nv-l

RE: [nv-l] Monitored Server down (duplicate addresses)

2002-10-31 19:05:56
Subject: RE: [nv-l] Monitored Server down (duplicate addresses)
From: "Leslie Clark" <lclark AT us.ibm DOT com>
To: nv-l AT lists.tivoli DOT com
Date: Thu, 31 Oct 2002 19:05:56 -0500
I did not see this answer to this question, so I will send this even though
it is
late (sorry for being so out of touch lately..). At least it will be in the
archives.

Whenever you have these intentional duplicate addresses, for clusters for
example,
put the duplicate addresses in the seedfile with %, to be treated as fake
HSRP
addresses. Netview will check them to see if they need moving, but won't
mark
them as down, or delete/add them at every config poll.

Support for this was added in 6.0.1 or 6.0.2, I believe, to handle
redundant IBM MSSs.

Back to mining the old postings for tips...... I learn something every day
from you guys.

Cordially,

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



                                                                                
                                              
                      "Bursik, Scott                                            
                                              
                      {PBSG}"                  To:       "'James Brunke'" 
<jbrunke AT ctsgi DOT com>, nv-l AT lists.tivoli DOT com          
                      <[email protected]        cc:                              
                                              
                      g.com>                   Subject:  RE: [nv-l] Monitored 
Server down                                     
                                                                                
                                              
                      09/26/2002 02:25                                          
                                              
                      PM                                                        
                                              
                                                                                
                                              
                                                                                
                                              



I have seen similar issues with AIX nodes in a HA cluster. We have some AIX
machines in 2 different locations and with 2 different HA configurations
and
it happens only at the one location. I can get it to trigger with a demand
poll of one of the nodes.

I have also seen this behavior with duplicate IP addresses. Every time
NetView SNMP polls one of the nodes with the duplicate it causes an
interface or node down event, depending on the number of interfaces on that
node. Then when it polls the other node with that address it happens again.
It just flops back and fourth. If the cluster has interfaces with
duplicated
addresses, even if they aren't on a network reachable by NetView, NetView
will discover them through the SNMP configuration poll.

Scott Bursik
Event Systems Management
Pepsico Business Solutions Group
(972) 334-3757
scott.bursik AT pbsg DOT com

-----Original Message-----
From: James Brunke [mailto:jbrunke AT ctsgi DOT com]
Sent: Thursday, September 26, 2002 11:52 AM
To: nv-l AT lists.tivoli DOT com
Subject: RE: [nv-l] Monitored Server down

I've seen the same node down on Compaq clusters when Netview does either
new node discovery or SNMP scan for configuration changes.  Sorry, I
don't have a solution...

James Brunke
Crystal Technology Solutions Group
Email: jbrunke AT ctsgi DOT com


-----Original Message-----
From: bducharme AT avdl DOT com [mailto:bducharme AT avdl DOT com]
Sent: Thursday, September 26, 2002 11:46 AM
To: nv-l AT lists.tivoli DOT com
Subject: [nv-l] Monitored Server down


Hi,

Netview 6.1, AIX 4.3.2 IBM netcard TCPIP at 100 full.

HI i have a problem with Netview.
3 times a day, around 6 am, around 1:30 pm and 11 pm.
The same 4 machines, Compaq server in cluster with teaming network card,
show down. But there is nothing on the network, no backup or intense
activity. And those server aren't down. I check out the config on the
Cisco switch and there is nothing differents for thoses servers. And
they are not on the same card on the Cisco 5000. I change the snmp
configuration for thoses server polling, down status, etc, with no
results.

Someone have an idea ?
Where to start troubleshoot ?

Thanks

Ben



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