[snmp] wanted Information regarding the PORT from which Inform Response is sendout

[Birgit Arkesteijn]

Hi Gejo,

This sounds like an omission on the stack.
Currently the stack receives the incoming Inform on a ListeningContext
and sends a response on a new SnmpXContext. 

It should (somehow) go back over the receiving ListeningContext. We
would have to look at how to do that best: 

The ListeningContext will need some send functionality, but to avoid
duplicity, the SnmpXContext should still be used to encode the packet
but NOT send it.  

This will take us a couple of days to design, fix and test.
Unfortunately, it's not likely to happen soon, unless your company would
commission us.

Cheers, Birgit
 
ps Love your signature!


On Wed, Nov 15, 2006 at 11:34:30AM +0530, Gejo.Thayil at aricent.com wrote:
> Hi,
> 
>         I'm using the Westhawk version 4_13 for a simulator to test the 
> SNMP functionalities, however since this stack didn't support Inform 
> Response, so i had to modify this stack a bit so that it sends response to 
> Notifications. now its observed that even if I receive an INFORM 
> notification on port 162 (or any other defined port, that is known to the 
> agent), the stack sends out RESPONSE from any dynamic port(not from port 
> 162/ or the port on which it received the INFORM).
> 
> I checked it in your latest version 5_1, it also does it in the same way, 
> ie sends the RESPONSE to an INFORM from any dynamic port.
> 
> This works fine until IPSec is enabled between the SNMP Manager and Agent, 
> It is found that due to the received and sending PORT mismatch the 
> RESPONSE to the INFORM is not reaching the Agent (We are sending the 
> Response to the same port from which INFORM has come),  it is seen from 
> ethereal that Westhawk Stack is sending out Responses to the INFORMs.
> 
> can you guide me what i should do to send the Response from the Received 
> port itself (In case of INFORM)
> 
> 
> 
> 
> Regards
> 
> Gejo Joseph
> Flextronics Software Systems
> 18/1, Outer Ring Road
> Panathur Post, Bangalore
> 
> "I would love to change the world, but no one would give me the source 
> code"


-- 
-- Birgit Arkesteijn, birgit at westhawk.co.uk,
-- Westhawk Ltd, Albion Wharf, 19 Albion Street, Manchester M1 5LN, UK
-- tel.: +44 (0)161 237 0660
-- <URL: http://www.westhawk.co.uk>