RE: [nv-l] Router Fault Isolation

["Davis, Donald" <donald.davis@firstcitizens.com>]

Joshua,
I have a similar situation.
I do know the community name of my core routers, but choose not to discover them.
The reason (briefly as possible) is as follows
Each core router has over 800 Frame relay interfaces. The routers are configured exactly the same.
These interfaces are divided into 2 groups.
On core router #1 Group A is 400 up/up interfaces, group B is 400 up/down interfaces.
On core router #2 Group A is 400 up/down interfaces, group B is 400 up/up interfaces.
This was done so that if a router or T3 failed the carrier could bring up a standby circuit on the other router.

NetView discovers Router #1 then discovers Router #2 both have the same IP Addresses configured.
NetView "chases its tail" adding and deleting these 800 interfaces.
It locks the GUI. At this point NetView from a GUI perspective is completely dead.

I put negative entries in my seed file to prevent discovery of these routers.
With RFI turned on, NetView turns remote routers White when the Frame Relay circuit fails.
There is no local interface (core routers) to turn red. Therefore, NetView does not turn anything red.
So, I also turn RFI OFF so that the remote routers turn red when there is a FR failure.

I plan to open a PMR for this but it is probably working as designed.
I think my network configuration with the non-HSRP duplicate core routers is the problem.

You will see the same thing. Remote routers will turn White, but NOTHING will turn RED.
If you want to see the remote routers turn RED, you will also need to turn RFI Off.

I would try to fight through the "politics and turf" issues and get the R/O community name of your ROUTERA, even if it is a carrier.

Don
=======================
Donald Davis
First Citizens Bank
Systems Engineer Consultant
Enterprise Management
100 East Tryon Road
Mail Code: DAC 22
Raleigh, NC.  27603-3526

-----Original Message-----
From: Cossman,Joshua,GLENDALE,GLOBE Center AMS
[mailto:Joshua.Cossman@us.nestle.com]
Sent: Tuesday, February 04, 2003 5:33 PM
To: nv-l@lists.tivoli.com
Subject: [nv-l] Router Fault Isolation

If I do not know the SNMP Read Only string for ROUTERA(I'm not permitted to
have SNMP access to ROUTERA), and ROUTERA is discovered in my map, and all
the devices behind it are discovered as well, will Netview do Router Fault
Correlation to suppress Node Downs for the devices that sit behind ROUTERA
when ROUTERA is down?

JOSHUA COSSMAN
Globe Center AMS
Nestle - Global Business Excellence
(818) 549-7187
Joshua.Cossman@us.nestle.com

> Nestlé Makes the Very Best®
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