We has a problem adding a new device (APC UPS Model: Smart-UPS X 3000 with Web/SNMP Management Card) to MNIS using SNMP v3.
Testing our connection details using "snmpwalk " was successful, here we can see the output:
...
As part of the debug process, we are using the following script to test the interaction between Net::SNMP and the device.
We also made sure that "Crypt::DES" and "Digest::HMAC" packages were installed on our server.
SNMP test script Test script:
| Code Block | ||||||||
|---|---|---|---|---|---|---|---|---|
| ||||||||
#!/usr/bin/perl
use strict;
use warnings;
use Net::SNMP;
use Data::Dumper;
my $hostname = 'APC_UPS_SMART_X_3000'; # IP or hostname
my $username = 'myUserName';
my $authpasswd = 'myAuthPassword';
my $authproto = 'SHA'; # SHA | MD5
my $privpasswd ='myPrivPassword';
my $privproto = 'DES'; # DES | AES
my $port = '161';
my $maxmsgsize = '1472'; #range (484..65535)
(my $session, my $error) = Net::SNMP->session(
-hostname => $hostname,
-port => $port,
-version => 3,
#-community => $community, # v1/v2c
-username => $username, # v3
-authpassword => $authpasswd, # v3
-authprotocol => $authproto, # v3
-privpassword => $privpasswd, # v3
-privprotocol => $privproto, # v3
-debug => '0x10',
-maxmsgsize => $maxmsgsize,
);
if (!defined $session) {
printf "ERROR %s.\n", $error;
exit 1;
}
for (my $i=1; $i<10; $i++){
print Dumper($session->get_next_request(-varbindlist => ["1.3.6.1.2.1.1.$i"]));
} |
...
The Net::SNMP module uses the procedure outline before to perform the discovery.
In this case it looks like the APC UPS does not enforce timeliness checking and is not responding with a usmStatsNotInTimeWindows Report-PDU during the discovery process. Causing the discovery process to return the error message and terminate the communication.
...
- User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3) - https://tools.ietf.org/html/rfc3414
- Bug #75191 for Net-SNMP: Synchronize in SNMPv3 - https://rt.cpan.org/Public/Bug/Display.html?id=75191
- Bug #55088 for Net-SNMP: SNMPv3 Synchronization hangs with some agents and has one unnecessary packet exchange with net-snmp agent - https://rt.cpan.org/Public/Bug/Display.html?id=55088
- Reference record for OID 1.3.6.1.6.3.15.1.1.4 - http://oidref.com/1.3.6.1.6.3.15.1.1.4
Related Information: