Re: Timeout while DNS lookups fail

Pete Kelly <[email protected]>
Newsgroups gmane.network.net-snmp.user
Message-ID <[email protected]>
I don't follow the "Try specifying infosink or trapess by IPaddress" 
comment.  Is this referencing net-snmp configuration settings?

There is nothing on the machine on which net-snmp is running, that 
references either an IP address or a name for the trap senders 
specifically to try and eliminate any DNS lookups.  That includes hosts, 
bind, or resolv.conf.

Thanks,
Pete

Nikos Balkanas wrote:
> Try specifying infosink or trapess by IPaddress. It shouldn't query DNS 
> if address is already in dotted format.
> 
> Cheers,
> Nikos
> ----- Original Message ----- From: "Pete Kelly" <[email protected]>
> To: <[email protected]>
> Sent: Tuesday, December 30, 2008 1:37 AM
> Subject: Timeout while DNS lookups fail
> 
> 
>> Greetings:
>>
>> We are using the tools to collect traps from telephone network
>> equipment, think cabinet along the highway, where there are lots (could
>> be hundreds or thousands) of devices, none of which have a reverse DNS
>> lookup entry.
>>
>> There appears to be a mechanism where, with no named running (not
>> installed) and with an empty resolv.conf file, the traps get delayed
>> while a reverse DNS query times out.  There appears to be little or no
>> delay when there are few traps but with numerous devices and many traps
>> the delay can get quite lengthy.
>>
>> Is there a setting to disable this behavior in net-snmp?
>> or
>> Is this even a behavior of net-snmp but rather is it related to the
>> operating system?
>>
>> Thanks,
>> Pete
>> -- 
>> Pete Kelly
>> Cordell Inc.
>> 909-971-9100
>>
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