Dual-WAN AR750S cannot see through original WAN port

Technical Support for Routers
1

I’ve turned an AR750S into a dual-hardwire WAN router by putting the first LAN port on its own VLAN, and adding the mwan3 package. However, now I’m am unable to access whatever is connected to WAN1 (the original WAN port) from an end device. I can ping it from within the router’s LuCI diagnostics, and it seems to get Multi-WAN routed just fine.

What might I be doing wrong that causes the router to refuse a downstream connection up to my WAN1?

/etc/config/network:

config globals 'globals'
option ula_prefix 'fc00:XXXX::/64'

config interface 'lan'
option type 'bridge'
option ifname 'eth0.1'
option proto 'static'
option netmask '255.255.255.0'
option ip6assign '60'
option hostname 'GL-AR750S-XXX'
option ipaddr 'XXX'

config interface 'WAN1'
option ifname 'eth0.2'
option proto 'dhcp'
option hostname 'GL-AR750S-XXX'
option metric '10'

config interface 'WAN2'
option ifname 'eth0.3'
option proto 'dhcp'
option hostname 'GL-AR750S-XXX'
option metric '11'

config interface 'WAN1v6'
option ifname 'eth0.2'
option proto 'dhcpv6'

config interface 'WAN2v6'
option ifname 'eth0.3'
option proto 'dhcpv6'

config interface 'wwan'
option proto 'dhcp'
option metric '20'

config switch
option name 'switch0'
option reset '1'
option enable_vlan '1'

config switch_vlan
option device 'switch0'
option vlan '1'
option ports '0t 3'
option vid '1'

config switch_vlan
option device 'switch0'
option vlan '2'
option ports '0t 1'
option vid '2'

config switch_vlan
option device 'switch0'
option vlan '3'
option ports '0t 2'
option vid '3'

ar750s%202ethwan
ar750s%202ethwan465×653 27 KB

no%20wan1

2

Are you configuring firmware and DHCP as well?

3

The firmware are all the latest testing build, and DHCP I haven’t touched. Really the only configs I mess with are Network and mwan3 as shown

4

If you create dual-wan, you need to change those files.

/etc/config/network
/etc/config/dhcp
/etc/config/firewall
/etc/config/mwan3

5

Hello!

I am looking for an example of how to configure dual WAN. Would you mind posting your configuration?

Thanks!

6

For your information, please compare the new folder with old folder.

Dual WAN Configuration File.zip (5.2 KB)

7

Thank you very much @kyson-lok :smiley:

8

Hello mate, I’m looking for dual WAN config for GL-B1300 (Convexa-B), is this config compatible? or do you have better config for GL-B1300? I’ve tried so many tutorials but nothing is working.

Thank you!

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