Print mib name from mib values ​​in perl

Question

This is the code I used to go through the table in net:snmpusing perl:

      #! /usr/local/bin/perl

      use strict;
      use warnings;

      use Net::SNMP qw(:snmp);

      my $OID_hrSystem = '1.3.6.1.2.1.25.1';
      my $OID_ifPhysAddress = '1.3.6.1.2.1.2.2.1.6';        

      my ($session, $error) = Net::SNMP->session(
         -hostname    => shift || 'localhost',
         -community   => shift || 'public',
         -nonblocking => 1,
         -translate   => [-octetstring => 0],
         -version     => 'snmpv2c',
      );

      if (!defined $session) {
         printf "ERROR: %s.\n", $error;
         exit 1;
      }

      my %table; # Hash to store the results

      my $result = $session->get_bulk_request(
         -varbindlist    => [ $OID_hrSystem ],
         -callback       => [ \&table_callback, \%table ],
         -maxrepetitions => 10,
      );

      if (!defined $result) {
         printf "ERROR: %s\n", $session->error();
         $session->close();
         exit 1;
      }

      # Now initiate the SNMP message exchange.

      snmp_dispatcher();

      $session->close();

      # Print the results, specifically formatting ifPhysAddress.

      for my $oid (oid_lex_sort(keys %table)) {
         if (!oid_base_match($OID_ifPhysAddress, $oid)) {
            printf "%s = %s\n", $oid, $table{$oid};                 
         } else {                                   
            printf "%s = %s\n", $oid, unpack 'H*', $table{$oid};
         }                                      
      }

      exit 0;

      sub table_callback
      {
         my ($session, $table) = @_;

         my $list = $session->var_bind_list();

         if (!defined $list) {
            printf "ERROR: %s\n", $session->error();
            return;
         }

         # Loop through each of the OIDs in the response and assign
         # the key/value pairs to the reference that was passed with
         # the callback.  Make sure that we are still in the table
         # before assigning the key/values.

         my @names = $session->var_bind_names();
         my $next  = undef;

         while (@names) {
            $next = shift @names;
            if (!oid_base_match($OID_hrSystem, $next)) {
               return; # Table is done. chakri
            }
            $table->{$next} = $list->{$next};
         }

         # Table is not done, send another request, starting at the last
         # OBJECT IDENTIFIER in the response.  No need to include the
         # calback argument, the same callback that was specified for the
         # original request will be used.

         my $result = $session->get_bulk_request(
            -varbindlist    => [ $next ],
            -maxrepetitions => 10,
         );

         if (!defined $result) {
            printf "ERROR: %s.\n", $session->error();
         }

         return;
      }

Output:

1.3.6.1.2.1.25.1.1.0 = 1 hour, 12:00.77

1.3.6.1.2.1.25.1.2.0 =  
                        +

1.3.6.1.2.1.25.1.3.0 = 1536

1.3.6.1.2.1.25.1.4.0 = BOOT_IMAGE=/boot/vmlinuz-3.0.0-14-generic root=UUID=5c4c8d22-3cea-4410-aaad-f297c75d217e ro quiet splash vt.handoff=7

1.3.6.1.2.1.25.1.5.0 = 1

1.3.6.1.2.1.25.1.6.0 = 133

1.3.6.1.2.1.25.1.7.0 = 0

But the required output for me is as follows:

hrSystemUptime.0 = 1:08:54.36

hrSystemDate.0 = 2011-12-14,16:0:2.0,+1:0

hrSystemInitialLoadDevice.0 = 1536

hrSystemInitialLoadParameters.0 = "BOOT_IMAGE=/boot/vmlinuz-3.0.0-14-generic root=UUID=5c4c8d22-3cea-4410-aaad-f297c75d217e ro quiet splash vt.handoff=7"

hrSystemNumUsers.0 = 1

hrSystemProcesses.0 = 133

hrSystemMaxProcesses.0 = 0

The main thing in the output is that I want the mib names to be printed in the output instead of the mib values

Answer 1

You can use SNMP-module (available in Ubuntu like libsnmp-perl), which offers a tied hash loaded with the MIB, %SNMP::MIB. Here is a sample code:

use SNMP;
SNMP::initMib();
print "$SNMP::MIB{'1.3.6.1.2.1.25.1.1.0'}{label} = \n";
#Should print "hrSystemUptime = "

%SNMP::MIB - , , .. my $oid = $SNMP::MIB{$oidstr}. .

, MIB, , , hrSystemDate. , . mib_api, MIB. , , , .

Answer 2

snmpget ? snmpget CLI, :

:/usr/local/bin/snmpget -O Q -v 2c -c x.x.x.x.1.3.6.1.2.1.31.1.1.1.6.100663301 IF-MIB:: ifHCInOctets.100663301 = 152528664859348

, PERL LIB. .

, tou snmptranslate OID:

:/usr/local/bin/snmptranslate 1.3.6.1.2.1.25.1.1

HOST-RESOURCES-MIB:: hrSystemUptime

→ http://www.net-snmp.org/wiki/index.php/TUT:snmptranslate

:

my $pathSnmpTranslate = '/your/path/to/snmptranslate';  

for my $oid (oid_lex_sort(keys %table)) {  
    my $oidTrans = `$pathSnmpTranslate $oid`;  
    if (!oid_base_match($OID_ifPhysAddress, $oid)) {  
        printf "%s = %s\n", $oidTrans, $table{$oid};  
    } else {    
        printf "%s = %s\n", $oidTrans, unpack 'H*',$table{$oid};  
    }  
 }  

:

> /xxx % /usr/local/bin/snmptranslate 1.3.6.1.2.1.25.1.1
HOST-RESOURCES-MIB:: hrSystemUptime

> /xxx % /usr/local/bin/snmptranslate 1.3.6.1.2.1.25.1.1.0
HOST-RESOURCES-MIB:: hrSystemUptime.0