The .1 should not resolve to RouterA or RouterB. It might resolve to
something else with no problem. The .2 and .3 should resolve to RouterA
and RouterB respectively. And in the seedfile you should put the entry
%10.x.x 1
This directive will remind netmon that this is an HSRP address.
You might also put this entry in the seefile
10.x.x.1
This seed entry will force netmon to discover the address. Then it will
handle it correctly. It will do an snmpget of the sysname via that address
and see that it is currently connected to RouterA (or RouterB). Then it
will check RouterA (or RouterB) and see that it is not in that device's
address table, so it will flag it as HSRP and it will check it (via
snmpget)
every 5 minutes to see which device it is connected to now, and delete/add
it as necessary.
Note that you should NOT let netmon decide to poll those two routers via
SNMP,
since the HSRP inteface won't be in the interface table. It will only try
to
do it if it finds an unnumbered serial interface on it that is connected to
something else. If it does make that decision, you will be able to tell
because
the results of a demandpoll will show snmp status for the interfaces. You
then
will have to override that decision in the seedfile with the ^xx.xx.xx.xx
directive. If you have both HSRP and unnumbered serial on the same device,
you
have to choose which you want to manage.
And be sure you are on current code. HSRP handling has gotten better with
every release.
Cordially,
Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
(248) 552-4968 Voicemail, Fax, Pager
McGuire Larry G
<Larry.G.McGuire@ To: "NV List (E-mail)"
<nv-l AT lists.tivoli DOT com>
irs.gov> cc:
Subject: RE: [nv-l] How to
handle HSRP addresses in DNS.
01/17/2003 02:40
PM
What is the proper set of DNS entries for this setup?
RouterA - 10.x.x.2
RouterB - 10.x.x.3
Shared HSRP - 10.x.x.1
Is there a DNS entry for 10.x.x.1? and how should it be entered since this
address 'floats'?
Larry G McGuire
Systems & Network Admin.
M:I:F:SMC, Systems Management Center
Phone: 512-460-8858
-----Original Message-----
From: Westphal, Raymond [mailto:RWestphal AT erac DOT com]
Sent: Wednesday, November 06, 2002 11:56 AM
To: 'John.Boswell AT us.ngrid DOT com'; NV List (E-mail)
Subject: RE: [nv-l] How to handle HSRP addresses in DNS.
Yes. They are all in the netmon.seed file.
Thanks John.
-----Original Message-----
From: John.Boswell AT us.ngrid DOT com [mailto:John.Boswell AT us.ngrid DOT com]
Sent: Wednesday, November 06, 2002 10:23 AM
To: Westphal, Raymond
Subject: Re: [nv-l] How to handle HSRP addresses in DNS.
Have you added all your hsrp ip's to your Monitor special devices\Monitor
HSRP Interfaces under the netmon seed editor???..Unfortunately you have to
manually add each ip address individually....but it will clear up those
type of issues......
From: "Westphal, Raymond" <RWestphal AT erac DOT com> on 11/06/2002 09:43 AM
To: "NV List (E-mail)" <nv-l AT lists.tivoli DOT com>
cc:
Subject: [nv-l] How to handle HSRP addresses in DNS.
Hello Everyone.
NV 7.1.3 on AIX 4.3.3 ML10.
When I run my weekly database cleanup job, ovtopofix routinely complains of
a router that needs to be deleted. I think I may have discovered the reason
for the problem this morning. NV had 8 router objects on the map for this
single router. In all but one of the objects, the Selection Name of the
router was one of the HSRP virtual IP addresses.
As an experiment, I added all the HSRP IP addresses to the /etc/hosts file
with the same name, such as bldgx-router-hsrp. I then demand polled each of
the 8 objects. All of the duplicate objects were deleted and the single
router with the correct Selection Name remained.
I know it is recommended that each interface be in the DNS. The question is
this how to handle the dozen(s) of HSRP virtual IP addresses on all my
routers?
Thanks,
Ray Westphal
Enterprise Rent-A-Car
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