Shulou(Shulou.com)06/02 Report--

Write before the opening:

First of all, thanks to Mo Tianlun's 3 free public classes, from virtual machine installation, linux installation, to oracle database installation, Jiang teacher took me to get started, many times stuck in the network configuration, but also checked a lot of information, tried N times finally network connection success!

NAT Principle

WMWare NAT is equivalent to setting up a virtual router between virtual machines and hosts. Note that the last bit of gateway IP is set to 2, not 1.

Because it is equivalent to setting up a router, the network segment in the virtual machine can be different from the physical machine. My physical machine segment is 10.0.1.

Nat configuration

1. Open Virtual Network Editor and add Virtual Network VMnet8.

Subnet IP: 192.168.80.0

Subnet mask: 255.255.255.0

Gateway IP: 192.168.80.2

If the gateway IP is 192.168.80.1, the test network connection fails.

VMnet8 can be seen in the physical machine network connection

2. Edit virtual machine settings and add NAT network card (note that the first network card is used here)

3. Configure linux network, DNS and gateway address are the same, test found DNS can also use physical machine DNS (configure the first network card)

4, test the network, in the physical machine and linux system test separately

ping IP address

knowledge expansion

ifconfig View network configuration status

Go to/etc/sysconfig/network-scripts directory

View Network Profile ifcfg-ens33

information on

configured

description

DEVICE=ens33 NIC device name, ens33 indicates the first NIC BOOTPROTO=none Whether to automatically obtain IP (none, static, dhcp) IPV6INIT= yesIPv6 Whether to enable UUID Unique ID ONBOOT=yes Whether to start with network services The current NIC takes effect DNS1 =192.168.80.2DNSIPADDR=192.168.80.129IP address GATEWAY=192.168.80.2 Gateway summary

1. In the case of not mastering the principle at the beginning, NAT mode virtual network and physical machine network use the same network segment, which is unnecessary;

2. The last bit of the virtual network gateway is 1. Because it is occupied, the connection test has been unsuccessful. The virtual network gateway and the Linux gateway must be the same.

3. NAT card is not set for virtual machine;

4. NAT network card does not correspond to the network card configuration in Linux system;

5, the network configuration in Linux, first automatically obtained, and then manually configured.

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