Archer BE550 problem with autonegotiation / autosensing to Deutsche Telekom MagentaTV One
background and network structure
My ISP is Vodafone with a cable connection (EuroDocsis3.1) and my Vodafone Station is the router that dials up the Internet. Behind the Vodafone Station I have connected the main router from TP-Link via LAN-WAN. This router administers my network and only receives an IP address from the Vodafone Station via DHCP on his WAN port. Up until now I had the Archer C9 v1.0 as main router from TP-Link, which has now been replaced 1:1 by the Archer BE550 v1.0.
problem
The Archer BE550 works great so far. But unfortunately there is a problem with my streaming box "MagentaTV One" (1st generation) from Deutsche Telekom. The MagentaTV One is connected to the Archer BE550 via an Ethernet cable (Cat6) and also gets the IP address from the Archer BE550 via DHCP. The MagentaTV One, which is without power overnight, does not receive network access to the Archer BE550 and remains offline when I start it. I didn't have the issue with my old Archer C9 where the MagentaTV One always worked without any problems.
In the Archer BE550, the MagentaTV One is neither listed in the DHCP list of connected clients, nor is the Ethernet port to which the MagentaTV One is connected shown as connected in the Archer BE550 web interface. If I unplug the Ethernet cable from the MagentaTV One or the Archer BE550 and plug it back in again, nothing changes. In order to solve the problem by the next day, I either have to restart the Archer BE550 when the MagentaTV One is on or plug the Ethernet cable to the MagentaTV One into another unused Ethernet port on the Archer BE550.
If I connect my old Archer C9 as a switch, with DHCP deactivated and with an IP address in the Archer BE500 subnet, then there are no problems and the MagentaTV One is always online immediately and fully functional and visible in DHCP client list from the Archer BE550. But I will not have an unnecessary second device, like Archer C9 for this test, between the Archer BE550 and the MagentaTV One.
I have also already tested different Ethernet cables (Cat6) with different lengths and also a crossover cable, but the problem remains the same. A static IP address on the MagentaTV One is also not a solution, as the port on the Archer BE550 continues to show as not connecting, until I switch the Ethernet port on Archer BE550 or reboot the the Archer BE550 if the MagentaTV One is on and connected to the router.
I am currently using the IPTV function of the Archer BE550 as a workaround and have set the Ethernet port to which the MagentaTV One is connected to bridge mode. The other 3 Ethernet ports are still set to Internet. This way, the MagentaTV One have in short time a link to Archer BE550, gets an IP address from the Vodafone Station and works without restrictions and immediately after starting.
However, with the IP-TV bridge mode, the MagentaTV One is logically no longer visible in my Archer BE550 network because it is in the Vodafone Station network. But don't really want that, because the Archer BE550 is my main router and manages my network, just like the Archer C9 did before it.
There are no problems with the Magenta TV One via WLAN. However, since I switch WLAN on and off on the Archer BE550 at certain times, the MagentaTV One should be connected to the Archer BE550 via an Ethernet cable, as was previously the case with the Archer C9.
I think that it is an issue or can be a strange bug with the auto-negotiation between the Archer BE550 2.5 Gigabit Ethernet ports and the MagentaTV One which one have only 100 Megabit Ethernet ports. As I said, with the Archer C9, which only has 1 Gigabit Ethernet port, there were never any problems and there are none when I use it as a switch between the Archer BE550 and the MagentaTV One. All other clients connected via Ethernet cable have no problems. It only affects the MagentaTV One.
The MagentaTV One use with last update Android TV 12 as operating system. And based on the MAC address (first three parts of it are "04-AB-08") of the Ethernet port, it appears that the MagentaTV One was manufactured by "Shenzhen Skyworth Digital Technology CO".
Specs from the MagentaTV One
Unfortunately, I cannot deactivate the auto-negotiation on MagentaTV One and on the Ethernet ports on the LAN side of the Archer BE550 and set a fixed speed, e.g.100Mbit full-duplex or 1000Mbit full-duplex.
I hope someone can give me a tip or that TP-Link can solve the problem.
best regards
GrenSo
update 3
Today I installed an unmanaged gigabit switch (model EW-A005-E) between the Archer BE550 and the MagentaTV One and deactivated IPTV on the Archer BE550 and switched all Ethernet ports back to the Internet.
The switch established a Gigabit link to the Archer BE550 and the MagentaTV One established a 100 Megabit link with the switch. In this setup, the MagentaTV One received a link to the network immediately and without delay, obtained an IP address from the Archer BE550 via DHCP and was immediately online.
So exactly the same as if I put the Archer C9 as a switch between the MagentaTV One and the Archer BE550.
This confirms my suspicion that there is an issue with the auto-negotiation between the Archer BE550 and the MagentaTV One. The only question is how to solve it so that I don't need an additional switch between the Archer BE550 and the MagentaTV One.
update 4
Today or better this morning I deactivate IPTV completely and the MagentaTV One immediately gets a link and is online.
I still have the same setup as described in Update 3. That means I have the unmanaged switch mentioned above between the Archer BE550 and the MagentaTV One and everything works fine.