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 DHCP addresses at limit.

   

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