Switch VLAN to second Switch with AP and XGS firewall

need help with VLANs

we have XGS2100, APX120 AccessPoints and Sophos Switches
All products have latest firmware

Configuration for 1 Sophos Switch was no problem, this is current config
All configuration is trough Sophos Cloud Central (Firewall, Switch & Wireless)

Firewall XGS -->> Sophos Switch -->> AccessPoints

Firewall
Port6 192.168.1.1/24  (AccessPoints)
Port6.101 - 192.168.100.1/24 (VLAN101 - DATA1)
Port6.102 - 192.168.101.1/24 (VLAN102 - DATA2)
Port6.103 - 192.168.102.1/24 (VLAN103 - DATA3)
Port6.104 - 192.168.103.1/24 (VLAN104 - DATA4)

Switch1
Port 1-2 Default VLAN:1 Untagged  (LAN & MGM)
Port 10-20 AP VLAN:100 Untagged
Port 10-20 DATA1 VLAN:101 Tagged
Port 10-20 DATA2 VLAN:102 Tagged
Port 10-20 DATA3 VLAN:103 Tagged
Port 10-20 DATA4 VLAN:104 Tagged

AccessPoint1
APX120  (IP: 192.168.1.2)  connected to Port 11 [switch1]
SSID: WIFI-DATA1 VLAN ID: 101
SSID: WIFI-DATA2 VLAN ID: 102
SSID: WIFI-DATA3 VLAN ID: 103
SSID: WIFI-DATA4 VLAN ID: 104

Firewall [Port6] -->> Switch1 [Port10]


For the second switch I am not able to get AP online
What is the VLAN setting?

Firewall XGS -->> Sophos Switch1 -->> Sophos Switch2 -->> AccessPoints


Can I use Switch1 [Port 20] -->>  Switch2 [Port 10]
Should both switches have VLAN:100 Untagged

If I missed importand info please let me know

Thank you!



Added TAGs
[edited by: Raphael Alganes at 3:59 AM (GMT -8) on 23 Feb 2024]