nv-l

RE: Interface name/ip status Changing?

2001-10-18 14:33:59
Subject: RE: Interface name/ip status Changing?
From: "Barr, Scott" <Scott_Barr AT csgsystems DOT com>
To: nv-l AT lists.tivoli DOT com
Date: Thu, 18 Oct 2001 13:33:59 -0500
The reason this usually happens is because there are duplicate IP addresses
on the non-routable networks. For instance, if you have an SP2 complex, some
of the switch interfaces (internal) participate in a 1.1.1 or 2.2.2 network.
If some other box in the network has a secondary interface with the same
address (again - a subnet not reachable by netview or else the machine would
report duplicate IP as soon as it was put on the network).

The only solution I know of is to re-ip the offender.

-----Original Message-----
From: Scott Bursik [mailto:tivoliesm AT hotmail DOT com]
Sent: Thursday, October 18, 2001 1:29 PM
To: nv-l AT tkg DOT com
Subject: RE: [NV-L] Interface name/ip status Changing?



The issue is, he will change back and forth throughout the day. The name 
cahnges back to the original en3 name from the longer name. Its like it is 
rediscivering the node several times a day with different interface names. 
If I unmanage one of the non-pingable interfaces (we will call it en3) later

in the day it will become managed again and the name will be the en3;  
Product: PCI Ethernet Adapter........ So NetView thinks its a new interface 
and adds it and removes the other interface. Then later on it doesit again, 
naming the interface back to en3 adn thus creating more interface traps and 
changing the status of the node back to marginal. Hope this makes sense.

Scott


>From: "Barr, Scott" <Scott_Barr AT csgsystems DOT com>
>Reply-To: IBM NetView Discussion <nv-l AT tkg DOT com>
>To: "'IBM NetView Discussion'" <nv-l AT tkg DOT com>
>Subject: RE: [NV-L] Interface name/ip status Changing?
>Date: Thu, 18 Oct 2001 12:56:02 -0500
>
>
>1003176713 1  Mon Oct 15 15:11:53 2001 pbsxd200009stby.pepsi.com N 
>Interface
>
>css0 Added
>
>===> Discovery adds it
>
>1003176713 1  Mon Oct 15 15:11:53 2001 pbsxd200009stby.pepsi.com N 
>Interface
>
>en0 Added
>
>===> Discovery adds it
>
>1003176714 3  Mon Oct 15 15:11:54 2001 pbsxd200009stby.pepsi.com N 
>Interface
>
>css0 down.
>
>===> Unpingable interface - first status poll fails this interface
>
>1003176714 7  Mon Oct 15 15:11:54 2001 pbsxd200009stby.pepsi.com N Node
>marginal.
>
>===> Box is now marginal because one or more of its interfaces are down.
>
>1003176714 3  Mon Oct 15 15:11:54 2001 pbsxd200009stby.pepsi.com N 
>Interface
>
>en0 down.
>
>===> Status poll fails to this interface as well - probably non pingable
>
>1003177212 7  Mon Oct 15 15:20:12 2001 pbsxd200009stby.pepsi.com n Demand
>polling on node pbsxd200009stby.pepsi.com.
>
>===> User initiates demand poll
>
>1003177227 4  Mon Oct 15 15:20:27 2001 pbsxd200009stby.pepsi.com N 
>Interface
>
>Descriptor for en3 changed to "en3; Product: PCI Ethernet Adapter 
>(23100020)
>
>   Manufacturer: not available! Part Number: 091H0397 FRU Number: 091H0397 
>".
>
>===> Demand poll finds the en3 interface (snmp get of interface table I
>assume)
>
>1003177227 4  Mon Oct 15 15:20:27 2001 pbsxd200009stby.pepsi.com N 
>Interface
>
>Descriptor for en1 changed to "en1; Product: PCI Ethernet Adapter 
>(23100020)
>
>
>===> Demand poll finds en1 inteface information (snmp get of interface
>table)
>
>1003177227 4  Mon Oct 15 15:20:27 2001 pbsxd200009stby.pepsi.com N 
>Interface
>
>Descriptor for en0 changed to "en0; Product: PCI Ethernet Adapter 
>(23100020)
>
>   Manufacturer: not available! Part Number: not available! FRU Number: not
>available! ".
>
>===> again en0 information obtained via the demand poll.
>
>I don't see anything wrong here? The only issue may be that the node will 
>be
>degraded unless you unmanage the non-pingable interfaces OR you must use 
>"$"
>in the seed file for this box so he uses SNMP status polls. I assume at
>least some of these interfaces are non-pingable.
>
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