RE: Agentx and multiple copies of same mibs - distributed control plane

Hi,

If you are using SNMPv3, you can make use of the context strings. Each
subagent can use a unique context string in the Agentx register pdu for
the table. While retrieving the table data, you need to mention the
context string in the request   so that the master agent forwards it to
the concerned subagent.


Regards,
Suresh.



-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of
[email protected]
Sent: Tuesday, March 21, 2006 6:10 AM
To: [email protected]
Subject: Agentx and multiple copies of same mibs - distributed control
plane


Hi,

I'd like to implement the following mibs in agentx subagents. 

  Agent MIB code:             mibII ucd_snmp snmpv3mibs notification
target agent_mibs agentx utilities

Each sub agent resides on a separate ppc core within a stacked ethernet
switch and talks in-band to 
a master agent running on a more capable ppc on a management controller.
The master agent controller has an interface to the outside world and it
is this which will accept incoming snmp requests. The agent X protocol
runs on an private class C network internal to the switch chassis and
switching asics.

I need some pointers on how to modify these standard mibs so that each
instance of these mibs on a sub-agent (if-mib in particular) has a
unique OID. I want to get to a point where I can walk though multiple
copies of the same mib - each copy pertaining to a unique switch asic -
but only connecting to a single master agent.

I have the agentx registration working - but since all mibs have the
same OID - when I walk through the results I only see one instance. 

The description under "Tables" describes what I want to do. What I'd
like advice on is how to achieve this.

http://www.freesnmp.com/net-snmp/faqs/#multidev

Many thanks

Lee Porter




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