I currently have two sites that are connected via a 100mb metro e (NLAN) connection, but I will be adding a new site temporarily during a move. I have a router on each end of the current metro e connection and each site has different VLANs and subnets. Site A is the main location and contains 95% of the server infrastructure. I will be gradually moving equipment from site A to the new building (site C) but I need to keep services available to site A and site B during the long move. I need Site A and Site C to have the same VLANs and subnets. At this point I’m thinking I will do the following:
1. Take out the routers on each end of the metro E connection leaving a flat layer 2 network
2. Connect a switch to the metro e connection at all three locations. Create an LACP trunk between the switches over the 100mb metro e to both locations and pass my VLANs that way.
3. After everything is moved to the new site, add the routers back and configure the way it was previously or leave it the way it is.
Is there a better way of doing this? I need servers in the new location and the old location on the same subnet communicating with each other. I’m worried about a large broadcast domain.
