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snakekick
snakekick
New Member
April 12, 2018
Question

subnet-overlapping / more than one interface in the same subnet

  • April 12, 2018
  • 1 reply
  • 14894 views

Hello,

it is possible with a fortigate fw to config more than one port in the same subnet ?

i need more than one ip and more then gig ethernet to connect with other network but i don´t have access to the other switch so that i can´t use lacp

 

thanks.

 

 

    1 reply

    ede_pfau
    SuperUser
    ede_pfau
    SuperUser
    April 12, 2018

    No, you can't. Mainly because only LACP allows vendor-agnostic trunking.

    What you can do is run 2 separate VLANs from 2 ports across...but again, you need access to the switch for this.

    emnoc
    emnoc
    New Member
    April 12, 2018

    You think you  to overlap subnet and interfaces than your  design and topology is wrong. And no you can't overlap a L3 subnet across multiple interfaces in a single vdom.

     

    Ken

     

    neonbit
    neonbit
    New Member
    April 13, 2018

    'technically' you can enable this feature on the FortiGate:

     

    config system settings

    set allow-subnet-overlap enable

    end

     

    This will allow you to configure IP's on different interfaces to be on the same subnet.

    But like the guys said, if you ever need to do this then you should be redesigning your network.

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