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Force LAN to get the same subnet whatever the WAN subnet is using ER605 v2 Router

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Force LAN to get the same subnet whatever the WAN subnet is using ER605 v2 Router

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
Force LAN to get the same subnet whatever the WAN subnet is using ER605 v2 Router
Force LAN to get the same subnet whatever the WAN subnet is using ER605 v2 Router
2022-10-13 07:21:41
Tags: #VLAN & Multi-Networks #DHCP Service #subnet
Model: ER605 (TL-R605)  
Hardware Version:
Firmware Version:

Hello, I choose ER605 as the main router between the ISP box and the clients, and in order to keep the IP configuration of the client devices, I must assign the same address 192.168.1.X to the LAN as WAN. However, the router does not accept this configuration and changes the range. How to do?

Is some configuration as illustrated in the below picture possible and how?

Thank you in advance. 

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3 Reply
Re:Force LAN to get the same subnet whatever the WAN subnet is using ER605 v2 Router
2022-10-13 08:12:33

  @Elmar25 

 

No i dont believe you can do this as you cannot disable NAT on these routers to effectively "disconnect" any lans from any wan

What you could do, its double nat, get another router in between you ISP modem and your ER605 and have it set to a LAN with something like 253.253.253.1 which is highly unlikely your ISP will ever give you, you can then put that into ER605 WAN port and set a lan of 192.168.1.x as you need

 

This will double NAT though and there are some potential issues with that (UPNP wont work, will need to port forward any needed ports through both routers etc)

Owner of: ER605 v1, ER605 v2, ER7206 v1, SG1024DE v4.2 and AX53 v1
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#2
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Re:Force LAN to get the same subnet whatever the WAN subnet is using ER605 v2 Router
2022-10-13 08:31:56

  @GRL I highly appreciate your reply. I thought that, as it is a professional router, it must be possible by realizing multiple virtual wans and lans. Thanks.

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#3
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Re:Force LAN to get the same subnet whatever the WAN subnet is using ER605 v2 Router
2022-10-13 08:45:18

  @Elmar25 

 

It might be possible with Policy and Static routing, but i wouldnt hold you breath.  Remember, this is a pro-sumer / SOHO router thats $50, it cant do everything.

 

I dont think you can even easily do this with high end Draytek stuff and thats not even really "enterprise" grade gear

Owner of: ER605 v1, ER605 v2, ER7206 v1, SG1024DE v4.2 and AX53 v1
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Information

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Views: 518

Replies: 3

Tags

VLAN & Multi-Networks DHCP Service
subnet
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