USG60 - Getting 2 subnets to talk to each other

robbiebit Posts: 2  Freshman Member
edited April 2021 in Security
I've attached a Visio diagram of my issue but here's the wordy version;

I have a ZyXEL USG60 behind my ISP gateway that is setup for a /29 block (8xIP) of public IP addresses.

I have setup a br1 bridge interface on the USG60 that contains WAN1 and LAN1. The br1 bridge interface allows me to deliver a public, static IP to the external interface of the Google WiFi, which creates a NAT subnet to 192.168.30.XXX.

In LAN2 I have my HOMELAB subnet which is on the NAT subnet of, delivered by the USG60.

Devices on the HOMELAB subnet (20.x) are unable to talk/ping/communicate with devices on the GWiFi subnet (

What further configuration must be done to allow these two subnets to communicate?




  • Jeremylin
    Jeremylin Posts: 166  Master Member
    For my point of view, the set Google wifi in bridge mode, and USG in NAT router. Therefore, you can let wifi clients communicate with Lan2 client via routing.
  • robbiebit
    robbiebit Posts: 2  Freshman Member
    Unfortunately @sjeremylin if I put the Google WiFi in bridge mode, I'm unable to use the guest network feature. 

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