Liunx network: br bridged network configuration

br bridged network configuration

Production typically use

specific configuration

[root@centos_13 network-scripts]# ll ifcfg-*
-rw-r--r--  1 root root 115 Mar 18 14:30 ifcfg-bond0
-rw-r--r--  1 root root 115 Mar 18 14:35 ifcfg-bond1
-rw-r--r--  1 root root 128 Mar 18 14:38 ifcfg-br0
-rw-r--r--  1 root root  91 Mar 18 14:36 ifcfg-br1
-rw-r--r--  1 root root  70 Mar 18 14:28 ifcfg-eth0
-rw-r--r--  1 root root  70 Mar 18 14:28 ifcfg-eth1
-rw-r--r--  1 root root  70 Mar 18 14:34 ifcfg-eth2
-rw-r--r--  1 root root  70 Mar 18 14:34 ifcfg-eth3
-rw-r--r--. 1 root root 254 Mar 29  2019 ifcfg-lo

---

1.eth0

[root@centos_13 network-scripts]# vim ifcfg-eth0
DEFROUTE=yes
DEVICE=eth0
ONBOOT=yes
MASTER=bond0
USERCTL=no
SLAVE=yes

2.eth1

[root@centos_13 network-scripts]# vim ifcfg-eth1
DEFROUTE=yes
DEVICE=eth1
ONBOOT=yes
MASTER=bond0
USERCTL=no
SLAVE=yes

eth0 and eth1 bind to bond0

3.bond0

[root@centos_13 network-scripts]# vim ifcfg-bond0
BOOTPROTO=static
NAME=bond0
DEVICE=bond0
ONBOOT=yes
BONDING_MASTER=yes
BONDING_OPTS="mode=1 miimon=100"
BRIDGE=br0

the MODE : is the bonding patterns, in what, what kind of fill;

模式：
	mode 0 (balance-rr)
		轮转策略：从头到尾顺序的在每一个slave接口上发送数据包，本模式提供负载均衡和容错的能力
	mode 1 (active-backup)
		活动-备份策略：只有一个slave被激活，当活动的slave接口失效时才会激活其他slave，为了避免交换机发生混乱此时绑定的MAC地址只有一个外部端口可见
	mode 3 (broadcast)
		广播策略：在所有slave接口上传送所有数据报，提供容错能力

注意：active-backup、balance-tlb、balance-alb模式不需要交换机的任何特殊配置，其他的绑定模式需要配置交换机以便整合连接，如思科交换机在模式0、2、3中使用etherchanne，但在模式4中需要LACP和etherchannel

miimion : how long is sending a message to each other between multiple network cards, measured at each other is working properly, if damaged, immediately take over the work;

= Br0 BRIDGE : bridged to br0

4.br0

[root@centos_13 network-scripts]# vim ifcfg-br0
TYPE=Bridge
BOOTPROTO=static
NAME=br0
DEVICE=br0
ONBOOT=yes
IPADDR=192.168.0.200
PREFIX=24
GATEWAY=192.168.0.1
DNS1=192.168.0.1

= Bridge the TYPE : Be sure to type, expressed as bridge mode

---

Only the second host configuration substantially identical

1.eth2

[root@centos_13 network-scripts]# vim ifcfg-eth2
DEFROUTE=yes
DEVICE=eth2
ONBOOT=yes
MASTER=bond1
USERCTL=no
SLAVE=yes

2.eth3

[root@centos_13 network-scripts]# vim ifcfg-eth3
DEFROUTE=yes
DEVICE=eth3
ONBOOT=yes
MASTER=bond1
USERCTL=no
SLAVE=yes

3.bond1

[root@centos_13 network-scripts]# vim ifcfg-bond1
BOOTPROTO=static
NAME=bond1
DEVICE=bond1
ONBOOT=yes
BONDING_MASTER=yes
BONDING_OPTS="mode=1 miimon=100"
BRIDGE=br1

4.br1

[root@centos_13 network-scripts]# vim ifcfg-br1
TYPE=Bridge
BOOTPROTO=static
NAME=br1
DEVICE=br1
ONBOOT=yes
IPADDR=192.168.40.13
PREFIX=24