Hi everyone,
You can find a TLDR; at the end of this post 🙂
I post here in English so that I can reach both french speaking and german speaking people (and I wanted to ask this question to @Tux0ne too, but my German is weak).
My goal is to change the Swisscom Box with another device (more likely multiple devices) so that I keep the same functionalities but with a far better router (w/ new technologies, more options, more control, ...) and better wifi range and speeds. Also it can be a little bit more safer (at least I think so) because now Swisscom can really come and do what they want with our "private" home connection by having partial/full control over the router. I have a VDSL connection (not fiber).
At first, I naively wanted to buy the Netgear D7800 and simply swap the Swisscom Box. Then I simply connected everything back and moved the phone from the swisscom box to the old splitters .
Because I was told the D7800 would not be taken back at the store, I first called Swisscom for help and of course they absolutely didn't know or understand what I wanted, but after insisting, one of my speaker's colleague told him they couldn't help me with settings of another modem+router. And of course, they can't garantuee it will work.
So I had to find everything by my own. I was helped by my friend @Soldier9945 and that's what I know for now :
My connection is now ALL IP due to Swisscom TV 2.0 (that's what I found at least) so I can't use old splitter like before to get the phone fixed network to work without the new Swisscom Box. So if I can have a third party router to work, I still have to find a way to connect my phone somehow because most modem+routers combo don't deal with phones.
In order for the internet to work, the modem (if not bridging) or the router (if the modem is bridging) must have the DHCP option 60 to send a vendor ID, otherwise you don't get a valid public IP and you don't have internet. Sadly, most third party routers or modem+routers I found don't have that. There is a way with some ASUS routers because you can't install Merlin firmware and "hack" the DHCP 60. But you are stuck if you wan't a netgear or another brand... I have been able to test that with a Zyxel 870HN and it works in non-bridge mode with the DHCP option 60 activated with the right vendor ID. If bridging the 870HN, this task goes to the router and that's a problem.
The goal is to keep the Swisscom TV working, so you need IGMP multicast enabled and that's ok at least with most routers, but I don't know if something else is required to have it work properly (VLANIDs?).
In modern modem+routers, you have some options for VDSL2 with VLANID and priorities for Internet and IPTV and I don't know if you need that to be actived and configured. If so, you must know these parameters (you can find an example with the manual of the D7800, page 61 or another example here).
Well, the least I can say is that if you don't want the new Swisscom Box, you are screwed. Of course, you can add tons of devices and hack stuff, but there is no single elegant and (more or less) simple solution.
I know that with a modem in bridge mode (centro piccolo w/ old firmware or Zyxel 870HN) and a ASUS router sporting a Merlin firmware w/ DHCP option 60, you can achieve a working internet connection. The problem is 1) that it doesn't solve the phone fixed network problem 2) don't know if Swisscom TV works and 3) I would prefer a single modem+router combo.
Sadly, I'm no networking pro (even if I know well computer sciences) so it's not that easy to solve. When you think about it, the initial statement seems so simple : changing the Swisscom Box by something else (that is better).
Maybe noone has a simple (or even a complex) answer, but if we can turn this post in a collaborative talk about how to solve this problem elegantly and why not simply (so that anyone can enjoy it even without advanced technical knownledge), maybe it could help a lot of people that in the future want to use their existing router or have too many problems with the Swisscom Box, ...
TLDR : I want to change the Swisscom Box so that I have a modem+router with better wifi, new technologies (like MU-MIMO), more options, more control, the Swisscom TV still working and a fixed network phone that keeps working knowing that now it is IP fixed network (so you can't use the old splitters anymore...). I don't want to simply add a new router because I don't want to deal with double NAT. If you don't have an answer, maybe we can find a solution by turning this post into a collaborative talk between people knowing that kind of stuff.
Thanks !
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