Georges P. Vanier 20162017mr. Mac's Virtual Existence



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We also proposed a virtual MAC address scheme that introduces a host identifier into layer 2 to accommodate heterogeneous wireless access, manage handover between wireless accesses, provide scalability, and ensure security. In this paper, we design the virtual MAC address scheme for Mobile Ethernet and describe the sequence diagrams of the scheme.

Macs are the only computers that allow you to run Mac OS X Lion Server (or any OS X flavor) along with Windows and Linux. Virtual machines on non-Apple PCs can’t run Mac OS X. Apple doesn’t permit running Mac OS X on non-Apple hardware in its user license agreement, so the virtualization software makers don’t enable it.

Imagine a Mac running two virtual machines — Lion Server and Windows 7. Both are running on a Mac OS X host. In each virtual machine window, you can control that operating system as you normally would run applications, configure settings, and access the Internet.

When the virtual machine is a server, users on the network access it as they would any other server. If multiple virtual machines run on a server Mac, the users see each as a separate server.

Windows 7 and Lion Server running in virtual machines in Snow Leopard.

For the latest news, tips, and troubleshooting information about running virtual machines on Macs, visit MacWindows.

With virtualization, there’s a host operating system (OS) and one or more guest OSes. The host OS (for instance, Mac OS X or Mac OS X Server) boots the real computer. On a Mac, a guest OS can be Mac OS X, Windows, Linux, or Unix.

Each guest OS runs in a virtual machine, which is a kind of a virtual reality for the guest OS. The guest OS thinks it’s running on a real computer. Although real hardware’s behind the scenes, the guest OS doesn’t have direct control over the hard drive, graphics, and other hardware: These pieces of hardware are virtualized in the virtual machine.

Georges P. Vanier 20162017mr. Mac's Virtual Existence City

For example, a virtual machine’s hard drive (the boot drive) is actually a file on the host Mac. This file can be dozens of gigabytes, containing the complete guest operating system and its applications, settings, and documents.

Apple presents App Store Best of 2020 winners - Apple. The virtual hard drive file is stored on the Mac’s real hard drive, but the guest OS doesn’t control the entire drive. The virtualization software creates the virtual machine and keeps the guest OS believing that it’s living in a real computer — kind of like The Matrix, but without Keanu Reeves.

Another type of virtualization software runs directly on “bare metal,” which means it doesn’t use a host OS. To picture it, remove the Mac OS X host and the Mac applications. Eliminating the host OS decreases the complexity and uses less RAM and processing power.

Abstract

Georges P. Vanier 20162017mr. Mac's Virtual Existence Center

Heterogeneous wireless access is being integrated into IP networks to support future wireless systems. The enhanced IP technologies being developed must address both handover issues related to mobility management and security issues related to wireless access. We previously proposed a network architecture, Mobile Ethernet, based on wide area Ethernet technologies, that reduces overhead involving handover by managing mobility in the IEEE802 MAC layer. We also proposed a virtual MAC address scheme that introduces a host identifier into layer 2 to accommodate heterogeneous wireless access, manage handover between wireless accesses, provide scalability, and ensure security. In this paper, we design the virtual MAC address scheme for Mobile Ethernet and describe the sequence diagrams of the scheme. We also clarify the effect of our proposed scheme from the viewpoint of scalability by comparing the simulated signaling traffic load at handover with that using FMIPv6.

Georges P. Vanier 20162017mr. Mac's Virtual Existence Date

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