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[nv-l] Community String Indexing

To: nv-l@lists.tivoli.com
Subject: [nv-l] Community String Indexing
From: "Fission CC Lin" <flin@tw.ibm.com>
Date: Thu, 2 May 2002 11:50:37 +0800
Dear all,

  I got the same problem with the situation described below, what I would
ask is " could you give me a direction to script (detailed information)" ?
My customer wants to access the MIB variable as simple as click some menu
item (the MIB application Builder) and a poped-up message box will display
the result,but before this, he must manully change the community name by
SNMP Configuration to access the different device on the same IP address
(my case, WSM module on Nortel passport 8600).That's inconvenient!!!! Could
you give me a direction to script such that my customer can access the MIB
variable as simple as just click?

> Sent by:  owner-nv-l@tkg.com
>
> To:   nv-l@tkg.com
> cc:
> Subject:  [NV-L] Object that has multiple community names on the same IP
>
> Hello,
>
> i'have a problem with a netview 6.01 on an AIX 4.3.3 system. I have a
> device on my network that has only 1 IP Address, but reports different
> things every time you specify another community name. With the default
> community e.g. public i'm getting the ethernet statistics. If i use e.g.
> public@s1 i'm getting different things which are related with the first
> slot's connected devices (e.g. some wan interfaces).
>
> How can i modify this object and assign to it 2 (or more) community
> names?
> I've seen Sunnet Manager to do this and i was impressed....can Netview
> do this?
>
> Thanks in advance
>
> Dimitris Leventidis
>
> _________________________________________________________________________
> NV-L List information and Archives: http://www.tkg.com/nv-l

If you don't know already, this is called Community string Indexing and is
used to access MIBS that have multiple instances for a single MIB value.
Some switch  vendors use this to get stats for all the bridge interfaces on
a switch by just adding the @ sign followed by the port or VLAN number to
the single community name assigned to the entire device.  IE..
public@25
would read the bridge mib for VLAN25 or it could be a single port on a
board
IE..  public@3/1      for board 3 port 1.    If the device does not have
multiple instances of a MIB,  adding the @ does nothing and it will still
access the single instance of that MIB.    Also note that a trap sent from
a
multiple instance MIB should have the source attached as the instance with
the @ sign.

This is a very powerful feature to use if your device supports it.


So with a little scripting you could do what ever you want.


Jeff Fitzwater
OIT Systems & Networking
Princeton University

Best Regards,
Fission Lin, 林倩全
I / T Specialist  , Tivoli Professional Services,
ITS/SMBU/NSM,  IBM Taiwan
206, Sec.1 Keelung Rd, Taipei, Taiwan, R.O.C.
Tel:886-2-2725-8872, Mobile:0935-558622
E-Mail: flin@tw.ibm.com
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