TP-Link: Possible modem trouble?

the tp link is your router but what is your modem or your first device where the internet (cable ? ) comes into your house ?

Do you have a way to access to this tp link repeater?
Exists the possibility that you need to open the Ethernet ports there

If your ISP gave you this tp link device please reach them in order to find what’s going on

forums.xbox.com/.../2049894.aspx

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portforward.com/.../Xbox_Live_360.htm

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Just a couple more links I found.

Thank you! This is valuable information.

[quote user="Ankau"]I got my friend to fill out his information too

Modem brand & model number: tp-link TD - 8840t

Router brand & model number: Linksys wrt1900ac[/quote]Can you ask your friend if their TP-Link TD-8840T is operating in bridge mode.

The TP-Link TD8840T is a combined xDSL modem with router/NAT built-in. So far so good, but since your friend also have an additional router/NAT (Linksys wrt1900ac) which terminates into an existing router/NAT (TP-Link TD-8840T), inbound/outbound traffic will
be NAT'd twice. Multiple levels of NAT in a home environment should be avoided.

Keep us posted!

My advice would be if you need to do multiplayer that you send the router back. It does not work with XBOX.

I have tried UPNP, DMZ, and manually forwarding all the ports. Nothing works.

I did manage to get the DMZ to work for a few days and then it stopped.

To be fair to TP-LINK I don't think the problem is theirs I think it is the XBOX as the DMZ and port forwarding works with other servers and other services. By all means contact the TP-LINK support they are very helpful, and perhaps they can get Microsoft
to help