Help with cross band repeating TP-LINK RE200

Hi all, that’s my first post in here!

I am trying to extend the wireless network with my RE200, to have better coverage of my garden. My setup is :

FritzBox 7530 for DSL router/voip/DECT (no wireless), network x.x.0.0
Netgear GS108Ev3 VLAN capable
ASUS RT-AC56U with Merlin Firmware, as primary wireless router both bands, network x.x.1.0
wireless (network x.x.1.0)
\\ 5GHz
Garden clients

Sorry for the poor schema. My goal would be to use 5GHz as a backbone to extend the 2.4GHz for a seamless roaming (same SSID) as was with the original TP-LINK firmware.

I am able to connect the 5 Ghz network as client to my router, and to create a 2.4 Ghz AP. Garden clients can only connect to internet until the ethernet cable is connected (lan-br configured as static IP of same network x.x.1.0), neither setting IP manually on clients. I’m quite sure to mess something with bridge settings. Can anybody help me with a working configuration?


Please post here the output of the following commands

uci export network; uci export wireless; uci export dhcp

Please use "Preformatted text </>" for logs, scripts, configs and general console output.

root@RE200:~# uci export network
package network

config interface 'loopback'
        option ifname 'lo'
        option proto 'static'
        option ipaddr ''
        option netmask ''

config globals 'globals'
        option ula_prefix 'fdda:b633:a56a::/48'

config interface 'lan'
        option ifname 'eth0'
        option type 'bridge'
        option proto 'static'
        option netmask ''
        option ipaddr ''
        option gateway ''
        option delegate '0'
        option stp '1'
        option igmp_snooping '1'
        list dns ''

config interface '5GHz'
        option proto 'dhcp'

config interface '24GHz'
        option proto 'dhcp'

root@RE200:~# uci export dhcp
package dhcp

config dnsmasq
        option domainneeded '1'
        option localise_queries '1'
        option rebind_protection '1'
        option rebind_localhost '1'
        option expandhosts '1'
        option readethers '1'
        option leasefile '/tmp/dhcp.leases'
        option resolvfile '/tmp/resolv.conf.d/'
        option localservice '1'

config dhcp 'lan'
        option interface 'lan'
        option ra 'static'
        option ra_slaac '1'
        list ra_flags 'managed-config'
        list ra_flags 'other-config'
        option ignore '1'
        option authoritative '0'

config dhcp 'wan'
        option interface 'wan'
        option ignore '1'

config odhcpd 'odhcpd'
        option maindhcp '0'
        option leasefile '/tmp/hosts/odhcpd'
        option leasetrigger '/usr/sbin/odhcpd-update'
        option loglevel '4'

root@RE200:~# uci export wireless
package wireless

config wifi-device 'radio0'
        option type 'mac80211'
        option channel '36'
        option hwmode '11a'
        option path 'pci0000:00/0000:00:00.0/0000:01:00.0'
        option htmode 'VHT80'
        option country 'IT'

config wifi-device 'radio1'
        option type 'mac80211'
        option hwmode '11g'
        option path 'platform/10180000.wmac'
        option htmode 'HT40'
        option country 'IT'
        option channel 'auto'

config wifi-iface 'wifinet0'
        option device 'radio0'
        option mode 'sta'
        option ssid 'MySSID'
        option key 'Mysecretkey'
        option encryption 'psk2'
        option network '5GHz lan'

config wifi-iface 'wifinet1'
        option device 'radio1'
        option mode 'ap'
        option ssid 'OpenWrt'
        option encryption 'psk2'
        option key 'Mysecretkey'
        option ifname '24GHz'
        option network 'lan 24GHz'

You cannot combine the interfaces in bridge like you have. In general you won't be able to bridge directly a wireless client (mode sta) with an interface.
To achieve what you want you should look at WDS (if the AC56U supports it) or go for relayd.


Or if you only need the garden users to have access to the Internet and not your whole LAN, set up a routed client.

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Garden LAN clients should be able to reach internal LAN, so NAT is not an option. I will try to use WDS (ac56u should support it from what I see from web interface) or go with relayd. I still can’t understand how those bridge works, if I forgot something or they work in a different way than the standard..
My CCNA and AWFSS are now 15 years old, so I forgot most of networking knowledge, this is a good way to refresh it a little!
Is anyway possible to have a crossband repeater or should I repeat each band?


You'll use one band for backhauling, using both would create a loop.
For AP you can use them both.

1 Like

Thanks for the answers!
I gave a try to WDS solution but I wasn’t able to make it work. So I went back to the original firmware (with sysupgrade, so consider working also with v1) and will retry with OpenWrt in the future.


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