SNMP Trapd help

Hi,


I have the following problem and thought you can help me out. Apologies for
sending a direct email.

We have this requirement of storing,processing and then selectively
forwarding the traps.

I have around 20 traphandle statements(all of them calling the same handler)
in snmptrapd.conf and one default embeded perl handler.

What I have seen is that either some traps are dropped or a long delay in
processing. I have a very high volume of incoming traps. Would appreciate
your advise.

Here is my snmptrapd.conf


perl NetSNMP::TrapReceiver::register("default", \&my_receiver);
perl do "/usr/local/fnmt/bin/genericTrapHandler.pl";


#traphandle for snmpv2 traps
# traphandle .1.3.6.1* /usr/local/fnmt/bin/snmpv2_2ana_trap

#traphandle .1.3.6.1.4.1.18289* /usr/local/fnmt/bin/cmm2ana_trap

#traphandle for Infovista
traphandle .1.3.6.1.4.1.1899* /usr/local/fnmt/bin/iv2ana_trap

#traphandle for MWTM
traphandle 1.3.6.1.4.1.9.9.311* /usr/local/fnmt/bin/mwtm2ana_trap

#traphandle default /usr/local/fnmt/bin/trap2syslog



traphandle .1.3.6.1.4.1.236* /usr/local/fnmt/bin/gen_co_forward
traphandle .1.3.6.1.4.1.3631* /usr/local/fnmt/bin/gen_co_forward
traphandle .1.3.6.1.4.1.2281* /usr/local/fnmt/bin/gen_co_forward

traphandle .1.3.6.1.4.1.6642.815* /usr/local/fnmt/bin/gen_co_forward
traphandle .1.3.6.1.4.1.11858* /usr/local/fnmt/bin/gen_co_forward
traphandle .1.3.6.1.4.1.9608.9999* /usr/local/fnmt/bin/gen_co_forward
traphandle 1.3.6.1.4.1.16258* /usr/local/fnmt/bin/gen_co_forward
traphandle .1.3.6.1.4.1.16258* /usr/local/fnmt/bin/gen_co_forward
traphandle 1.3.6.1.4.1.6649* /usr/local/fnmt/bin/gen_co_forward
traphandle 1.3.6.1.4.1.7569* /usr/local/fnmt/bin/gen_co_forward
traphandle 1.3.6.1.4.1.9148* /usr/local/fnmt/bin/gen_co_forward
#traphandle .1.3.6.1.4.1.3902.3400.* /usr/local/fnmt/bin/gen_co_forward


And here is the traphandle


#!/usr/local/fnmt/bin/perl
#############################################################
# gen_co_forward
#
#
#
# Description :  This program should be called by snmptrapd via the
#     traphandler option.  This program will read STDIN input and convert
#     it to a syslog-ng log format.  It will then send the log message to
the
#     syslogng server listed in the global defines section.
#
#
#############################################################
use DBI;
use Socket;
use Sys::Hostname;
use Net::SNMP;
use Time::localtime;

# Global defines
$GEN_CO_HOST = "GEN_CO Server"
$FNMT_HOST = "HOST";
$GEN_CO_PORT= "1162";
$SESS_COMMUNITY="public";

#############################################################
#  Main code starts here
#############################################################
$tm = localtime;
my $YEAR=$tm->year+1900 ;
my $MONTH=$tm->mon+1 ;
my $DAY=$tm->mday ;
my $HOUR=$tm->hour ;
my $MIN=$tm->min ;
my $SEC=$tm->sec;
my $LOG_PATH="/FNMT_SAN_DISK/fnmt/logs";

my $hostname, $ipaddr, $agentaddress;
my $sysuptime, $oid, $value, $traptype, $trapdata, $msg, $oid_str;
my $validtrap = 0;
my @varBindArray;
my @varBindArraysam;
#open(LOGGER, ">>/usr/local/fnmt/logs/gen_co_forward.log");
#open(PIPE,">>/var/run/db.pipe");

my ($session, $error) = Net::SNMP->session(
           -hostname  => $GEN_CO_HOST,
           -community => $SESS_COMMUNITY,
           -port => $GEN_CO_PORT,
           -localaddr => $FNMT_HOST
  );
  if (!defined($session)) {
               `echo "ERROR: $error" >> $LOG_PATH/gen_co_forward.log`;
               exit 1;
  }

