On Thu, Oct 4, 2012 at 4:28 PM, Joan Landry <joan.lan...@overturenetworks.com> wrote: > Thanks for this - this did make the problem go away - however this is not a > workable solution since this serializes every oid per input packet. > > Does anyone know if there is a solution that does not require the overhead of > serializing every oid in a packet? > > Have you reported this as a bug?
We haven't; due to the structure of our code it was hard to provide a replication case, and the serialization handler was acceptable overhead to us. > If not can someone tell me how to raise this issue to the net-snmp code > developers? http://www.net-snmp.org/bugs/ Bill > > Thanks > > > -----Original Message----- > From: Bill Fenner [mailto:fen...@gmail.com] > Sent: Thursday, October 04, 2012 10:12 AM > To: Joan Landry > Cc: net-snmp-users@lists.sourceforge.net > Subject: Re: row merge issue -possible bug > > On Wed, Oct 3, 2012 at 5:32 PM, Joan Landry > <joan.lan...@overturenetworks.com> wrote: >> I am seeing an issue (possible bug) in the code where a getnext row merge >> results in the wrong result. Code uses row_merge helpers. >> >> Does the incoming request need to be sequentially numbered oid's to work or >> is this a bug in net-snmp? >> >> This fails to get the correct result: >> snmpgetnext -c public -v 2c x.x.x.x >> 1.3.6.1.4.1.4444.2.11.1.2.1.1.11.1 >> 1.3.6.1.4.1.4444.2.11.1.2.1.1.10.1 >> >> SNMPv2-SMI::enterprises.4444.2.11.1.2.3.1.2.1 = STRING: "Main board" >> SNMPv2-SMI::enterprises.4444.2.11.1.2.3.1.2.1 = STRING: "Main board" >> >> This works: >> >> snmpgetnext -c public -v 2c x.x.x.x >> 1.3.6.1.4.1.4444.2.11.1.2.1.1.10.1 >> 1.3.6.1.4.1.4444.2.11.1.2.1.1.11.1 >> >> SNMPv2-SMI::enterprises.4444.2.11.1.2.1.1.11.1 = "" >> SNMPv2-SMI::enterprises.4444.2.11.1.2.3.1.2.1 = STRING: "Main board" > > Disclaimer: I know *nothing* about the row_merge helper. > > When using table_iterator, we found that it would mishandle multiple requests > in ordered tables, if the requests were ordered "backwards" > as you found. E.g., > > snmpget -v 2c -c public blue ifInOctets.43 ifInOctets.44 > IF-MIB::ifInOctets.43 = Counter32: 483792666 > IF-MIB::ifInOctets.44 = Counter32: 1470706044 > > vs. > > snmpget -v 2c -c public blue ifInOctets.44 ifInOctets.43 > IF-MIB::ifInOctets.44 = Counter32: 1474004919 > IF-MIB::ifInOctets.43 = No Such Instance currently exists at this OID > > We found that injecting the netsnmp_get_serialize_handler resolved our > problem. Again, I know nothing about the row_merge helper, so I don't know > if injecting the serialize handler is a significant performance hit for you. > > Bill > >> >> >> >> This email and attachments may contain privileged or confidential >> information intended only for the addressee(s) indicated. The sender does >> not waive any of its rights, privileges or protections respecting this >> information. 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