Special network configuration in a datacenter.



  • Hello, I have a little problem for configuring network in pfSense 2.0.
    The server is in a DC and network configuration is very strict (the switch will shutdown the port if the configuration is not respected).

    My IP is 88.190.245.X/32 but the gateway is in a different network : 88.190.12.1.

    In linux I use :```
    allow-hotplug eth0
    iface eth0 inet static
            address 88.190.245.X
            netmask 255.255.255.255
            up route add -host 88.190.12.1 dev eth0
            up route add default gw 88.190.12.1

    
    But, how to do the same in pfsense?
    
    Thanks for your help !


  • That network configuration is invalid.  You cannot assign your WAN a /32 address and expect to be able to route.  At the very minimum, you would need a /30.  You need to clarify the configuration requirements with your datacenter.



  • This configuration is valid and is the only one accepted by the DC.

    I have 2 debian and 1 windows 2008 running with this configuration.
    I was using "zeroshell" which work fine too.

    That why I need a way to force that. ::)



  • I installed "shellcmd" which force adding routes to the gateway.
    And now it works fine…


  • Rebel Alliance Developer Netgate

    It may work but I wouldn't call that "valid" in any sense of the word. Sounds like a DC is just trying to cheap out on allocating IPs properly.



  • I remember getting strange configs like that from Verizon 6 or 7 years ago on their PPPoE DSL.  The settings the DSL modem received didn't make any sense…


  • Rebel Alliance Developer Netgate

    That's different, it's a point-to-point link. PPPoE (and PPTP, PPP, etc) gets a subnet mask of /32 and a gateway (that is somewhat meaningless), but for links that are not point-to-point, you need at least a /30 so each end gets an IP.



  • Interesting, I just learned something.  Thanks.



  • @jimp:

    It may work but I wouldn't call that "valid" in any sense of the word. Sounds like a DC is just trying to cheap out on allocating IPs properly.

    The host (esxi for me) has a classic network configuration in /24.

    But if we need more IP for virtuals machines, our DC ("OVH" or "Online" in France) give us a /32 (called "ipfailover") and the gateway must be the same as host.
    Even if we want a range of addresses, they give us a /30 /29… but the gateway are external.


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