This value configures which Switch Resource Management (SRM) mode, routing or vpws (virtual private wire service), the switch should operate in, and any change here needs to be saved and only takes effect after the device is rebooted. Administrators set this to reallocate the switch's internal hardware resources toward either standard IP routing workloads or Layer-2 VPWS pseudowire services, depending on how the switch is being deployed. For example, an admin repurposing a switch from a routed-access role to a Metro-Ethernet pseudowire role would set this to vpws(2) and then reboot the device to apply the change.