Here's a rough scheme of my network: - http://i.stack.imgur.com/zrlJJ.png
The network is divided into VLANs. The linksys device is connected to a VLAN20 access port. Clients 4, 3, 2 ping the rest of the network just fine, but Client 1 and DC can ping the linksys ap, but can't ping clients 4, 3, 2. What's wrong?
EDIT: Here's a brief on net config:
Router 1 divides the 172.16.0.0 network into VLANs 10, 20, 30, 40, 50 and 111 and has the corresponding addresses in these subnets: 172.16.10.1, 172.16.20.1, 172.16.30.1 etc. All the VLANs except the 111 one are routed between each other.
Switches 1 and 2 only have addresses in VLAN10.
The Linksys WRP400 router is connected to a VLAN20 access port. Its static IP address is 172.16.20.100 (mask 255.255.255.0. Tried to apply the 255.255.0.0 but there's no such seeting). Its NAT and DHCP capabilities are disabled so it could act as an access point\switch.
I've noticed that I've also disabled the Dynamic Routing (RIP) feature along with the NAT setting. Turned it on now, but nothing changed. Should I add any static routes?