Our IT department is getting shifted to another location with better equipments. Currently in the head office we have 2 different sub nets using CISCO 1841 router (static IP routes), with non manageable gigabyte switches.
In the new location we will be having L3 & L2 switches (D-Link), and these 2 location will be connected through fiber data link from the ISP. Now my question is, can we have the same sub nets in the branch, which are been used in the head office? For example if in the head office the sub nets are 192.168.2.0/24 and 192.168.3.0/24, can we use these same sub nets in the branch? in way both the location should be on these same sub nets.
If this is possible, what all configurations are required to be done in;
(a) in the head office 1841 router which is having static routes.
(b) configuration that are to be done in L3 and L2 switches (D-Link) in branch office?