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Réf. : RE: Object Label

To: nv-l@lists.tivoli.com
Subject: Réf. : RE: Object Label
From: thierry.van-mol@ciev.vd.ch
Date: Mon, 25 Jun 2001 10:37:03 +0200
I am confused with Don Davis mail:

- in the manuals of Campus Manager (part of CiscoWorks 2000) Cisco System
  says that you should have all interfaces that resolves to the same
  name (maybe you are referencing another configuration guide of Cisco)

- in our network, we always had different DNS names for all the interfaces
  of every router. This is useful if you do a traceroute. We have
  about 450 routers, but I have never seen Netview ending up with
  multiple routers due to this DNS configuration.

Is it really a Netview requirement to have all the interfaces resolving to
the same name? If there is some good reason, I am ready to change my
DNS configuration.


Thierry






On 22.06.2001 20:15:07 "Davis, Donald" wrote:
>The  Interface LABEL will never display anything other that the IP Address
of
>that  interface.
>The  event log will display the resolved name of the Router (not
interface) if
>it can be resolved.
>If  your DNS has different names for each interface on a router (as Cisco
>Systems  suggests) then you MUST prevent NetView from
>using  DNS for those IP Addresses. You will end up with multiple routers
where
>only one should be drawn.
>DNS  overrides NetView's logic as to what interfaces belong to a
particular
>device.
>
>My  recommendation is:
>If you have multiple names for the same router in DNS, fix your  DNS.
>Get  those "unique interface names" out of there or NetView will be
severely
>confused.
>Do not  allow NetView to use a DNS for those routers!
>Override it as I previously suggested with /etc/hosts and
/etc/netsvc.conf.
>
>If you  do not or cannot (politics) manage your DNS, then this is your
only
>solution.
>Example etc/hosts file:
>
>10.1.1.1  ciscoXYZ    #  Main IP  Address
>10.2.1.1  ciscoXYZ    #   Serial2/0
>10.3.1.1  ciscoXYZ    #   Serial2/1
>10.4.1.1  ciscoXYZ    #  FastEthernet0/0
>10.5.1.1   ciscoXYZ    #  FastEthernet1/0
>10.6.1.1   ciscoXYZ    #  FastEthernet3/0
>
>Note that every interface on router ciscoXYZ resolves  to the same
hostname !!!
>This is VERY important !!!
>
>James, Feel free to jump in here...  :)
>
>Don Davis
>
>
>-----Original Message-----
>From: Stamper, Steve  [mailto:Steve_Stamper@foremost.com]
>Sent: Friday, June 22, 2001  12:54 PM
>To: 'IBM NetView Discussion'
>Subject: RE: [NV-L]  Object Label
>
>
>Ya  but....  What if you have specific interfaces with labels in the  DNS?
How
>can you get the interface to pickup the Name and not the IP  Address?
>
>
>
>Thanks² - Steve Stamper
>
>-----Original Message-----
>From: Davis, Donald  [mailto:donald.davis@firstcitizens.com]
>Sent: Friday, June 22,  2001 11:11 AM
>To: 'IBM NetView Discussion'
>Subject: RE:  [NV-L] Object Label
>
>
>Santosh,
>Placing an entry in /etc/hosts will cause NetView to update the  selection
name
>when the node is demand (or configuration)  polled.
>When you demand poll the node after putting the sysname in  /etc/host, you

>should see "New name found ...." in the output  window.
>The label of the node will change to this new name. The label of the
interface
>itself will Always be the IP Address.
>I  have been told that the label change may not happen immediately,
depending
>how busy NetView is doing other things.
>
>This entry in /etc/hosts will cause the  SelectionName and thus the label
to be
>updated with  "SuperXyzRouter".
>/etc/hosts
>10.2.3.123     SuperXyzRouter   #  Comment
>
>Be  certain that you have an /etc/netsvc.conf file and it is configured
like
>this:
>
>/etc/netsvc.conf
>hosts=local,bind4
>
>(The number after bind is the version of bind that you are  running.)
>If  you have not configured /etc/resolv.conf for a nameserver, the
netsvs.conf
>file is not needed.
>This will cause the OS to check /etc/hosts before going to  DNS.
>
>Don Davis
>
>
>-----Original Message-----
>From: z_esm_karekars  [mailto:z_esm_karekars@bharatpetroleum.com]
>Sent: Friday, June  22, 2001 4:00 AM
>To: 'IBM NetView Discussion'
>Subject:  RE: [NV-L] Object Label
>
>
>
>Hi Don,
>
>Can U please be little clear on this, I  could enter the Interface IP
addresses
>in /etc/hosts file locally ( Infact  I had done it earlier but could not
work
>on that more that time. I tried  demand poll after I did the same which
did not
>helped me) How will the  interface pickup the Name from hosts file then,
please
>advice.
>
>Regards,
>Santosh
>
>----------
>From:   Davis,  Donald[SMTP:donald.davis@firstcitizens.com]
>Reply To:        IBM NetView Discussion
>Sent:   Thursday, June 21, 2001 7:47 PM
>To:     'IBM  NetView Discussion'
>Subject:        RE: [NV-L] Object Label
>
>Santosh,
>NetView does NOT do this natively (like  HP OpenView does). NetView uses
only
>the resolved name.
>The workaround is to write a script that  does an SNMPGET for the sysName
and
>writes it to /etc/hosts so that  NetView can resolve to that insted of the
DNS
>name. You will need to  modify /etc/netsvcs.conf so that local comes
before
>bind.
>
>
>Don  Davis
>
>-----Original Message-----
>From: z_esm_karekars [mailto:z_esm_karekars@bharatpetroleum.com]
>Sent: Thursday, June 21,  2001 9:59 AM
>To: 'nv-l@tkg.com'
>Subject: [NV-L] Object Label
>
>
>Hi,
>
>I had Netview 6.0.1 on AIX  4.3.3.
>
>How can the Router Interfaces pick up the  System Description
>"RouterName:I/FName" in place of IP address which  comes by default.
>
>It's very very urgent.
>
>Regards,
>Santosh
>
>
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