Zabbix SNMP connection timeout to MIKROTIK router

[rpavlyuk]

Here's the problem I have. Recently, I've switched from old Linksys router to new MIKROTIK RB1100AHx2

Zabbix was monitoring my previous router via SNMP with no problems at all but once I've added a new MIKROTIK device, it refuses to connect to it saying that connection has timed out: Timeout while connecting to "192.168.1.1:161"

Here's what log file is saying:

$ sudo cat /var/log/zabbixsrv/zabbix_server.log | grep 192.168.1.1
   964:20160125:134519.003 error reason for "RV082:ifInOctets1" changed: Timeout while connecting to "192.168.1.1:161".
   968:20160125:134524.044 error reason for "RV082:ifDescr1" changed: Timeout while connecting to "192.168.1.1:161".
   937:20160125:141201.602 SNMP agent item "ifInOctets.3" on host "192.168.1.1" failed: first network error, wait for 15 seconds
   964:20160125:141202.517 item "192.168.1.1:ifOutOctets.2" became not supported: Timeout while connecting to "192.168.1.1:161".
   964:20160125:141202.517 item "192.168.1.1:ifOutOctets.3" became not supported: Timeout while connecting to "192.168.1.1:161".
   943:20160125:141222.705 SNMP agent item "mikrotik.uptime" on host "192.168.1.1" failed: another network error, wait for 15 seconds
   943:20160125:141243.923 SNMP agent item "ifOutOctets.9" on host "192.168.1.1" failed: another network error, wait for 15 seconds
   943:20160125:141308.119 temporarily disabling SNMP agent checks on host "192.168.1.1": host unavailable
   995:20160126:182113.905 SNMP agent item "ifOutOctets.2" on host "192.168.1.1" failed: first network error, wait for 15 seconds
  1016:20160126:182113.921 item "192.168.1.1:ifInOctets.3" became not supported: Timeout while connecting to "192.168.1.1:161".
  1016:20160126:182113.921 item "192.168.1.1:ifOutOctets.3" became not supported: Timeout while connecting to "192.168.1.1:161".
   996:20160126:182134.402 SNMP agent item "mikrotik.cpu.load" on host "192.168.1.1" failed: another network error, wait for 15 seconds
   996:20160126:182155.444 SNMP agent item "ifOutOctets.16" on host "192.168.1.1" failed: another network error, wait for 15 seconds
   996:20160126:182216.822 temporarily disabling SNMP agent checks on host "192.168.1.1": host unavailable

Definitely, host is available:

$ ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=0.210 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.174 ms
...

More over, snmpwalk work fine when trying to get values from the host:

$ snmpwalk -v 2c -c public 192.168.1.1 1.3 | head -20
SNMPv2-MIB::sysDescr.0 = STRING: RouterOS RB1100AHx2
SNMPv2-MIB::sysObjectID.0 = OID: SNMPv2-SMI::enterprises.14988.1
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (498000900) 57 days, 15:20:09.00
SNMPv2-MIB::sysContact.0 = STRING: RPAV
SNMPv2-MIB::sysName.0 = STRING: MikroTik
SNMPv2-MIB::sysLocation.0 = STRING: HOME-RACK-01
SNMPv2-MIB::sysServices.0 = INTEGER: 78
IF-MIB::ifNumber.0 = INTEGER: 15
IF-MIB::ifIndex.1 = INTEGER: 1
IF-MIB::ifIndex.2 = INTEGER: 2
IF-MIB::ifIndex.3 = INTEGER: 3
IF-MIB::ifIndex.4 = INTEGER: 4
IF-MIB::ifIndex.5 = INTEGER: 5
IF-MIB::ifIndex.6 = INTEGER: 6
IF-MIB::ifIndex.7 = INTEGER: 7
IF-MIB::ifIndex.8 = INTEGER: 8
IF-MIB::ifIndex.9 = INTEGER: 9
IF-MIB::ifIndex.10 = INTEGER: 10
IF-MIB::ifIndex.11 = INTEGER: 11
IF-MIB::ifIndex.12 = INTEGER: 12
...

This means that SNMP is enable on the router and SNMP port is not "firewalled".