# process the trap:

# 1st line is the hostname


$hostname = <STDIN>;
chomp($hostname);

# 2nd line is the IP address

$ipaddress = <STDIN>;
chomp($ipaddress);
$ipaddress =~ s/(.*\[)(.*)(\].*)/$2/;
$agentaddress = $ipaddress;
$samsungIndex = -1;

# Loop through remaining lines.

while(<STDIN>) {

      ($oid, $value) = /([^\s]+)\s+(.*)/;

      # printf LOGGER "value pair $oid,$value\n ";

      # Process the trap PDU's.

    if ($oid =~ /sysUpTimeInstance|1.3.6.1.2.1.1.3.0/) {  # Store the uptime
         $sysuptime = $value;
    }
    elsif ($oid =~ /snmpTrapAddress.0|1.3.6.1.6.3.18.1.3.0/) { # Store real
source address

    if ($value !~ /^127\..*|^0\..*/) { # Make sure the address is valid.
            $agentaddress = $value;
     push(@varBindArray, ($oid,IPADDRESS, $value));
         }
    }

       elsif ($oid =~ /snmpTrapOID.0|1.3.6.1.6.3.1.1.4.1.0/) { # Store trap
type
         $traptype = $value;
     push(@varBindArray, ($oid,OCTET_STRING, $value));
        `echo "Trap snmpTrapOID-->".$value."\n" >>
$LOG_PATH/gen_co_forward.log`;

       }
       elsif ($oid =~ /snmpTrapOID.0|1.3.6.1.6.3.1.1.4.1/) { # Store trap
type
         $traptype = $value;
     push(@varBindArray, ($oid,OCTET_STRING, $value));
        `echo "Trap snmpTrapOID-->".$value."\n" >>
$LOG_PATH/gen_co_forward.log`;

      } elsif ($oid =~/^snmpTrapEnterprise|1.3.6.1.6.3.1.1.4.3/) { # check
the snmpTrapententerprice id
        $snmpTrapEnterpriseId=$value;
        push(@varBindArray, ($oid,OCTET_STRING, $value));
    }

       elsif ($oid !~ /snmpTrapCommunity.0|1.3.6.1.6.3.18.1.4/) {  # Store
the trap data values
    $value =~ s/"//g;
    $oid_str=$oid_str.",".$oid."=".$value;
    push(@varBindArray, ($oid,OCTET_STRING, $value));
    }

   } # end of while(stdin)

   #print LOGGER "\nTRAP ends here\n";

$specifictrap=26; #snmp epm-notification specific
$enterprise="1.3.6.1.4.1.239";
# Storing traps into DB
if(!(is_device_in_maintenance($agentaddress))){
$result = $session->trap(
             -enterprise => $enterprise,
             -agentaddr => $agentaddress,
             -generictrap => $specifictrap,
             -varbindlist => \@varBindArray
   );

`echo "Trap sent-->".$result."OID->".$oid_str."\n" >>
$LOG_PATH/gen_co_forward.log`;

if(length($oid_str) > 2000){
$oid_str = substr($oid_str,0,2000);
}
`echo "insert into trap_data
(id,host,hostname,fullhost,facility,PRIORITY,errorname,message,TIMESTAMP,SUPPRESSION_FLAG)
VALUES
(test_seq.nextval,'$agentaddress','$agentaddress','$agentaddress','local','info','$traptype','SNMPTRAP-$oid_str',to_date('$MONTH
$DAY $HOUR:$MIN:$SEC', 'mm dd hh24:mi:ss'),'0');\ncommit;\n" >
/var/run/db.pipe`;

}else{

print "\n Trap not stored in DB, for devices in maintanance";
`echo "Trap not sent-->OID->".$oid_str."\n" >>
$LOG_PATH/gen_co_forward.log`;

#print PIPE "insert into trap_data
(id,host,hostname,fullhost,facility,PRIORITY,errorname,message,TIMESTAMP,SUPPRESSION_FLAG)
VALUES
(test_seq.nextval,'$agentaddress','$agentaddress','$agentaddress','local','info','$traptype','SNMPTRAP-$oid_str',to_date('$MONTH
$DAY $HOUR:$MIN:$SEC', 'mm dd hh24:mi:ss'),'1');\ncommit;\n" or die("Unable
to write the trap details in db.pipe") ;
}

Thanks in advance.

Regards
Sateesh

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