VMware Workstation 5.5Configuring a Virtual Network

VMware的三个虚拟交换机设备:

VMnet0：用于虚拟桥接网络下的虚拟交换机

VMnet1：用于虚拟Host-Only网络下的虚拟交换机

VMnet8：用于虚拟NAT网络下的虚拟交换机

VMware的两个虚拟网卡：

VMware Network Adapter VMnet1  --  Host用于与Host-Only虚拟网络进行通信的虚拟网卡

VMware Network Adapter VMnet8  --  Host用于与NAT虚拟网络进行通信的虚拟网卡

一、桥接网络（Bridged Networking）

Bridged networking connects a virtual machine to a network using the host computer's Ethernet adapter.

Bridged networking is set up automatically if you select Use bridged networking in the New Virtual Machine Wizard or if you select the Typical setup path. This selection is available on a Linux host only if you enable the bridged networking option when you install VMware Workstation. If your host computer is on an Ethernet network, this is often the easiest way to give your virtual machine access to that network. Linux and Windows hosts can use bridged networking to connect to both wired and wireless networks. If you use bridged networking, your virtual machine needs to have its own identity on the network. For example, on a TCP/IP network, the virtual machine needs its own IP address. Your network administrator can tell you whether IP addresses are available for your virtual machine and what networking settings you should use in the guest operating system. Generally, your guest operating system may acquire an IP address and other network details automatically from a DHCP server, or you may need to set the IP address and other details manually in the guest operating system. If you use bridged networking, the virtual machine is a full participant in the network. It has access to other machines on the network and can be contacted by other machines on the network as if it were a physical computer on the network. Be aware that if the host computer is set up to boot multiple operating systems and you run one or more of them in virtual machines, you need to configure each operating system with a unique network address. People who boot multiple operating systems often assign all systems the same address, since they assume only one operating system will be running at a time. If you use one or more of the operating systems in a virtual machine, this assumption is no longer true. If you make some other selection in the New Virtual Machine Wizard and later decide you want to use bridged networking, you can make that change in the virtual machine settings editor (VM > Settings). For details, see Changing the Networking Configuration.

二、NAT模式

NAT gives a virtual machine access to network resources using the host computer's IP address.

A network address translation connection is set up automatically if you follow the Custom path in the New Virtual Machine Wizard and select Use network address translation. If you want to connect to the Internet or other TCP/IP network using the host computer's dial-up networking or broadband connection and you are not able to give your virtual machine an IP address on the external network, NAT is often the easiest way to give your virtual machine access to that network. NAT also allows you to connect to a TCP/IP network using a Token Ring adapter on the host computer. If you use NAT, your virtual machine does not have its own IP address on the external network. Instead, a separate private network is set up on the host computer. Your virtual machine gets an address on that network from the VMware virtual DHCP server. The VMware NAT device passes network data between one or more virtual machines and the external network. It identifies incoming data packets intended for each virtual machine and sends them to the correct destination. If you select NAT, the virtual machine can use many standard TCP/IP protocols to connect to other machines on the external network. For example, you can use HTTP to browse Web sites, FTP to transfer files and Telnet to log on to other computers. In the default configuration, computers on the external network cannot initiate connections to the virtual machine. That means, for example, that the default configuration does not let you use the virtual machine as a Web server to send Web pages to computers on the external network. If you make some other selection in the New Virtual Machine Wizard and later decide you want to use NAT, you can make that change in the virtual machine settings editor (VM > Settings). For details, see Changing the Networking Configuration.

三、Host-Only模式

Host-only networking creates a network that is completely contained within the host computer.

A host-only network is set up automatically if you select Use Host-only Networking in the New Virtual Machine Wizard. On Linux hosts, this selection is available only if you enabled the host-only networking option when you installed VMware Workstation. Host-only networking provides a network connection between the virtual machine and the host computer, using a virtual Ethernet adapter that is visible to the host operating system. This approach can be useful if you need to set up an isolated virtual network. If you use host-only networking, your virtual machine and the host virtual adapter are connected to a private Ethernet network. Addresses on this network are provided by the VMware DHCP server. If you make some other selection in the New Virtual Machine Wizard and later decide you want to use host-only networking, you can make that change in the virtual machine settings editor (VM > Settings). For details, see Changing the Networking Configuration. Routing and Connection Sharing If you install the proper routing or proxy software on your host computer, you can establish a connection between the host virtual Ethernet adapter and a physical network adapter on the host computer. This allows you, for example, to connect the virtual machine to a Token Ring or other non-Ethernet network. On a Windows 2000, Windows XP or Windows Server 2003 host computer, you can use host-only networking in combination with the Internet connection sharing feature in Windows to allow a virtual machine to use the host's dial-up networking adapter or other connection to the Internet. See your Windows documentation for details on configuring Internet connection sharing.