Yes, that is more or less what I was having in mind as I read your (and others) several advices.
Putting all in one main router (the most powerfull one) would be easier to maintain.
But I can see two disadvantages:
- It puts all the load in one router. Being my routers not all that advanced (a FritzBox 4040 and for now a TL WR1043ND, altough I will probably buy another one) separating dhcp and dns would balance load.
- Having two DNS servers for two domains (.home and .iot) is not supported by default in openWRT. You have to twak it and there is no LUCI support for it, as long as I know. So it would difficult the tasks of maintaining it, having to use config files and commands (something I would like to avoid, as I would forget all about it after 3 months of not touching anything in the router).
I will try to prototype that solution with two old routers from ISPs and the tplink as switch.
For now I will not be able to eliminate the ISP router completly.
I could buy ONT and connect it to the fiber ans bridge all data to the main router through wan ethernet port.
But that comes with two problems:
-
The support from the ISP would be null from that moment. Each time there is a problem, they would say that they can do nothing as the router is not its router.
-
The ISP router provides TV signal and PHONE (voIP) using two VLANS that get separated at the router, directing TV to one of the ports (where the decoder should be connected) and directing the voIP to an internal analog phone port. I don't mind TV as I don't suscribe to ISP channels, and in the case I wanted to do it, with the managed switch it should be easy to direct the VLAN traffic to any port at the home routers to install the decoder there.
But I need the phone signal, and at the moment I am not prepare to fight with a phone centralite configuration. It would be great to have it, and be able to answer phone from other devices or when you are away from home, but it is complex and at the moment I cannot take that path. -
The router lets you put it in bridge mode, but partially, directed only the internet VLAN traffic to the WAN port in the main router. That is what I will try to do. Other solution is using DMZ and static routes to solve double NAT problems, if the bridge mode does not work as expected.
@dlakelan and @slh thanks both for your suggestions.
The zyxel in USA may be 35$ but here in amazon spain or germany, it is about 105, here: Zyxel Conmutador Gigabit de 8 Puertos | Smart Managed | Montaje en Pared y sin Ventilador | VLAN, IGMP, QoS | Garantía de por Vida [GS1900-8] : Amazon.es: Informática
There is this other zyxel Zyxel Gigabit Switch de 5 puertos - web configurable [GS1200-5] : Zyxel: Amazon.es: Informática
It says that it has VLAN and IGMP, but do not know more about it.
Even not being openWRT compatible, if you can configure the vlans it would do the task, not need of too much other config or installing other modules.
I would prefer using openWRT if possible, in order to use just one interface and being confident of whoe openWRT works.
tplink has this other TP-Link TL-SG105E Unmanaged PRO Switch, 5 Puertos Gigabit Inteligente, Plug and Play, Gigabit Puerto, Caso Metal VLAN, QoS, Software de Gestión Inteligente Fácil, Negro : Amazon.es: Informática that supports igmp, and vlans, says it is managed.
And netgear NETGEAR Switch Ethernet de 8 puertos GS308E, Switch Gigabit Smart Plus, hub Ethernet metálico de sobremesa, negro : Netgear: Amazon.es: Informática
This one says that has smart managed (not sure if that makes it a managed switch) and VLANs and QoS. Does not mentions IGMP (not suere if I need IGMP, I don't have TV from the ISP, but the nas provides streaming of video).
This one is not in the compatibility list, but GS108T is. Don't know if it can work whit the same firmware.
I could not find the GS108T.
There is this other two, whic seems to be similar: GS108E with a 8 or 5 ports model. Has the advantage of having 2 Gb ethernet.
Netgear GS108E-300PES - Switch conmutador de red gestionable de 8 puertos Gigabit RJ-45 (2000 Mbps de ancho de banda, con control de red, QoS y VLAN, carcasa metálica) : Netgear: Amazon.es: Informática
They have basic VLANs and QoS, but not completly managed (and , it seems that that is the inteligent for a full VLAN managment with voice traffic, I don't know what is exactly the difference).