I'm having problem setting up a VLAN network. I only have basic knowledge on VLAN and I'm not sure if I am doing the right thing here. Here are the details:
There are 2 classrooms, 20 computers in each room connected to a 3Com® SuperStack® 3 Switch 4226T (10/100 24-Port, 1000 1-uplink 1-downlink). The gigabit uplink on both 4226T switches are connected to the 3Com® Baseline Switch 2816-SFP Plus 16-Port (gigabit switch). Our linux server (runs web & mail) is connected to one of the ports in the 2816 gigabit switch. By default all ports on both gigabit & fast-eth switches are assigned to VLAN1 untagged. My plan is that each room belongs to one VLAN and computers from both rooms can communicate with the linux server for web & email access. I configured room A switch as VLAN 10 (all ports member of vlan 10) and the port in 2816 gigabit switch where room A switch is connected to as part of VLAN 10. Room B as VLAN 11. Now, the port in the gigabit switch where the server is connected I configured it as member of both VLAN 10 && 11. Computers within same vlan can communicate, but none of them can communicate with the server. Later on after further debugging using sniffer I found out that the port where the server is connected is tagged. I confirmed it in the 2816 switch user manual that port belonging to multiple vlans is tagged. I couldn't find an option to untag the overlapping port. Is there another way around this without using a VLAN router? I find the vlan router expensive unless you can recommend a good gigabit vlan router. I really appreciate any help fromt he experts.
There are 2 classrooms, 20 computers in each room connected to a 3Com® SuperStack® 3 Switch 4226T (10/100 24-Port, 1000 1-uplink 1-downlink). The gigabit uplink on both 4226T switches are connected to the 3Com® Baseline Switch 2816-SFP Plus 16-Port (gigabit switch). Our linux server (runs web & mail) is connected to one of the ports in the 2816 gigabit switch. By default all ports on both gigabit & fast-eth switches are assigned to VLAN1 untagged. My plan is that each room belongs to one VLAN and computers from both rooms can communicate with the linux server for web & email access. I configured room A switch as VLAN 10 (all ports member of vlan 10) and the port in 2816 gigabit switch where room A switch is connected to as part of VLAN 10. Room B as VLAN 11. Now, the port in the gigabit switch where the server is connected I configured it as member of both VLAN 10 && 11. Computers within same vlan can communicate, but none of them can communicate with the server. Later on after further debugging using sniffer I found out that the port where the server is connected is tagged. I confirmed it in the 2816 switch user manual that port belonging to multiple vlans is tagged. I couldn't find an option to untag the overlapping port. Is there another way around this without using a VLAN router? I find the vlan router expensive unless you can recommend a good gigabit vlan router. I really appreciate any help fromt he experts.