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Red Hat Enterprise Linux Server Cookbook

You're reading from   Red Hat Enterprise Linux Server Cookbook Over 60 recipes to help you build, configure, and orchestrate RHEL 7 Server to make your everyday administration experience seamless

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Product type Paperback
Published in Dec 2015
Publisher
ISBN-13 9781784392017
Length 250 pages
Edition 1st Edition
Tools
Concepts
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Authors (2):
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Jakub Gaj Jakub Gaj
Author Profile Icon Jakub Gaj
Jakub Gaj
William Leemans William Leemans
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William Leemans
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Toc

Table of Contents (12) Chapters Close

Preface 1. Working with KVM Guests FREE CHAPTER 2. Deploying RHEL "En Masse" 3. Configuring Your Network 4. Configuring Your New System 5. Using SELinux 6. Orchestrating with Ansible 7. Puppet Configuration Management 8. Yum and Repositories 9. Securing RHEL 7 10. Monitoring and Performance Tuning Index

Creating a VLAN interface


VLANs are isolated broadcast domains that run over a single physical network. They allow you to segment a local network and also to "stretch" a LAN over multiple physical locations. Most enterprises implement this on their network switching environment, but in some cases, the tagged VLANs reach your server.

Getting ready

In order to configure a VLAN, we need an established network connection on the local network interface.

How to do it…

For the sake of ease, our physical network interface is called eth0. The VLAN's ID is 1, and the IPv4 address is 10.0.0.2, with a subnet mask of 255.0.0.0 and a default gateway of 10.0.0.1.

Creating the VLAN connection with nmcli

With nmcli, we need to first create the connection and then activate it. Perform the following steps:

  1. Create a VLAN interface using the following command:

    ~]# nmcli connection add type vlan dev eth0 id 1 ip4 10.0.0.2/8 gw4 10.0.0.1
    Connection 'vlan' (4473572d-26c0-49b8-a1a4-c20b485dad0d) successfully added.
    ~]...
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