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Umesh
New Contributor II

why do we assign secondary IP address

Hi All,

 

I am little bit confused, why do we have to assign secondary IP address on the interface and what is the use of secondary IP address.

 

Regards,

Umesh

2 REPLIES 2
sagha
Staff
Staff

Hi Umesh

 

If you would like to have multiple IP address on the interface, you can make use of secondary IP addresses. This helps in configuring multiple subnets on the same interface. 

 

https://docs.fortinet.com/document/fortigate/6.0.0/handbook/915482/secondary-ip-addresses-to-an-inte...

 

Thank you. 

Shahan

Yurisk
Valued Contributor

Usually it is a temporary state, when for example switching topology , say from LAN 10.10.10.0/24 to 192.168.15.0/24 and you want to minimize downtime. Configuring new network on the FGT interface to LAN you can switch lans and both networks will work without changing something in the fortigate. 

Yuri
https://yurisk.info/ blog: All things Fortinet, no ads.


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