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This article mainly explains "how to understand the bond mode principle of Linux network card aggregation linux multi-network card binding aggregation". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Next let the editor to take you to learn "how to understand Linux Nic aggregation linux multi-Nic binding aggregation bond mode principle"!

Binding multiple Linux network ports into one can improve the performance of the network. For example, for backup servers, several terabytes of data need to be backed up in one night. If a single gigabit network port is used, it will be a serious bottleneck. Other applications, such as ftp servers and high-load download sites, have similar problems. Therefore, using Linux teaming or bond to bind multiple network cards as a logical network port and configuring a single IP address will greatly increase the network throughput of the server.

Linux's multi-Nic binding function uses the "bonding" module in the kernel. You can refer to the Linux Ethernet Bonding Driver documentation for this module, but this module has been included in all Linux versions of the kernel released so far, and in most cases there is no need to recompile the kernel. The bonding driver of Linux provides the function of binding / integrating (bond) multiple network cards into a virtual logical network port. Please note that the bound bonded has a variety of working modes; generally speaking, it is divided into hot backup (hot standby) and load balancing (load balancing). It is relatively easy to configure in Redhat/Fedora and other types of Redhat Linux.

1. Create a bond0 profile

Vi / etc/sysconfig/network-scripts/ifcfg-bond0

DEVICE=bond0-physical device name

IPADDR=192.168.1.2-- IP address

NETMASK=255.255.255.0-Subnet mask

GATEWAY=192.168.1.1-Gateway

DNS=8.8.8.8-DNS

ONBOOT=yes-Random start

NAME=bond0

BOOTPROTO=none

USERCTL=no-whether to allow non-root users to control the device

two。 Modify the configuration files of the bound eth0 and eth2

Vi / etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE= "eth0"

USERCTL=no

ONBOOT=yes

MASTER=bond0

SLAVE=yes

BOOTPROTO=none

HWADDR=00:15:17:CC:FC:35

The configuration file for eth2 is the same, except that the value of device is changed to eth2.

3. Installed in bond module driver

Edit the / etc/modprobe.conf or / etc/modules.conf file and add the following to load the bonding module driver when the system starts

Alias bond0 bonding

Option bond0 miimon=100 mode=1

Description:

1). Miimon=100 is used for link monitoring. That is, link status is monitored once per 100ms. Bonding only monitors the link between the host and the switch. If there is a problem with the link out of the switch and there is no problem itself, then bonding thinks that the link is fine and continues to use it.

2). Mode=1 means to provide redundancy. In addition, it can also be 0,2,3, a total of four modes. 0 indicates load balancing

4. Add the following statement to the / etc/rc.d/rc.local file to enable the system to start running automatically

Ifenslave bond0 eth0 eth2

Route add-net 192.168.1.254 netmask 255.255.255.0 bond0 # add this route if necessary

5. Detect and verify configuration

First execute the command to load the bonding module: modprobe bonding

Restart the network service and confirm that bond0 starts correctly: service network restart

Verify that the device is loaded correctly: less / proc/net/bonding/bond0

List all network ports: ifconfig

At this point, I believe you have a deeper understanding of "how to understand the bond mode principle of Linux Nic aggregation linux multi-Nic binding aggregation". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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