Network Bonding
Video Activity
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Course
Difficulty
Intermediate
Video Transcription
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>> Hello Cybrarians.
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Welcome back to the Linux+ course here at Cybrary.
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I'm your instructor Rob Goelz,
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and in today's lesson we're
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going to discuss network bonding.
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Upon completion of the lesson,
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you'll be able to understand
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the concept network bonding,
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we're going to describe different types of bonds,
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bond modes, and we're also
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going to know how to configure a network bond.
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Network bonding in a nutshell allows
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a Linux system to see multiple interfaces.
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We connect two interfaces together as one interface,
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and that's a network bond,
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generally a bonded interface pair.
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You can see that pretty commonly.
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Why bond? Well,
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there's three bond modes that
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give some insight into this.
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The aggregation, which is mode number 4,
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means that all interfaces in the bond are
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combined into one large network pipe.
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Active/passive is used when one interface is up
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and the other interface is available or passive,
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and one interface can become available.
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The passive interface can become
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available if the active interface fails.
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Then finally we have mode 5, load balancing,
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and that means that network traffic is shared between
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all interfaces that are in that bond.
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In CentOS you can configure
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a bond by creating a bond script file,
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and that's in the usual place
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etc/sysconfig network-scripts.
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You say etc/sysconfig/network-scripts/ifconfig-bond name
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and that bond will continue.
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In CentOS, you can configure
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a bond by creating a bond script file at
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etc/sysconfig/network-scriptsifconfig-bond name;
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it's a mouthful.
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At any rate, you can add your interfaces into this bond
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and configure the interfaces that are
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going to be involved in the bond.
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You would configure the bond in this file,
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also specifying the bond mode and finally,
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you would modify individual interface files
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and add them to the bond.
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In Ubuntu, you can configure a bond by
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creating a file at etc/network interfaces.
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Alternatively, you can modify
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the net plane YAML file, etc/net plan,
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etc and you can create a bond and network manager
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using either nmcli or nmtui we saw before.
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In this lesson we covered network bonding in Linux,
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we also talked about the different types of bond mode,
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and we covered how to configure
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bonding in CentOS and Ubuntu.
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