I'm trying to get my head around a few things. Firstly I understand that if you have say 3 switches with 3 vlans you can use a router and a trunk link to route between these vlans. With this you need just one interface correct ?
Now I'm trying to work out, say I have one LAN with 3 VLANS, for arguments sakes VLAN 1 is my management vlan, VLAN 2 is my sales VLAN and VLAN 3 is my support vlan. I am using trunking on one of my routers fast ethernet port to route between these happy as larry.
Now say on my other fast ethernet port of the same router I have the same setup, exactly the same VLAN numbers etc. Is it possible to send VLAN information from one network to another using the router or does this vlan info have only LAN significance rather than WAN significance ?
A bit of an odd question (I hope it makes sense) if not I can try and clarify but just let me know what you think.
Cheers folks ...