RE: Maximum packet size exceeded in a request

#1 (**permalink**) 09-27-2005

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Is it possible running short of either memory or file descriptors could =
cause this "Maximum packet size exceeded in a request" problem?=20

________________________________

From: Fong Tsui
Sent: Mon 9/26/2005 9:43 PM
To: Fong Tsui; 'net-snmp-coders@lists.sourceforge.net'
Subject: RE: Maximum packet size exceeded in a request

The scenario is querying data in a loop on UDP by using getbulk, it =
works for a period of time. After a while, no data returns until restart =
snmpd and its subagents. It is hard to catch when this hanging happens. =
Only thing I can find in log file is "Maximum packet size exceeded in a =
request" from snmpd.

I checked the code, after this error happens, it will call callback =
function for NETSNMP_CALLBACK_OP_DISCONNECT and also close the session.

Since query is from UDP, so, this error should happen in communication =
between master and subagent. I am not sure what cause it. I am usning =
v5.0.9 on linux. The structure is a master with 3 subagents.

Does anybody have an idea where I should look into? I am really in the =
dark and hope experts can give some suggestion.

Thanks,

FT

-----Original Message-----
From: net-snmp-coders-admin@lists.sourceforge.net =
[mailto:net-snmp-coders-admin@lists.sourceforge.net] On Behalf Of Fong =
Tsui
Sent: Monday, September 26, 2005 2:33 PM
To: net-snmp-coders@lists.sourceforge.net
Subject: RE: Maximum packet size exceeded in a request

It seems there is a bug in agentX for exceed maximum packet size (verion
5.0.9).

Does anybody have a clue and fix?

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<DIV id=3DidOWAReplyText89562 dir=3Dltr>=0A=
<DIV dir=3Dltr>Is it =
possible running short =0A=
of either memory or file descriptors could cause this "Maximum =0A=
packet size exceeded in a request" problem? </DIV></DIV>=0A=
<DIV dir=3Dltr> =0A=
<HR tabIndex=3D-1>=0A=
From: Fong Tsui Sent: Mon =
9/26/2005 =0A=
9:43 PM To: Fong Tsui; =0A=
'net-snmp-coders@lists.sourceforge.net' Subject: RE: Maximum =
packet =0A=
size exceeded in a request </DIV>=0A=
<DIV>=0A=
The scenario is querying data in a loop on UDP by =
using getbulk, =0A=
it works for a period of time. After a while, no data returns until =
restart =0A=
snmpd and its subagents. It is hard to catch when this hanging happens. =
Only =0A=
thing I can find in log file is "Maximum packet size exceeded in a =
request" from =0A=
snmpd. I checked the code, after this error happens, it will call =0A=
callback function for NETSNMP_CALLBACK_OP_DISCONNECT and also close the =0A=
session. Since query is from UDP, so, this error should happen in =0A=
communication between master and subagent. I am not sure what cause it. =
I am =0A=
usning v5.0.9 on linux. The structure is a master with 3 =
subagents. Does =0A=
anybody have an idea where I should look into? I am really in the dark =
and hope =0A=
experts can give some =0A=
suggestion. Thanks, FT -----Original =0A=
Message----- From: net-snmp-coders-admin@lists.sourceforge.net [<A =0A=
href=3D"mailto:net-snmp-coders-admin@lists.sourceforge.net">mailto:net-sn=
mp-coders-admin@lists.sourceforge.net</A>] =0A=
On Behalf Of Fong Tsui Sent: Monday, September 26, 2005 2:33 =
PM To: =0A=
net-snmp-coders@lists.sourceforge.net Subject: RE: Maximum packet =
size =0A=
exceeded in a request It seems there is a bug in agentX for =
exceed =0A=
maximum packet size (verion 5.0.9). Does anybody have a clue =
and =0A=
fix? </DIV>=0A=
=0A=
</BODY>=0A=
</HTML>
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