object.
>
> Tracy,
>
> I generally turn it off, for security reasons, as well as it
> stops the errors generated by non-cooperative networking departments.
>
> -Craig
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