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Forum Discussion
HammerG
Jun 04, 2024Aspirant
Using GS308Ts How to VLAN Cable Modem and LAN?
I'm trying to get the output from a cable modem to another floor using 2 GS308T smart switches. Additionally, the LAN will need to be passed to the same location. I believe I'll need an input port ...
- Jun 05, 2024
Well, that might get the cable modem to the far end, but would leave the LAN without connectivity on one side.
So, this is what works.
VLAN 10 -INet
VLAN 20- LAN
change management VLAN to 20
On the modem facing switch:
Ports 1-6 Add VLAN 20 untagged, remove VLAN 1 PVID 20
Port 7 Add VLAN 10 and VLAN 20 tagged, remove VLAN 1
Port 8 Add VLAN 10 untagged PVID 10
On the router facing switch:
Ports 1-6 Add VLAN 20 untagged, remove VLAN 1 PVID 20
Port 7 Add VLAN 10 and VLAN 20 tagged, remove VLAN 1
Port 8 Add VLAN 10 untagged. PVID 10
All works well, router get an IP from the cable modem, LAN is present on both switches.
As a bonus, this is working through a pair of 2.5Gb MoCA devices as there is no way to run cables between each location. At least, not affordably.
HammerG
Jun 04, 2024Aspirant
There are no switches in the path save the Netgear.
But, I have tested this with a second router that is unable to get a DHCP address from the existing LAN through the VLAN as I set it up.
This did work through a now defunct Microtik pair of switches. Those are way different from the Netgear equipment in configuration.
But, I have tested this with a second router that is unable to get a DHCP address from the existing LAN through the VLAN as I set it up.
This did work through a now defunct Microtik pair of switches. Those are way different from the Netgear equipment in configuration.
schumaku
Jun 04, 2024Guru - Experienced User
So what's' the intention with these two GS308T switches then? If not doing something smart, and have these in the WAN link side of a cable Modem, these will capture two public IP addresses ...
Afraid, I can't understand what for you run a test with yet another NAT router....
- HammerGJun 04, 2024AspirantI think your missing the point.
Neither Netgear uses DHCP. Neither get or try to get any address.
If I connect a router in to either and connect the cable modem to that switch as well, the router gets an IP from the router.
What I'm trying to do in essence is to extend the modem's port to a router in a different area via VLAN. Trunking will allow the LAN to be in each Netgear as well
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