SNMP status polling is set automatically for any router with un-numbered
serial interfaces OR it is coded in the seedfile:
routername
$routername
The dollar sign forces the previous entry to use SNMP status polling. You
will probably have to delete and re-discover the node. I highly recommend
SNMP status polling whereever possible on the basis that it is FAR less work
to manage interfaces since you don't have to ping all of them (or unmanage
them).
-----Original Message-----
From: Peter_Chow@TD.COM [mailto:Peter_Chow@TD.COM]
Sent: Wednesday, May 15, 2002 2:35 PM
To: nv-l@lists.tivoli.com
Subject: [nv-l] Netview Traps - Time to post
Demand poll indicates that a ping is being used.
When I log on to the router and status the interface in question, it does
indicate that the interface is down.
The only thing peculiar about our lab setup is that there is a very large
amount of unmanaged devices. Could this be causing the delay?
What is the difference between polling with SNMP as opposed to ping? Where
is this configured?
Regards, Peter.
------------------------------
Date: Mon, 13 May 2002 10:55:55 -0400
To: nv-l@lists.tivoli.com
From: Peter_Chow@TD.COM
Subject: Netview Traps - Time to post
Message-ID: <OF18B017A7.C9A112B7-ON85256BB8.0051DF29@dms.ops.tdbank.ca>
We're performing some testing with Netview traps in a lab environment.
One of the tests was to pull out the interface cable on a router and see
how long it would take to receive the interface down trap on netview.
We expected to receive the trap within minutes but instead received the
trap almost two and a half hours later!!!
What is going on here? How can we minimize this 'turnaround time' to
within minutes?
------------------------------
Date: Mon, 13 May 2002 18:31:18 -0400
To: nv-l@lists.tivoli.com
From: "Leslie Clark" <lclark@us.ibm.com>
Subject: Re: [nv-l] Netview Traps - Time to post
Message-ID: <OF21AA9E5A.72FB0C2E-ON85256BB8.007B8B26@raleigh.ibm.com>
By any chance are you polling that device via SNMP as opposed to ping?
You can tell when you do a demandpoll. If it is SNMP, the status of each
interface is displayed in terms of ifAdmin and ifOper status.
Is it possible that the device itself believes that the interface is up and
reports it as up, for that long?
Cordially,
Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
Detroit
Peter_Chow@TD.COM
To: Leslie
Clark/Southfield/IBM@IBMUS
05/13/2002 03:55 cc:
PM Subject: Re: [nv-l] Netview
Traps - Time to post
I agree that this is not normal and thank God that its not happening in our
production environment.
If I ping the interface object after I pull the cable, the status will
change to down and a trap is received right away.
If I do nothing, then no status update or trap is received for a long
period (2.5 hrs)..
SNMP Polling Info is : timeout 4.0; retry 3 ; polling 3m.
The IP interface is represented and managed.
Any suggestions on what may be wrong?
"Leslie
Clark" To: Peter_Chow@TD.COM
<lclark@us.ib cc:
m.com> Subject: Re: [nv-l] Netview
Traps - Time to post
05/13/02
12:35 PM
Well, that's not good. Fortunately it is not normal, either!
When you pull the cable, can you still ping the address
of that interface from the Netview box? And what is the
polling interval set to? That is in Options...SNMP configuration
and defaults to 5 minutes. Is the IP address of the interface
represented on the map, and is it managed? You should see
at least an Interface Down event in trapd.log for that interface
within one polling cyle.
I would have to say there is a lot more to this story than
what you have told us so far. Tell us more...
Cordially,
Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
Detroit
Peter_Chow@TD.COM
To:
nv-l@lists.tivoli.com
05/13/2002 10:55 cc:
AM Subject: [nv-l] Netview
Traps - Time to post
We're performing some testing with Netview traps in a lab environment.
One of the tests was to pull out the interface cable on a router and see
how long it would take to receive the interface down trap on netview.
We expected to receive the trap within minutes but instead received the
trap almost two and a half hours later!!!
What is going on here? How can we minimize this 'turnaround time' to
within minutes?
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