The Nexus device has an SNMP agent running which is listening on port 161/UDP.
This is what you do when you issue a snmpwalk or snmpget command. The monitoring application sends requests to your Nexus device. If there is no file check SELinux status: sestatusĪlso the zabbix server log should contain this trap: cat /var/log/zabbix/zabbix_server.logĪppendix: Check SELinux errors: grep denied /var/log/audit/audit.Ok, first of all, there are two concepts with SNMP, the first one is polling for data to get data from sensors or discover elements from your device. 1.3.6.1.6.3.1.1.5.4 s "eth0"Īfter this command there should be instant content into: cat /tmp/zabbix_traps.tmp
zabbix-*/misc/snmptrap/zabbix_trap_ /usr/binĬhmod +x /usr/bin/zabbix_trap_Ĭp /etc/snmp/ Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name This will show: Active Internet connections (only servers) Install 'netstat' command: yum -y install net-toolsĬheck the listening ports: netstat -tulpn Install SNMP trap listener: yum install -y net-snmp-utils net-snmp-perl net-snmpĮnable and strart the service: systemctl enable snmptrapd Open SNMP trap listener port 162 in firewall: firewall-cmd -add-port=162/udp -permanent
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