Snmpget calls being Threadsafe

permalink · #1 (**permalink**) 10-31-2006

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Hi,

I am trying to poll certain MIB data from two IP addresses (2 machines)
at various intervals
These calls are handled by two different threads.

What I mean is, I create a thread pool to poll information from each of
the IP addresses.

The problem I face is:
1. If I am polling from only one IP address, things work pretty
fine. I get the responses at intervals set for the threads to execute
2. If I am polling from more than one IP address. The SNMP Get
calls work fine with One IP Address and for the rest of the IP
Addresses, it works fine just one time and then onwards returns any of
the possible error codes (SNMPGET Error codes) like say Param Missing,
TIMEOUT, OID not found etc etc. Basically snmpget call fails for the
second IP Address onwards.

3. However one observation in a two IP Address set up is that
whever I stop the polling from the first IP address for which the data
is being received at regular intervals, the second or the leftover IP
addresses starts responding properly henceforth.

I am not able to get why this problem is arising...
I use synchronization mechanism for my threads while they make the SNMP
calls.

Is SNMP API threadsafe??? Also can anybody be of help to resolve this
problem???
Please let me know if more inputs are needed...=20

Regards,
Sri.

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Hi,


I am trying to poll certain MIB =
data from two IP addresses (2 machines) at various intervals

 These calls are handled by two =
different threads.


What I mean is, I create a =
thread pool to poll information from each of the IP addresses.


The problem I face is:

         1.  If I am polling from only one IP address, =
things work pretty fine.  I get the responses at intervals set for =
the threads to execute

        2.  If I am polling from more than one IP =
address.  The SNMP Get calls work fine with One IP Address and for =
the rest of the IP Addresses, it works fine just one time and then =
onwards returns any of the possible error codes (SNMPGET Error codes) =
like say Param Missing, TIMEOUT, OID not found etc etc.  Basically =
snmpget call fails for the second IP Address onwards.

        3.  However one observation in a two IP =
Address set up is that whever I stop the polling from the first IP =
address for which the data is being received at regular intervals, the =
second or the leftover IP addresses starts responding properly =
henceforth.
 

I am not able to get why this =
problem is arising…

 I use synchronization mechanism =
for my threads while they make the SNMP calls.


Is SNMP API threadsafe??? Also =
can anybody be of help to resolve this problem???

 Please let me know if more =
inputs are needed… 


Regards,

 Sri.

 

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This e-mail, and =
any attachments thereto, are intended only for use by the addressee(s) =
named herein and may contain privileged and/or confidential information. =
If you are not the intended recipient of this e-mail, you are hereby =
notified that any dissemination, distribution or copying of this e-mail, =
and any attachments thereto, is illegal and strictly prohibited. If you =
have received this e-mail in error, please immediately notify me by =
telephone and permanently delete the original and any copy of any e-mail =
and any printout thereof.
 

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