“Router-on-a-Stick” with VLAN with XSG1250-12

IvanIlTerribile

System configuration:
ONT to XSG1250-12 to FRITZ!Box 5590 Fiber

System Issue:
Since I cannot take advantage of the fiber port on the FRITZ!Box I am trying to take advantage of my 2.5GB connection anyway by avoiding the connection via ont since it would occupy the only 2.5GB WAN port and limiting myself to using the 1GB LANs.

System problem solution:
An attempt is made to integrate XSG1250-12 as a bridge between ONT and FRITZ!Box, with the goal of creating a VLAN for the WAN connection and using the switch's 2.5GB ports to connect devices.

XSG1250-12 configuration problem:
Port 10: ONT Connection, Port 11: Connection to FRITZ!Box WAN Port.

• a VLAN ID:835 tag was created (as requested by my provider) in which only port 10 and 11 tagged are members
  -VLAN ID:1 all ports are untagged, port 10 is not a member and port 11 is tagged to allow “Router-on-a-Stick”
  -PVID 835 port 10 remaining, PVID remains in 1
  the system is partly working, i.e., the internet connection is coming to the FRITZ!Box (Wi-Fi and LAN ports working), but none of the switch ports are working.
  I have also tried other settings but the problem persists.
  I should add that DCHP on the FRITZ!Box, I also tried disabling it on the XSG1250-12 but to no avail.

I am asking for help in properly configuring my XSG1250-12 with the goal of taking full advantage of my connection by using the “Router-on-a-Stick” method

Thank you for your support.

Zyxel_Melen

Hi @IvanIlTerribile,

Since you mentioned "the system is partly working, i.e., the internet connection is coming to the FRITZ!Box (Wi-Fi and LAN ports working), but none of the switch ports are working.", I want to know your meaning of none of the switch ports are working. Do you mean the device connect to the switch cannot have internet? Please share more details about your issue, thanks.

And what's your topology? Is it like below?

ISP —— ONT——(P10) XGS1250(P11) —— (WAN)FRITZ!Box?

By the way, are FRITZ!Box fiber port and WAN port combo port?