There was some discussion here a while back about the generic
Link Up/Down traps, and I have attached Sylvia Koch's append. So
if you have enabled the link up/down traps on the device, Netview ought
o be reflecting the status changes, even if they are coming in pretty fast.
============
I have invested some time in testing the behaviour of netmon and verified
by analyzing iptrace that netmon indead reacts to unsolicited traps telling
link up/down (generic trap ids 2 and 3):
As soon as netmon receives a link up or link down trap from trapd, sent by
an agent, netmon immediately pings the interface which has been told to be
up or down. Netmon does not wait until the end of the polling interval.
But netmon does not seem to react to any other trap in the same manner.
Sylvia Koch
The test was made with NetView for AIX 5.1.1, AIX 4.2.1 and an AIX based
Workstation with SNMP agent.
================
Cordially,
Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
Detroit
===========================================================================
If it is a Cisco device, they send a LinkUp (and LinkDown) trap when an
interface changes state. You could page/perform other action based on
these
messages.
The other option would be to change the polling interval to a smaller
number
(which is fine until you start getting a large number (> 10) devices) to
detect smaller outages. We use the 5 minute polling by default and have a
rule setup to detect line bouncing based off the Cisco traps (more than 5
in
60 minutes).
Patrick
-----Original Message-----
From: Discussion of IBM NetView and POLYCENTER Manager on NetView
[mailto:NV-L@UCSBVM.ucsb.edu]On Behalf Of Michael Bock
Sent: Tuesday, February 22, 2000 1:58 PM
To: NV-L@UCSBVM.ucsb.edu
Subject: Status Polling
I had a router's serial interface that was going up and down every 10
seconds, and Tivoli was showing this as a green OK symbol.
I reviewed the device to see if there was any special setup in the snmp on
TIVOLI and it uses the default value of 5min. for Status Polling.
Is there any thing else that could have caused this not to work properly. I
did a manual PING from the router symbol and it immediately went RED.
Anything I can look at for further information would be appreciated.
Thanks
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