Linux notes 3-2. Advanced network Configuration

2. Advanced network Configuration ***********
Goal:
Configure Network bridging
configuring The Bond network interface
configuring the Team network interface

# #1. Configuring Network Bridging # #
The Network Bridge uses the Network Bridge realizes the shared Internet host and the client computer in addition to use the software , but also can use the system to bring the network Bridge to establish the connection uses the dual network card the machine to make the host

Real-machine configuration

Vim/etc/sysconfig/network-scripts/ifcfg-westos

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Vim/etc/sysconfig/network-scripts/ifcfg-br0

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just turn it off . NetworkManager service, and then restart the network

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Virtual machine configuration

Systemctl Stop NetworkManager
Add to
Brctl ADDBR Adding a network bridge

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Configure the Network bridge IP, subnet mask

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Brctl Show display

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Brctl addif Add a bridge connection

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Delete
Brctl Delif Delete a bridge connection

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Brctl DELBR Delete a network bridge

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# #2. Bond Network # # //support only two NICs

Red Hat Enterprise Linux allows administrators to bind multiple network interfaces to one channel using the bonding kernel module and a special network interface called the channel binding interface. Depending on the binding mode chosen, channel binding makes two or more network interfaces as a network interface, increasing bandwidth and providing redundancy

binding Mode

Mode 0 (Balanced round)-round-robin strategy, all interfaces use round robin to transmit packets in all Slave; Any slave can receive
Mode 1 (active backup)-fault tolerance. Only one slave interface can be used at a time, but if the interface fails, the other slave will replace it
Mode 3 (broadcast)-fault tolerance. All packets are broadcast through all slave interfaces

Manage with nmcli

establishing a binding interface Bond0

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Establish Slave interface eth0 and eth1

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View Bonding status

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# #3. Team Network # #

Team and bond functions are similar
Team does not need to manually load the appropriate kernel modules
Team is more scalable and supports 8 NICs

Types of Team
Broadcast broadcast fault tolerance
Roundrobin Polling
Activebackup Master Preparation
LoadBalance Load Balancing

Manage Team with NMCLI

establishing a binding interface TEAM0

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Establish Slave interface eth0 and eth1

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View Team status Teamctl team0 stat

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Linux notes 3-2. Advanced network Configuration