Submit a design for a multi-site corporation. Xebra Paint and Plaster is a leading provider to the Midwest construction market. They have corporate offices located in Muskogee WI and Chicago IL. Manufacturing facilities are located in Norman OK and Addison IL. In addition, the sales force is 100% remote\teleworker. The specifications for the locations are below:

Muskogee: 1 office building, 3 floors. Staff at this location include: Senior management, accounting, HR and the corporate call center. The primary data center for Xebra and the primary corporate internet connection is also located here.

Chicago: 1 floor leased space in a multi-tenant office building. The Marketing division is based out of this location as well as a remote data center.

Norman and Addison are identical in specification. Both are manufacturing plants with 4 buildings each. All buildings need connectivity to the corporate network.

Design an enterprise network that will allow Xebra accomplish the following:

1. All sites need access to the corporate data center for email, ERP, CRM, internet and other data resources
2. It is critical that the remote data center in Chicago stay synced with Muskogee and that the company can failover to Chicago in an emergency
3. Remote\teleworkers need access to the resources in the data center
4. Due to the sensitive nature of their operations accounting and HR should be isolated from the other network users
5. Redundant connection is only necessary between Muskogee and Chicago