I have a Linksys EA8300 router running OpenWrt 21.02.1.
I'm trying to connect a DHCP client interface to a VLAN ID 101 on eth1 (the internet connector at the EA8300 box). The eth1 is connected by a tagged VLAN connection to switch with a DHCP server connected to VLAN ID 101 (see network configuration below).
I tried several configuration options like the one below, but didn't succeed to get a network address from the DHCP server connected to VLAN ID 101. A similar configuration with the tagged VLAN connected to a port of the eth0 switch works fine, the DHCP client interface gets a network address from the the DHCP server.
Can someone tell me how to configure a tagged VLAN on eth1 at the Linksys EA8300 device?
What I can confirm, is that with OpenWrt 21.02.1 it is possible to configure VLAN on eth0/switch0. I successfully tested a configuration with 3 VLAN IDs, running untagged on 3 ports and tagged on the fourth port of switch0 in the EA8300. So I wondered, if some kind of driver level VLAN configuration would already allow to configure a VLAN on eth1.