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The following commands can be useful for displaying the IP address received from DHCP on a FortiGate interface from the CLI.
In this example, FortiGate port1 mode is set to DHCP.
The command fnsysctl ifconfig can be used to display the inet addr, which is the IP address received by the interface from DHCP in that case.
Syntax: fnsysctl ifconfig <interface name>.
Alternatively, the command 'get' can also be used to display the IP address of the interface under 'config system interface'.
Syntax: get <interface name>.
By using these two commands, it is possible to successfully learn the IP address received from DHCP.
This method is especially useful in a situation where the GUI is inaccessible.
The following commands can also be used to fetch the dynamic IP assigned to the interface:
get system interface physical <interface name>
Number the output lines using -n for easier reference.
diagnose ip address list | grep -n port1
Example:
show system interface port1
config system interface
edit "port1"
set vdom "root"
set mode dhcp
set allowaccess ping https ssh http
set type physical
set snmp-index 1
next
end
get system interface physical port1
== [onboard]
==[port1]
mode: dhcp
ip: 192.168.181.136 255.255.255.0
ipv6: ::/0
status: up
speed: 10000Mbps (Duplex: full)
FEC: none
FEC_cap: none
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