But when I looked at such I would also look at my NETMASK and Gateway entries.
Van1 ============ vlan2 ============= vlan3 =========== vlan4
172.16.1.0 172.16.2.0 172.16.3.0 172.16.4.0
172.16.1.100:8080 ======= proxy server=========================
As per scenario there are 4 vlans configured with inter vlan routing. Proxy server (172.21.1.100) is working well in vlan1, all clients can access internet through this in vlan1 but the problem is that client pc's other than vlan1 are not able to communicate via proxy server eg. Vlan2, vlan3, vlan4 pcs.