RE: Querying SNMP from a different class IP

From: Maria Elena Vismara [mailto:[email protected]]
Sent: Thu 7/16/2009 7:24 AM


> in my society we would like having an SNMP/Monitor machine in a different
> class from other machines (let's say ip class A for the querying machine and
> class B for the others).

Why?  IP classes are an obsolete concept that never really meant5 anything anyway.

> I am trying to get this, but I have a big problem...I made all exceptions in
> firewalls, I installed snmp on clients and snmp + mrtg on the monitor
> machine, but I can not get a correct result...I always get a "snmpget:
> Timeout" or a "Timeout: No Response from ....".

> I am not skilled in snmp, so, I think that I missed something in the conf
> file or in the community...anyone has an idea?

First, have you tried accessing these instances from the same machine they are on?  If you can retrieve the instances at the source host using the external address, then the SNMP is configured correctly.  If you are using com2sec with source address restrictions, make sure that the source host of the requests is permitted to query.  Next, back your way out one jump at a time towards the host you can't reach your master agent from.  At some point you'll get timeouts - that is the gateway you need to poke a hole in.


HTH,

Mike

------------------------------------------------------------------------------
Enter the BlackBerry Developer Challenge  
This is your chance to win up to $100,000 in prizes! For a limited time, 
vendors submitting new applications to BlackBerry App World(TM) will have
the opportunity to enter the BlackBerry Developer Challenge. See full prize  
details at: http://p.sf.net/sfu/Challenge

_______________________________________________
Net-snmp-users mailing list
[email protected]
Please see the following page to unsubscribe or change other options:
https://lists.sourceforge.net/lists/listinfo/net-snmp-users