You will be happier with V6 in this regard.
Often this happens when you try to force discovery by the LAN interface,
which is
named, and netmon has already heard from the WAN interface, which is not.
When
that happens, and it makes two nodes, the solution is to delete the one
you don't
want and quickly demand-poll the one you do want. This usually goes
together
with warnings about duplicate IP addresses. Assuming you have snmp access
to
the router. Another thing you can do is add names for all interfaces (same
name).
This problem was at its worst in 5.1.2, I think. Netmon did not
consistently merge
nodes. It is a lot better in V6. Anybody know if it is also better in
V5.1.3?
That said, I don't understand your statement (and I have heard it before)
about
not wanting to discover by the WAN because it is more likely to go down and
you
don't want the whole router to go red due to a WAN interface being down.
People
have said that here before, and I don't understand it. The status of the
router is
the compound of all of the interfaces on the router. Each is evaluated
individually.
If it can be pinged, it is up, if not, it is down. If the WAN interface
goes down and
you have no other route to the rest of the interfaces, that router will be
red regardless
of which interface you discovered it by. There are lots of other things
affected by
which interface you discover by, like label, and which address is used with
some
of the menu functions, but the status of the router is not one of them as
far as I
understand it. But your goal is nonetheless correct, if only for naming
purposes.
Anybody care to straighten me out on this? I'm willing to learn...
Cordially,
Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
Detroit
"Ken Karasek" <KGKARASE@hewitt.com>@tkg.com on 06/19/2000 04:38:10 PM
Please respond to IBM NetView Discussion <nv-l@tkg.com>
Sent by: owner-nv-l@tkg.com
To: IBM NetView Discussion <nv-l@tkg.com>
cc:
Subject: [NV-L] One Router, Multiple Interfaces Displaying Multiple Router
Icons.
Hello all,
I am running NV v5.1.2 with AIX 4.2.1. I have noticed for some time that NV
is
displaying our Bay routers on the maps with multiple router icons. There is
only
one router per office with at least three interfaces. One LAN, one WAN, one
ISDN
backup (AD). I am using a seed file that has the IP address of the LAN
interface
listed since it's more likely a WAN interface will go down vs. a LAN
interface
and I didn't want the entire router to turn red for a WAN link going down.
There
are also DNS names for each router, but only assigned to the WAN interface
address. Not that it matters, but the DNS does not reside on the same
machine as
NV.
Why is/would NV display multiple router icons for the same single router? I
have
deleted/rediscovered and ran the database cleanups. This is quite
confusing/frustrating for our Command Center folks when it come to
identifying
problems with a router. Is there a configuration change(s) that I can make
to
correct the discovery/display?
Thanks.
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