I'm trying to send a pocket from Vlan-10 to Vlan-50 and I keep on getting this reply I don't know exactly what it means. Please help me 

I'm doing a small school project for a small business with 5 departments and each department has 10 employees which makes a total of 50 employees. I used a 192.168.1.0 network address and a /27 as a subnet mask to subnet my network into 5 department ...