Need some Help in router submask configuration
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Hi everyone,
i Need some Help in router submask configuration please.
i have one Dual WAN router to increase internet speed and tow ADSL modems plugged into the Dual router.
When I login into the Dual router to see the activity log if there any issues and I found there is one problem saying submask of WAN1 and WAN2 are in the same range 255.255.255.0
WAN2: IP address is 192.168.0.61, MASK is 255.255.255.0. It's in the same subnet with WAN1(192.168.0.51/255.255.255.0)
The question is what submask do I have to put in ADSL1 and ADSL2 and in the Dual router
Right now is set like this
ADSL1
192.168.0.50
255.255.255.0ADSL2
192.168.0.60
255.255.255.0The Dual router
192.168.254.1
255.255.255.0 -
Did your ISP provide you with your subnet mask? I can make a guess on what it could be, but it may not be right.
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@Kelly no ISP did not provided me with a submask its a TP-Link Adsl modem normal Adsl router
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@inroute said in Need some Help in router submask configuration:
@Kelly no ISP did not provided me with a submask its a TP-Link Adsl modem normal Adsl router
I'm confused. Are the two WAN links addressed behind the ADSL modems, and the modems have public IP addresses? If that is the case, then you will need to re address the ADSL modems. If not, then you will need to know what your ISP is designating as your default gateway on each WAN connection.
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@Kelly ISP provider has nothing to do with that..... the problem is in the 255.255.255.0
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@Kelly from ADSL modem to the Dual router using network cable cat5
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@inroute said in Need some Help in router submask configuration:
@Kelly ISP provider has nothing to do with that..... the problem is in the 255.255.255.0
I understand where the problem lies. The answer is not so simple. I can give you suggestions, but if the correct default gateway is not in the same subnet as your device IP then you will not be able to communicate even if the error you listed above is resolved.
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@Kelly i think you did not got me
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@inroute said in Need some Help in router submask configuration:
When I login into the Dual router to see the activity log if there any issues and I found there is one problem saying submask of WAN1 and WAN2 are in the same range 255.255.255.0
WAN2: IP address is 192.168.0.61, MASK is 255.255.255.0. It's in the same subnet with WAN1(192.168.0.51/255.255.255.0)
The question is what submask do I have to put in ADSL1 and ADSL2 and in the Dual router
The mask is the mask, you can never change it. It is what it is. And masks cannot overlap, that's conceptually not possible or meaningful. The statement that the masks overlap is just wrong, there is no other way to put it. Maybe it is a bug that they put in a bad error message or maybe it was copied down wrong, but that isn't the problem, it cannot be... it means nothing. Masks don't have ranges at all.
The issue is very obviously that you have two WAN connections on the same network. That can't be. So you need to fix that. You can't fix that by just altering your configuration. You need to actually change at least one of them, potentially by adding another router.
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If you are going to be putting a router behind your DSL modems, you need to pass through the IP address from the ISP to your router. That is how normal people do it.
As it is setup now, you have double NAT happening.
If you choose not to change your setup as I said, then you need to at least change one of the DSL modems to have a LAN network other than 192.168.0.0/24
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@JaredBusch said in Need some Help in router submask configuration:
If you are going to be putting a router behind your DSL modems, you need to pass through the IP address from the ISP to your router. That is how normal people do it.
As it is setup now, you have double NAT happening.
If you choose not to change your setup as I said, then you need to at least change one of the DSL modems to have a LAN network other than 192.168.0.0/24
Good call JB - I forgot to come back and post basically the same thing.
As JB mentioned, if possible, you want to disable the NATing on the DSL modems and have the real IP come to your firewall/router appliance.
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Thank you all for your help
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@inroute said in Need some Help in router submask configuration:
Thank you all for your help
Did you get it all working?
