I found out that VLANs on the same switch can not occupy the same IP addressing space.  Since VLAN2 and VLAN3 both had 10.x.x.x, it created havoc for the switch.  Creating VLANs is not the same as having separate switches.  Victor
Hi All,  I am trying to reduce the number of switches we have on our network.  Currently we have 3 switches.  One on the public side of the firewall, one behind the firewall, and lastly one after the layer 7 load balancer.  Internet (public IP) - Swich1 - firewall - Switch2 (10.x.x.x) - Load Balancer - Switch3 (10.x.x.x)  I'm trying to reduce the number of switches by using 1 Dell 6248 switch and creating 3 VLANS.  VLAN1 - Firewall - VLAN2 - Load Balancer - VLAN3  I tested to make sure that no traffic is able to traverse into a different VLAN.  Switch 1 and 2 were replaced with VLAN1 and VLAN2.  Everything is good up to this point.  The moment I connect servers to VLAN3, servers in VLAN are not accessable from VLAN1/2.  If I use a separate 6248 in place of VLAN3, everything works.  I'm out of ideas.  Can 2 different VLANS be on the same subnet (ie 10.x.x.x)?  I need to have all 3 VLANs complete separate from each other as if they are separate swtiches.  Any help is much appreciated.  Regards,  Victor     
Separate VLANS on same subnet causing problems.