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IanSully's avatar
IanSully
Follower
Jan 27, 2021

Nighthawk R7000P saying "Invalid Subnet Mask" when trying to add static route.

Hello all! I got a Nighthawk R7000P not too long ago and I cannot add a static route, because the router says "invalid subnet mask" even know I am pretty sure that subnet mask is valid. I am not sure if that is a firmware bug or something. If it is not, then I might need some assistance on this. The information will be below. I will not be disclosing my actual IP Address because of privacy reasons but I will be giving an example of what I want.

 

Private: No

Active: Yes

 

Destnation IP Address: 192.168.2.0

IP Subnet Mask: 255.255.255.0

Gateway IP Address: 192.168.1.190

Metric: 2

 

Firmware Version: 1.3.2.134_10.1.66

 

The reason why I want to set a static route, is because I want to route traffic over to a Cisco 2921 Router because behind that router I have a another network that let's just say that it is 192.168.2.0/24, I want to route traffic to that network, so both networks can communicate to each other. I am not sure why my router is doing this. If someone can help me out. Please let me know.

 

Best regards, Ian

Firmware
Troubleshooting

1 Reply

  • antinode's avatar
    antinode
    Guru
    Jan 27, 2021

    > [...] I will not be disclosing my actual IP Address because of privacy
    > reasons but I will be giving an example of what I want.

     

       Your example looks fine to me, but that might mean very little if
    what you're actually doing is different from your exhibit.

     

       "255.255.255.0" would normally be a swell subnet mask, and the error
    message could be misleading.  Or the fictional garbage which you're
    posting could be misleading.  With my weak psychic powers, it's tough to
    say.

     

    > [...] let's just say [...]

     

       I have a better idea.  Let's just say what you're actually doing, and
    stop wasting everyone's time.  If these addresses are all private, then
    there's no reason to hide any of them.  If they're not all private, then
    you might need to explain in more detail exactly what you're doing.


       Also interesting would be some information on which of these routers
    is connected to your ISP (and how), and how they're connected to each
    other, and how they're configured.