I am finally upgrading 6 buildings to fiber and decided with the any-to-any configuration. I just received an email regarding Vlan IDs for each building.
Currently the T1s are configured on serial interfaces on Cisco router and their IPs are on a different subnet compared to the LANs subnet for that particular building.
i.e. Building #1 - LAN is 192.168.8.0/24 and the serial Int is 192.168.9.1 and 192.168.9.2 for each end of the T1.
Should I keep this type of reasoning for the fiber?
I.e Building #1 - LAN is 192.168.8.0/24 and the Fiber VLAN ID is 9
AT& T wants a list of VLAN IDs but i want to make sure i am setting this up correctly.