RT-AC87U - Misconfiguration ?

[Laurent Taieb]

Hi, I have my ASUS RT-AC87U underneath my broadband router.
I have de-activated the DHCP server from the broadband router and set fixed lan address on the broadband router (192.168.1.1) and a fixed wan one on the RT-AC87U (1.92.168.1.2).
The RT-AC87U keeps the DHCP server functionality.
2 issues:
- I'm getting an error message on the router that the WAN address doesn't match the external one.
- I can ping the smtp address of my ISP but I can't send emails or connect it using telnet.

Any views ?

 

[Laurent Taieb]

some more info.
My ISP smtp server doesn't respond when I connect it via telnet (whatever port) from the router.
When I connect my laptop to the ISP modem router, my ISP smtp server responds..
Has anyone some idea ?

 

[Zirescu]

Do you have a transparent mode on your broadband router if so I'd use it. What do you have configured for your gateway?

 

[Laurent Taieb]

I have not a Transparent Mode parameter on the RT-67. Does it exist ?
My Gateway is actually the LAN port of my ISP router.

 

[Zirescu]

The transparent mode might be an option on your ISP's modem or something they might be able to enable from their side.

 

[Laurent Taieb]

Apparently, the only thing I can do is to set up their box as a Bridge or as a Router.
Right now, it's set up as a Router.
It's pretty weird as the whole stuff works when my PC connects a VPN..

 

[drabisan]

Then configure the ISP equipment as bridge and let Asus to be the only router in your network.
After you bridge it, Asus should get a public ip address on its WAN interface.
Now you're doing double NAT, once on Asus and once on ISP router, and this is a really annoying setup and complex to troubleshoot.

 

[mrex]

- I'm getting an error message on the router that the WAN address doesn't match the external one.

after the latest firmware, i get this same error message. i didnt change anyhing and everything is working fine. dont know why im getting this error message.



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