linux中链路聚合配置

linux中链路聚合配置

链路聚合可以提高带宽。

环境：一台服务器，加两个网络适配器

1、添加网络适配器

在vm中，找到【虚拟机】—> 【设置】—>【添加】—>选择【网络适配器】—>【完成】，如下图：
2、查看网卡添加情况

[[e-mail] ~]# ip a |grep ens
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    inet 192.168.184.137/24 brd 192.168.184.255 scope global dynamic ens33
3: ens37: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    inet 192.168.184.163/24 brd 192.168.184.255 scope global dynamic ens37
[[e-mail] ~]# ethtool ens33        ###查看协商速率
Settings for ens33:
	Supported ports: [ TP ]
	Supported link modes:   10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	                        1000baseT/Full 
	Supported pause frame use: No
	Supports auto-negotiation: Yes
	Advertised link modes:  10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	                        1000baseT/Full 
	Advertised pause frame use: No
	Advertised auto-negotiation: Yes
	Speed: 1000Mb/s                      ###协商速率为1000MB/s
	Duplex: Full
	Port: Twisted Pair
	PHYAD: 0
	Transceiver: internal
	Auto-negotiation: on
	MDI-X: off (auto)
	Supports Wake-on: d
	Wake-on: d
	Current message level: 0x00000007 (7)
			       drv probe link
	Link detected: yes

可以查看到新添加的一块网络适配器ens37（在此处有可能添加的是ens38）

3、配置网卡

（1）创建ifcfg-bond0并修改配置文件

[[e-mail] network-scripts]# vim ifcfg-bond0
DEVICE=bond0
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=none
IPADDR=192.168.184.110
NETMASK=255.255.255.0
IPV6INIT=no
USERCTL=no

（2）修改ifcfg-ens33配置文件

[[e-mail] network-scripts]# vim ifcfg-ens33 
DEVICE=ens33
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=none
IPV6INIT=no
USERCTL=no
MASTER=bond0
SLAVE=yes

（3）创建ifcfg-ens37并修改配置文件

[[e-mail] network-scripts]# vim ifcfg-ens37
DEVICE=ens37
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=none
IPV6INIT=no
USERCTL=no
MASTER=bond0
SLAVE=yes

4、创建 /etc/modprobe.d/bond0.conf 文件（或者用tail -2查看配置文件）

[[e-mail] network-scripts]# vim /etc/modprobe.d/bond0.conf
alias bond0 bonding
options bonding mode=0 miimon=100

5、重启网卡

[[e-mail] network-scripts]# systemctl restart network

重启网卡后，当前连接会断开，再重新打开一个窗口，使用地址192.168.184.110连接。

6、测试 ---- 192.168.184.110

使用ethtool bond0查看配置信息，也可以查看ip地址。

[[e-mail] ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 state UP qlen 1000
    link/ether 00:0c:29:a9:ca:a2 brd ff:ff:ff:ff:ff:ff
3: ens37: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master bond0 state UP qlen 1000
    link/ether 00:0c:29:a9:ca:a2 brd ff:ff:ff:ff:ff:ff
4: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP qlen 1000
    link/ether 00:0c:29:a9:ca:a2 brd ff:ff:ff:ff:ff:ff
    inet 192.168.184.110/24 brd 192.168.184.255 scope global bond0
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fea9:caa2/64 scope link tentative dadfailed 
       valid_lft forever preferred_lft forever

[[e-mail] ~]# ethtool bond0
Settings for bond0:
	Supported ports: [ ]
	Supported link modes:   Not reported
	Supported pause frame use: No
	Supports auto-negotiation: No
	Advertised link modes:  Not reported
	Advertised pause frame use: No
	Advertised auto-negotiation: No
	Speed: 2000Mb/s                       ###提升了协商速率，协商速率为2000MB/s
	Duplex: Full
	Port: Other
	PHYAD: 0
	Transceiver: internal
	Auto-negotiation: off
	Link detected: yes
                    ###提升了协商速率，协商速率为2000MB/s
	Duplex: Full
	Port: Other
	PHYAD: 0
	Transceiver: internal
	Auto-negotiation: off
	Link detected: yes