DHCP server invalid

RouterOS General
1

I’m tearing my hair out with this.

Simplified layout of the desired setup:

My network has grown quite large and available I.P. addresses are becoming scarce, so I’ve decided to configure one of my Wireless Routers to run as a second hotspot and DHCP server for the wireless clients that use it.

I’m trying to test it before I implement it, but I’m running into this problem:
The DHCP server I’ve set up on the wlan1 interface works, but as soon as I bridge eth1 and wlan1 together, it turns red and says “Invalid”.

Please help!

2

you shouldn’t need to bridge that. As you are using 2 different networks per interface.

3

Wireless clients cannot connect to the Internet unless I bridge eth1 and wlan1 together

The two RBs (on the right) communicate on the 172.23.0.0/24 subnet. Wlan1 on which I’ve set up the DHCP server, is on the 192.168.2.0/24 subnet.

4

It should work without being bridged. If you could post thee output of:

/ip address print
/ip route print
/ip dhcp-server export

without the bridge. if you heart is set on using a bridge then it will probably be because the dhcp server needs to be set to the the bridge interface and not wlan1. Though the point of a router is to join separate network. I would recommend not using a bridge.

5

Where is the masquerade on your network? Is it possible that the router with the masquerade does not know where the 192.168.2.0/24 net is? Maybe a route is needed. In the 172.23.0.254 router:

/ip route
add dst-address=192.168.2.0/24 gateway=172.23.0.234
6

you may also be missing a default gateway, therefore not able to access the internet