NAT router affording multiple VLANs instead of one LAN

[imays]

I am trying to install a NAT router which affords multiple VLANs. I almost did it with pfsense today version but something goes wrong.
It runs fine if it affords one LAN, of course. However, if I add VLAN (and DHCP server for each VLAN), it cannot ping to even its VLAN gateway(aka VLAN interface IP).

What am I missing? I think there must be other people trying similar to mine, but I cannot find the guide document.

Please reply. Thank you.

[Supermule]

Ping rule for VLAN??

[imays]

@Supermule:

Ping rule for VLAN??

I tried 'ping xxx.xxx.xxx.xxx'. Sorry, I may misunderstood your question.