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Administration Guide

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SNMP traps and query for monitoring DHCP pool

The SNMP DHCP event contains three traps and one query.

Traps are sent when:

  • DHCP server IP pool usage reaches 90%
  • DHCP server detect an IP address that is already in use
  • DHCP client receives DHCP NAK

SNMP queries are accepted for DHCP lease usage information (OID = 1.3.6.1.4.1.12356.101.23). The query result is based on the leased out percentage.

To enable the SNMP DHCP event in the GUI:
  1. Go to System > SNMP.
  2. Click Create New in either the SNMP v1/v2c table or SNMP v3 table, or edit an existing community or user.
  3. Configure the settings as required.
  4. In the SNMP Events list, enable snmp-event::dhcp.

  5. Click OK.
To enable the SNMP DHCP event in the CLI:
config system snmp community
    edit 1
        set name "REGR-SYS"
        config hosts
            edit 1
                set ip 10.1.100.11 255.255.255.255
            next
            edit 2
                set ip 172.16.200.55 255.255.255.255
            next
        end
        set events dhcp
    next
end
config system snmp user
    edit "1"
        set notify-hosts 172.10.1.0 172.20.1.0
        set events dhcp
        set security-level auth-priv
        set auth-proto sha384
        set auth-pwd ********************
        set priv-proto aes256
        set priv-pwd *********************
    next
end

SNMP traps and query for monitoring DHCP pool

The SNMP DHCP event contains three traps and one query.

Traps are sent when:

  • DHCP server IP pool usage reaches 90%
  • DHCP server detect an IP address that is already in use
  • DHCP client receives DHCP NAK

SNMP queries are accepted for DHCP lease usage information (OID = 1.3.6.1.4.1.12356.101.23). The query result is based on the leased out percentage.

To enable the SNMP DHCP event in the GUI:
  1. Go to System > SNMP.
  2. Click Create New in either the SNMP v1/v2c table or SNMP v3 table, or edit an existing community or user.
  3. Configure the settings as required.
  4. In the SNMP Events list, enable snmp-event::dhcp.

  5. Click OK.
To enable the SNMP DHCP event in the CLI:
config system snmp community
    edit 1
        set name "REGR-SYS"
        config hosts
            edit 1
                set ip 10.1.100.11 255.255.255.255
            next
            edit 2
                set ip 172.16.200.55 255.255.255.255
            next
        end
        set events dhcp
    next
end
config system snmp user
    edit "1"
        set notify-hosts 172.10.1.0 172.20.1.0
        set events dhcp
        set security-level auth-priv
        set auth-proto sha384
        set auth-pwd ********************
        set priv-proto aes256
        set priv-pwd *********************
    next
end