port 161/162 not listening on ITA - Systems Management Forum - Servers - Dell Community

port 161/162 not listening on ITA


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port 161/162 not listening on ITA

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on my ITA host, snmp is started but port 161/162 is not listening. any idea why?

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  • yes just sent and snmp test alert to my ita and it did not receive it

  • http://www.dell.com/support/Manuals/us/en/555/Product/dell-opnmang-it-asst-v8.9.1

    This manual has the details about configuring SNMP. Page 258 onwards.


    Hope this helps


  • Usually the first place to look is the SNMP service.  ITA does not directly communicate via 161/162, it just uses the service.  Also, make sure you have open communication with 161/162 UDP.  Setting the right community string and destination address in the service will usually get it done.

  • ok but how should i test my snmp alert from the esxi host to the ITA?

  • Here is an extract from the ITA UG for setting up SNMP on ESX servers and sending a trap :

    Page 268

    Setting Up SNMP on VMware ESX Server 4.0 and Later For Discovery

    1 Download the VMware remote command line interface tool (RCLI) from

    the VMware website at www.vmware.com. You can download either a

    Virtual Appliance, RCLI tools for Linux, or RCLI tools for Windows

    operating system.

    2 Run the following command on the VMware ESX Server to configure

    SNMP from RCLI:

    vicfg-snmp --server <ESX_IP_addr> --username root --password <password> -c <community name> -p X -t <ITA_IP_Address>@162/<community name>

    Where X represents an unused port.

    NOTE: Multiple IT Assistant IP addresses can also be mentioned using a comma-separated list.

    3 Stop the SNMP service if it is already running on your system:

    Service snmpd stop

    4 Add the following line at the end of the /etc/snmp/snmpd.conf:

    proxy -v 1 -c public udp: .



    X represents the unused port specified above, while configuring SNMP.

    trapsink <IT Assistant_IP_Address> <community_name>

    trapsink is required to send traps defined in the proprietary MIBs.

    5 Run the following command to enable SNMP for VMware ESX Server:

    vicfg-snmp --server <ESX_IP_addr> --username root --password <password> -E

    6 Run the following command to view the configuration:

    vicfg-snmp --server <ESX_IP_addr> --username root --password <password> -s

    7 Restart mgmt-vmware. This takes a few minutes before the service is started.

    service mgmt-vmware restart

    8 Restart the SNMP service.

    Service snmpd start

    9 To sustain a system reboot, start the snmpd service.

    Chkconfig snmpd on

    10 Run the following command to send a test trap to IT Assistant:

    vicfg-snmp --server <ESX_IP_addr> --username root --password <password> -T

    NOTE: Ensure that the SNMP ports are open before sending traps to the management station by typing

    esxcfg-firewall -e snmpd