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General • Re: Pass WAN over VLAN with SwithOS

Easiest solution is with just 1 vlan.
On the CSS:
- create a vlan (example vlan 5)
- member ports are the wan connection and the link to the CCR
- put the wan port (eth1) in "vlan receive": "only untagged", "Default VLAN ID": 5
- put the CCR port (eth24) in "vlan receive": "any"

On the CCR:
- create the same vlan id (5 in this example) on the CSS port (eth1)

From here you configure your router how you see fit.
Vlan on eth1 is the WAN
eth1 is the LAN

You can have bandwidth bottleneck because of the CSS-CCR link as all computers from CSS go through that link.
For example if all links are 1Gbps (including internet)
if pc from CSS eth5 is downloading something with 1Gbps, clients from the 2 devices are bottlenecked (say you copy a file from CSS eth21 to CCR eth 7).
The reverse is also true, internet speed will be affected if 2 computers transfer something, each connected to a different device (only if the link is maxed out)

Simple solutions is to go 10Gbps in the link between CSS and CCR.
Or run another link between the devices (example eth23->eth2) then you could untag the vlan traffic again so the vlan will only be needed on the CSS
Though this really depends on your actual traffic.

Statistics: Posted by RhoAius — Wed Feb 21, 2024 12:49 pm



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