I am having two routers (D-link DIR-882 and D-link DIR-878), both the same version of OpenWrt. DIR-882 is a master, DIR-878 is a slave dumb AP. I have 2 VLANs configured on a master (home VLAN 100 and IOT VLAN 25) mapped also to two wifi networks. Both routers are gigabit and are connected with cat5e ethernet cable.
Model: D-link DIR-882 A1
Openwrt: 22.03.2 r19803-9a599fee93
config interface 'loopback' option device 'lo' option proto 'static' option ipaddr '127.0.0.1' option netmask '255.0.0.0' config globals 'globals' option packet_steering '1' option ula_prefix 'fd54:3376:3a8e::/48' config device option name 'br-lan' option type 'bridge' list ports 'lan1' list ports 'lan2' list ports 'lan3' list ports 'lan4' config interface 'lan' option proto 'static' option ipaddr '192.168.1.1' option netmask '255.255.255.0' option ip6assign '60' option device 'br-lan.100' config interface 'wan' option device 'wan' option proto 'dhcp' option hostname '*' option peerdns '0' list dns '22.214.171.124' config interface 'wan6' option device 'wan' option proto 'dhcpv6' config interface 'IOTnetwork' option proto 'static' option ipaddr '172.16.1.1' option netmask '255.255.255.0' option device 'br-lan.25' config bridge-vlan option device 'br-lan' option vlan '25' list ports 'lan2:t' list ports 'lan4:u*' config bridge-vlan option device 'br-lan' option vlan '100' list ports 'lan1:u*' list ports 'lan2:t' list ports 'lan3:u*'
Mater router br-lan setting:
- port 1 = home VLAN 100 ethernet
- port 2 = tagged VLAN 25/100 connection to slave dumb AP
- port 3 = home VLAN 100 ethernet
- port 4 = untagged VLAN 25 ethernet
And the problem is - as you can see: ports 2 and 4 are only 100Mbps. I checked those cables very precisely and they are definitely ok (I know, the cable is always the problem, but looks here is not). When I change e.g. cables from port 1 to port 2, speed is the same (port 1 = 1Gbps, port 2 = 100Mbps) When I set port 4 to VLAN 100, the port is suddenly gigabit as e.g. port 1 (with the same cable). So ports in the router are also ok.
It looks that I have something wrong with my VLANs configuration, which is capping the speed to 100Mbps. This is annoying, because the dumb AP has only 100Mbps connection and wifi is then also limited to this speed.
Any idea what I am doing wrong?