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ThatDudeFromNZ
New Contributor

Manual WAN: Invalid IP Netmask

New ISP has given allocation to client for example:  73.23.46.100/30 with Gateway of 73.23.46.101

 

Set WAN interface in Manual mode and it's prompting Invalid IP Netmask as below. 255.255.255.252 same error

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73.23.46.99/30  and 73.23.46.101/30  work fine but if I try 73.23.46.100/30 or even 73.23.46.200/30 I'll get an error, any idea why? bug? Tested on another different client FortiGate/upgraded firmware and same issue.

 

I've also set the subnet in a broader scope as a workaround, one which includes gateway in its range but I couldn't ping anything outbound from the interface so assume I need correct subnet for this to work. Setup static route to point interface to the correct gateway.

 

Is this some bug stopping from inputting addresses that end in .100 and .200 on /30 subnets or am I doing something wrong? usually deal with DHCP or PPPoE connections.

1 REPLY 1
jorge_americo
Contributor

This IP is NETWORK, in this case you must use 101 and 102.

 

Network: 73.23.46.100/30 Broadcast: 73.23.46.103 HostMin: 73.23.46.101 HostMax: 73.23.46.102

NSE-4

NSE-4
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