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jd653687
jd653687
Visitor III
April 20, 2021
Question

PPPOE with routed subnet

  • April 20, 2021
  • 2 replies
  • 10249 views

I have a PPPOE connection with routed subnet but only get the gateway adres 

subnet is 255.255.255.248 but the IP adres from the ISP I see 255.255.255.255

Is it possible to configure the ip-range manually in PPPOE? 

Example of the ip-addresses I get from the ISP is:

Netwerk adres:192.0.2.8

Router IP-adres:192.0.2.9

Broadcast adres:192.0.2.15

Subnetmasker:255.255.255.248

And when I configure PPPOE i only see 192.0.2.9 mask 255.255.255.255 and the gateway adres of the profider

How do I use the 192.0.2.10-14 addresses?

 

    2 replies

    sw2090
    SuperUser
    sw2090
    SuperUser
    April 21, 2021

    pppoe on a fortinet does not support manual ip configuration afaik.

    Are you sure you have to do pppoe?

    That sounds like static ip setup. Probably it does not requrie pppoe at all?

    That's what I have here. I have one line that has a /29 subnet from isp and that has it's own router connected to it which establishes the connection to isp over fiber and I can connect my fgt to a lan port of this and have the /29 I got from ISP on that wan of my FGT.

    jd653687
    jd653687Author
    Visitor III
    April 21, 2021

    This is a Crossnetwork config and we need a PPPOE connection. Put a Cisco with Dialer between the ISP and the FG and it is working now. Pitty you cannot configure routed ip with FG.

    marchand
    marchand
    New Member
    April 21, 2021

    I guess that in fact your provider gives you a fixed ip through the pppoe session and the assigned subnet is routed through the directly connected ip . You can do this with fortigate

    marchand
    marchand
    New Member
    April 22, 2021

    For this I think it is enough to create a VIP for the ip you want to use from the subnet. Have you tried that?

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