Wireless Client Mode as failover for WAN

Installing and Using OpenWrt Network and Wireless Configuration
1

Hi all,

I want to configure openwrt in a way that I want to have failover connection via WIFI (working as client) when there is no cable attached to WAN port (or internet is not available).

As for now I have:

  1. Laptop is connected to router
  2. Router is connected to WiFi network as a client. Laptop has access to internet using wifi network external IP
  3. Router WAN is then connected to another router's (router 2) LAN. Laptop has access to internet using router 2 network external IP
  4. Router WAN is disconnected. Laptop has no access to internet.
  5. To fix 4 I need to restart the router.
    What might be the issue for not switching to WiFi network?

I need the following to work:
Primary connection WAN.
In case of WAN being down use WiFi Client Network
WAN is back use it again.

1 Like
2

If you set up both wireless networks as WAN, you should be able to use mwan3 for fail over automation

2 Likes
3

/etc/config/wireless:

config wifi-iface 'my_wwan'
        option network 'wwan'
        option ssid 'my_SSID'
        option encryption 'psk2'
        option device 'radio0'
        option mode 'sta'
        option key 'my_SSID_Key'

/etc/config/network:

config interface 'wwan'
        option proto 'dhcp'
        option dns '8.8.8.8 8.8.4.4'
        option metric '40'

/etc/config/firewall

config zone
        option name 'wan'
        option output 'ACCEPT'
        option forward 'REJECT'
        option masq '1'
        option mtu_fix '1'
        option network 'wan wan2 wan3 wwan'
        option input 'DROP'

/etc/config/mwan3:

config interface 'wwan'
        option enabled '1'
        list track_ip '8.8.8.8'
        list track_ip '8.8.4.4'
        option reliability '1'
        option count '1'
        option timeout '2'
        option interval '5'
        option down '8'
        option up '3'
        option initial_state 'online'
        option family 'ipv4'
        option track_method 'ping'
        option size '56'
        option check_quality '0'
        option failure_interval '5'
        option recovery_interval '5'
        option flush_conntrack 'never'

config member 'wwan_m4_w1'
        option interface 'wwan'
        option metric '4'
        option weight '1'

config policy 'wan_2_3_w'
        list use_member 'wan_m1_w3'
        list use_member 'wan2_m2_w2'
        list use_member 'wan3_m3_w1'
        list use_member 'wwan_m4_w1'
        list last_resort 'unreachable'

config rule 'default_rule'
        option dest_ip '0.0.0.0/0'
        option proto 'all'
        option sticky '0'
        option use_policy 'wan_2_3_w'
1 Like
4

@frollic @codemarauder thank you guys, I will test tonight and will get back with some results.

5

Works perfectly. I just changed policy also for https & ipv6

6

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