A first mobility management entity (MME) device receives an attachment request that includes information associated with a user device. The first MME device creates a context for the user device based on the information, stores the context, and creates an optimized context based on the context, where a size of the optimized context is smaller than a size of the context. The first MME device also identifies a second MME device that is a backup for the first MME device, and transmits the optimized context to the second MME device.