The problem is, if the link goes down and everyone uses DSL through wireless, then they cannot print, cannot access the server machine, because the network and IP are different.
I need to merge DSL connection with my local network so when the link is down and users are using DSL, they can print at the same time and they can access server folders. Note: I have DHCP IP.
However, I truly suspect that the issue is not really a network-IP issue but more of a configuration issue on the Windows authentication and directory access-side. Remote domain controllers exist to provide authentication and printing services to remote offices when the head office is not accessible. It sounds like authentication requests and printing services are still going to the head office Active Directory (AD) server before being transmitted to the local domain controller and printer. To verify, ensure that the domain controller has access to synchronize the AD catalog and authenticate users. I would ensure that the domain controller is set up correctly and then purposefully disconnect from the head office (after hours to not interrupt business day activities of course) to test whether this fail-safe method works.
Ideally you'd rarely have to have head office access to print locally with this configuration. I would provide you a few more details but it depends on the version of domain controller and your AD setup as to how to accomplish this. May the force be with you though! And have some great AD fun.
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