Default algorithm considers only MAC addresses (layer2), In this case we can only use one Ethernet card at a time. Network packets transmit based on hash of network packet’s source and destination.
The single logical bonded interface’s MAC address is externally visible on only one NIC (port) to avoid distortion in the network switch. In this only one slave Ethernet card in the bond is active.Another slave Ethernet cards only becomes active only when the active slave fails. Network packets transmit in sequential order from the first available network interface (NIC) slave towards the last one.This way every Ethernet card used for send and receive network packets.So this mode has load balancing and fault tolerance feature. Most readers only like to know configure steps of Linux bonding, But i am covering bit more details for Bonding modes which are like methods or algorithm used in Bonding driver to implement bonding on Linux machine. But i am not sure, how many peoples like to insight concepts of Bonding. In above command’s output, it shows many of things which used to know basic concept of Bonding in Linux systems.
We can find out information regarding Linux bonding driver with below command.
Linux bonding driver used for Link aggregation on Nics in Linux operating systems. Linux or Ethernet bonding is just a small part of it, which used over Ethernet card for network connectivity. You can refer Wiki page of Link aggregation for great detail. This whole thing is based on LACP (Link aggregation control protocol) for Ethernet which comes under LAG (Link aggregation group) which could combines number of physical ports put together to form a single virtual high reliable, efficient, high bandwidth path for data connectivity. In This post we will see how we could configure Network Bonding in CentOS7/RHEL7.īut before we configure Bonding in Linux, i think we should understand how bonding works, type of network bonding mode in Linux. This way Linux kernel will automatically detect any interface failure and will work accordingly to provide continuous connectivity of application with user end. This is method to provide more reliable network connection that enhance connectivity, like we used RAID or mirroring for Linux Disk. Bonding is method for aggregating multiple network interfaces into a single logical interface on machine which internally combine two or more interface cards to work to fault tolerance in case any NIC get fail,load balancing among member NIC used for Bonding and increase throghput beyond single NIC can sustain. Today we will see how to Bonding in Linux machine.
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