Technical Note: Watchdog Timeout / Application Crash snmpd (signal 6) abort

[dkoprusak]

Description

When implementing SNMP monitoring and after starting SNMP queries FortiGates snmp daemon starts crashing due to the signal 6 (Abort).

Solution

This issue may be caused by duplicate snmp-index on multiple interfaces.  To check the index number of the interfaces:

show system interface

Example of the output:

config system interface
    edit "mgmt"
        set vdom "root"
        set ip 172.30.30.99 255.255.255.0
        set allowaccess ping https ssh snmp http fgfm
        set type physical
        set dedicated-to management
        set role lan
        set snmp-index 1
    next
    edit "ha"
        set vdom "root"
        set type physical
        set snmp-index 2
    next
    edit "wan1"
        set vdom "root"
        set mode dhcp
        set allowaccess ping
        set type physical
        set role wan
        set snmp-index 2
    next

To resolve this issue change the snmp-index:

config system interface
edit <interface name>
set snmp-index AAA      -----{ where AAA is a not used index number
next
end