Additional information
OS: Linux Fedora 23 x86_64
Software:

$ dnf list installed httpd zabbix* php* *snmp* mariadb*
Last metadata expiration check performed 0:01:29 ago on Thu Jan 28 14:17:05 2016.
Installed Packages
httpd.x86_64                                                                             2.4.18-1.fc23                                                                  @@commandline
mariadb.x86_64                                                                           1:10.0.21-1.fc23                                                               @@commandline
mariadb-common.x86_64                                                                    1:10.0.21-1.fc23                                                               @@commandline
mariadb-config.x86_64                                                                    1:10.0.21-1.fc23                                                               @@commandline
mariadb-errmsg.x86_64                                                                    1:10.0.21-1.fc23                                                               @@commandline
mariadb-libs.x86_64                                                                      1:10.0.21-1.fc23                                                               @@commandline
mariadb-server.x86_64                                                                    1:10.0.21-1.fc23                                                               @@commandline
net-snmp.x86_64                                                                          1:5.7.3-7.fc23                                                                 @fedora      
net-snmp-agent-libs.x86_64                                                               1:5.7.3-7.fc23                                                                 @fedora      
net-snmp-libs.x86_64                                                                     1:5.7.3-7.fc23                                                                 @@commandline
net-snmp-utils.x86_64                                                                    1:5.7.3-7.fc23                                                                 @fedora      
perl-Net-SNMP.noarch                                                                     6.0.1-14.fc23                                                                  @fedora      
php.x86_64                                                                               5.6.17-1.fc23                                                                  @@commandline
php-bcmath.x86_64                                                                        5.6.17-1.fc23                                                                  @@commandline
php-cli.x86_64                                                                           5.6.17-1.fc23                                                                  @@commandline
php-common.x86_64                                                                        5.6.17-1.fc23                                                                  @@commandline
php-gd.x86_64                                                                            5.6.17-1.fc23                                                                  @@commandline
php-ldap.x86_64                                                                          5.6.17-1.fc23                                                                  @@commandline
php-mbstring.x86_64                                                                      5.6.17-1.fc23                                                                  @@commandline
php-mysqlnd.x86_64                                                                       5.6.17-1.fc23                                                                  @@commandline
php-pdo.x86_64                                                                           5.6.17-1.fc23                                                                  @@commandline
php-pecl-jsonc.x86_64                                                                    1.3.9-1.fc23                                                                   @@commandline
php-snmp.x86_64                                                                          5.6.17-1.fc23                                                                  @updates     
php-snmp.x86_64                                                                          5.6.17-1.fc23                                                                  @updates     
php-xml.x86_64                                                                           5.6.17-1.fc23                                                                  @@commandline
zabbix.x86_64                                                                            2.4.7-1.fc23                                                                   @@commandline
zabbix-agent.x86_64                                                                      2.4.7-1.fc23                                                                   @@commandline
zabbix-dbfiles-mysql.noarch                                                              2.4.7-1.fc23                                                                   @@commandline
zabbix-server.noarch                                                                     2.4.7-1.fc23                                                                   @@commandline
zabbix-server-mysql.x86_64                                                               2.4.7-1.fc23                                                                   @@commandline
zabbix-web.noarch                                                                        2.4.7-1.fc23                                                                   @@commandline
zabbix-web-mysql.noarch                                                                  2.4.7-1.fc23                                                                   @@commandline

I have other hosts in my network that I monitor using SNMP from the same Zabbix Server and they work fine. The problem is just with MIKROTIK.

Any ideas why I'm getting this issue with connection timeout?

[ingus.vilnis]

Hello and welcome to Zabbix forums!

Timeout while connecting to "192.168.1.1:161"

Try increasing the Timeout= setting in zabbix_server.conf
Restart Zabbix server and see if that helps.

Best Regards,
Ingus

[xs-]

If you haven't tried already, disable 'use bulk requests' in the host's SNMP agent configuration.

It's possible the template you use for your Mikrotik device tries to query something the device doesn't support. Simpler MT devices don't have sensors for things like voltage, fan speed, temperature, etc.

When using bulk requests, it seems that a failure on one item applies to all. Not sure if this is something fixable in Zabbix or normal SNMP behaviour.

[victorhugopa]

Hello rpavlyuk, it's ok for you now?
I'm having the same problem here in mikrotik devices.

Zabbix 3.0.1 / Debian 8.4

[delisogoua]

configuration items imprimante brother

bonjour a tous
j'ai un probleme avec la configuration des items zabbix pour mon imprimante Brother L2360DW
aidez moi a le surveiller
en creant les :
-items snmp
-triggers
-actions
-conditions
-opérations
pour avoir des messages(alertes dans mon courriel) merci


Zabbix 3.0.1 / ubuntu 14.04 appliance

[acatic1]

I'm having the same issue with an Asus RT wireless router - snmpwalk is fine, but says snmp 'timed out'. I've unchecked 'use bulk requests', no help.
--------never mind; I just had to add the snmp community as a macro - {$SNMP_COMMUNITY} => [community name]. then go to 'configuration', 'hosts', click 'discovery' for the host, select it, and click 'check now'.