2 distinct networks on the same Ethernet cable.
Jeepy
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brupala Posted messages 111766 Registration date Status Membre Last intervention -
brupala Posted messages 111766 Registration date Status Membre Last intervention -
Hello,
Living in a large house with existing and functional ethernet wiring, I want to coexist a second network (Freebox Delta, smart home devices, and Devialet player, possibly Free repeaters) on the same ethernet cable.
My existing network is managed by a Google Wifi router, which distributes everything well, via Wi-Fi or ethernet. It has a typical architecture of 192.168.86.XX, with a subnet mask of 255.255.255.0.
I do not want any exchanges between the existing "Google Wifi" network and the new network created by my Freebox.
Is it enough to change the subnet mask of the Freebox (and the devices intended for it) to create, manage, and administer this new network in parallel? Will there not be any interference or interaction between my two networks?
Thank you for your opinions and help to better understand how to solve this problem.
Living in a large house with existing and functional ethernet wiring, I want to coexist a second network (Freebox Delta, smart home devices, and Devialet player, possibly Free repeaters) on the same ethernet cable.
My existing network is managed by a Google Wifi router, which distributes everything well, via Wi-Fi or ethernet. It has a typical architecture of 192.168.86.XX, with a subnet mask of 255.255.255.0.
I do not want any exchanges between the existing "Google Wifi" network and the new network created by my Freebox.
Is it enough to change the subnet mask of the Freebox (and the devices intended for it) to create, manage, and administer this new network in parallel? Will there not be any interference or interaction between my two networks?
Thank you for your opinions and help to better understand how to solve this problem.
4 réponses
Hello
You can have multiple networks coexist as long as they do not have the same network address.
If the current one is 192.168.86.X / 255.255.255.0, the other could be 192.168.0.X / 255.255.255.0
The 0 is just an example; any value other than 86 would work.
No need to touch the cabling.
However, be careful with DHCP.
There should only be one on the network.
Devices on the second network will need to have static IP addresses.
--
There are 3 types of people: those who know how to count and those who do not.
There are two categories of people: those who divide everything into two categories and the others.
You can have multiple networks coexist as long as they do not have the same network address.
If the current one is 192.168.86.X / 255.255.255.0, the other could be 192.168.0.X / 255.255.255.0
The 0 is just an example; any value other than 86 would work.
No need to touch the cabling.
However, be careful with DHCP.
There should only be one on the network.
Devices on the second network will need to have static IP addresses.
--
There are 3 types of people: those who know how to count and those who do not.
There are two categories of people: those who divide everything into two categories and the others.
Hi,
yes, as Phil2k said, it is indeed possible to have multiple IP networks coexisting on the same Ethernet network; the broadcasts and multicasts, which are outside the IP network (except for directed broadcasts like those on the Windows network), will be visible to both networks, but that’s not a big deal.
ARP, MDNS, and DLNA will end up together, but that doesn’t affect the rest.
Indeed, DHCP will cause issues, it's better for machines to have fixed IP addresses and a fixed default gateway.
--
and ... There you go!
yes, as Phil2k said, it is indeed possible to have multiple IP networks coexisting on the same Ethernet network; the broadcasts and multicasts, which are outside the IP network (except for directed broadcasts like those on the Windows network), will be visible to both networks, but that’s not a big deal.
ARP, MDNS, and DLNA will end up together, but that doesn’t affect the rest.
Indeed, DHCP will cause issues, it's better for machines to have fixed IP addresses and a fixed default gateway.
--
and ... There you go!
jeannets
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Hello,
If you run two Ethernet connections on the same cable, you will have to switch to 10/100 Mb/s and will no longer be able to operate in gigabit (1000 Mb/s) because you will need to use two conductors of the cable...
Let's say for home automation, that's enough, but depending on your computing and usage, it might not be suitable...
https://www.touslescables.com/doubleur-rj45-A6AL-1109.html
Otherwise, you need to replace the existing cable with another 8-pair cable (16 conductors)https://www.rgfrance.eu/Cables-reseaux-Ethernet-RJ45/Cables-RJ45-250-MHz-reseaux-IP-Cat.6/Cable-reseau-8-paires-2x4-paires-Cat.6-F-UTP-avec-ecran-gaine-LSZH-a-la-coupe?zenid=8gu1943q9ueoc8jhgkq71fpb94
so the principle is to use four pairs for each ethernet connection, ensuring you have a speed of 1000Mb/s for each, over 100m without problems, while keeping the pairs together and avoiding crossover...
It should be possible to use the existing cable in the conduit to pull a fish tape... and attach the new cable to this fish tape to pull it in the other direction, patience and secure well... add a bit of "yellow" grease and with two people, one pushing and the other pulling; in sync...
There you go, that's the idea presented.
If you run two Ethernet connections on the same cable, you will have to switch to 10/100 Mb/s and will no longer be able to operate in gigabit (1000 Mb/s) because you will need to use two conductors of the cable...
Let's say for home automation, that's enough, but depending on your computing and usage, it might not be suitable...
https://www.touslescables.com/doubleur-rj45-A6AL-1109.html
Otherwise, you need to replace the existing cable with another 8-pair cable (16 conductors)https://www.rgfrance.eu/Cables-reseaux-Ethernet-RJ45/Cables-RJ45-250-MHz-reseaux-IP-Cat.6/Cable-reseau-8-paires-2x4-paires-Cat.6-F-UTP-avec-ecran-gaine-LSZH-a-la-coupe?zenid=8gu1943q9ueoc8jhgkq71fpb94
so the principle is to use four pairs for each ethernet connection, ensuring you have a speed of 1000Mb/s for each, over 100m without problems, while keeping the pairs together and avoiding crossover...
It should be possible to use the existing cable in the conduit to pull a fish tape... and attach the new cable to this fish tape to pull it in the other direction, patience and secure well... add a bit of "yellow" grease and with two people, one pushing and the other pulling; in sync...
There you go, that's the idea presented.