Networking doubt about subnets.

[periko]

Guys, could some here please explain me this situation.

I'm working with pfsense 2.0.3 i386, my box have 3 nics:

em0 WAN PPPoE
em1 Wifi 172.16.1.0/24
vr0 LAN 192.168.2.0/24

My LAN is working without any issue, the doubt is with my Wifi NIC, I first setup the NIC with this info:

WiFi: 172.16.1.1/22 static

I connect machines there and they have a lot issue trying to communicate to the outside, they get IP from the DHCP service running in this NIC.

The connection was like unstable, dns took a lot times to get back with answer, update task the took a lot of time and sometimes they fall with errors speaking about centos client.

My LAN no issue.

After of couple of hours I found the solution, I change the Nic WiFi CIDR and done issue fix it.

Why this? All my subnets must be in with the same netmask?

NIC-A 192.168.1.0/24
NIC-B 172.16.1.0/24
NIC-C 10.10.1.0/24

Any comment I will appreciated a lot, thanks!!!

[ptt]

I have pfSense 2.0.x working "OK" with mixed subnets masks, /28, /25, /24 & /22…. perhaps your 172.16.1.0/22  are conflicting with the PPPoE GW... i'm not an expert, just guessing ;)

[periko]

The thing is that my ISP settings won't conflict with my internal settings.

[phil.davis]

You should have no problem with different masks. I have places with /22 main LAN and other small LANs using /24.