I decided to set up VLANs on my computer. I was able to set up the adapters by “vconfig” this way:
modprobe 8021q
ifconfig eth1 down
ifconfig eth1 0.0.0.0 netmask 255.255.255.0 broadcast 192.168.96.255 up
vconfig add eth1 11
ifconfig eth1.11 hw ether AA:AA:AA:AA:AA:11
ifconfig eth1.11 192.168.96.211 netmask 255.255.255.0 broadcast 192.168.96.255 up
vconfig add eth1 12
ifconfig eth1.12 hw ether AA:AA:AA:AA:AA:12
ifconfig eth1.12 192.168.96.212 netmask 255.255.255.0 broadcast 192.168.96.255 up
Then, I developed a simple echo server and client to communicate each other just test the vlans. Unfortunately, the client is not able to connect to the server.
The ping works, the traceroute works (after ‘traceroute -t nat -L’ !). I tried to add the adapters to a bridge ‘br0’ by ‘brctl’, but no result.
So, my questions are,
how to set up a inter-vlan in a opensuse 11.3 so the apps be able to communicate from one vlan to the other?
You need routing for inter vlan communication. The easiest way to do this is to set up the router with subinterfaces in your case in vlan 11 and 12 and configure the routes on your openSUSE so that they point to the router interfaces as next hop for reaching networks outside the vlan. What’s more different vlan’s are different subnets from the IP point of view so your IP addressing defeats the purpose for vlan existence.
If You really want to use vlans You should change the addressing so that each vlan is a different subnet and set up routing. A great way to do this is use the vyatta linux distribution, which is free to use and can convert almost any PC to a full fledged IP router. Free Router, Firewall, VPN Download | Vyatta Core