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This article mainly explains the "Linux system configuration of multiple IP and the method of detecting IP conflicts introduction", the article explains the content is simple and clear, easy to learn and understand, now please follow the editor's ideas slowly in-depth, together to study and learn "Linux system configuration of multiple IP and detection of IP conflicts of the method introduction" bar!

Configure a series of IP

Under linux, if you configure multiple IP, it is usually eth0.0... Eth0.1... eth0.x, etc., so if you want to configure a large number of IP, this configuration is also possible, but tedious, although this situation is rare.

For adding a large number of IP, there are certain rules, the RHCE / CentOS system provides a quick way to bind an IP scope so that we no longer need to create a large number of files, saving time. Such as:

The code is as follows:

# vim / etc/sysconfig/network-scripts/ifcfg-eth0-range0

IPADDR_START=10.1.0.100

IPADDR_END=10.1.0.200

CLONENUM_START=0

NETMASK=255.255.255.0

IPADDR_START is the first IP and IPADDR_END is the last IP. CLONENUM_START is the starting number that will be assigned to a series of interfaces (in this case, starting with eth0:0).

Activate the network card:

The code is as follows:

# ifdown eth0 & & ifup eth0

Detect IP conflicts

Having an IP address conflict means that more than one network device or computer has the same IP address. When configuring IP to the server, if the IP address is not planned in the previous stage, and the IP address is registered with the details, it is possible to assign the reused IP to another server.

So how do you detect IP address conflicts?

You can use the arp-scan tool. The tool sends ARP packets within the local area network to collect IP and MAC address information. If an IP address corresponds to more than one MAC address, there is an IP conflict.

1. Installation:

The code is as follows:

# yum install arp-scan

Install the EPEL source first.

two。 Use:

Thank you for your reading, the above is "the introduction of the method of configuring multiple IP and detecting IP conflicts under the Linux system". After the study of this article, I believe you have a deeper understanding of the method of configuring multiple IP and detecting IP conflicts under the Linux system, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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