Re: [nv-l] monitoring port flapping

[Leslie Clark <lclark@us.ibm.com>]

I usually run a ruleset that watches for link down traps from devices. Include a threshold set for something like 3 in 5 minutes on the same node (Origin) and interface index number (variable 1), and at the 3rd one, run an action. That action should issue a new custom event in the Netview enterprise using the snmptrap command.  That is the trap I would act on in whatever ruleset I'm using to do notification or forward to the TEC. 

The reason for watching these, of course, is that the netmon polling cycle can easily miss an interface in the down state when it is going up and down repeatedly. And of course if it is for an unnumbered port that is not represented on the map, it would be the only indication of a problem. 

Cordially,

Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
Detroit

"Qureshi, Fawad" <Fawad.Qureshi@ssa.gov> Sent by: owner-nv-l@lists.us.ibm.com 02/26/2004 03:58 PM Please respond to nv-l

To:        "'nv-l@lists.us.ibm.com'" <nv-l@lists.us.ibm.com>         cc:                 Subject:        [nv-l] monitoring port flapping

NV 7.1.3 / AIX 5.1
 
Any one monitoring for port flapping via Netview?
 
We experienced a VIP interface failure on a Cisco device, which seem to have started a chain of flapping ports.
 
Cheers 
 
Fawad Qureshi