I have 4 cataylst 3550 switches with an L3 IOS recently installed.
These 4 switches are to be used at different sites connected via Telewest National Ethernet circuits.
I understand how to configure this by configuring L3 ports; however, I want to use VLANs and I am not sure how to use VLANs in this setup. I understand the use of VLANs with L2 switches using an L3 switch or Router to route between the VLANs.
Two of the 3550s will be located at HQ and one at each of the other two sites, example:
- HQ1 and HQ2 connected directly to one another.
- Office1 connected directly to HQ1
- Office2 connected directly to HQ2
I only want one port from each switch used to interconnect them together, the other ports will be in the same VLAN to connect to the local LAN.
The main point I do not understand is how can you create a VLAN between two point to point links (switch to switch) without assigning an IP address to the interfaces? Also how routing would work as I am unsure if I can use EIGRP in a pure VLAN environment.
If you could provide a high level list of what I need to do to create this environment it would be much appreciated. I can provide more info if required.