1、Linux下網卡常用的幾種模式說明：

廣播方式：該模式下的網卡能夠接收網絡中的廣播信息。

組播方式：設置在該模式下的網卡能夠接收組播數據。

直接方式：在這種模式下，只有目的網卡才能接收該數據。

混雜模式：在這種模式下的網卡能夠接收一切通過它的數據，而不管該數據是否

2、查看、添加和取消混雜模式

a、查看網卡模式

[root@zabbix?~]#?ifconfig?-a

ens32:?flags=4163??mtu?1500

inet?10.203.12.88??netmask?255.255.255.0??broadcast?10.203.12.255

inet6?fe80::250:56ff:feb3:2253??prefixlen?64??scopeid?0x20

ether?00:50:56:b3:22:53??txqueuelen?1000??(Ethernet)

RX?packets?2800921171??bytes?2087772292594?(1.8?TiB)

RX?errors?0??dropped?61583??overruns?0??frame?0

TX?packets?2328391024??bytes?1651122431491?(1.5?TiB)

TX?errors?0??dropped?0?overruns?0??carrier?0??collisions?0

lo:?flags=73??mtu?65536

inet?127.0.0.1??netmask?255.0.0.0

inet6?::1??prefixlen?128??scopeid?0x10

loop??txqueuelen?0??(Local?Loopback)

RX?packets?287928092??bytes?25694088025?(23.9?GiB)

RX?errors?0??dropped?0??overruns?0??frame?0

TX?packets?287928092??bytes?25694088025?(23.9?GiB)

TX?errors?0??dropped?0?overruns?0??carrier?0??collisions?0

b、添加ens32網卡的混雜模式

[root@zabbix?~]#?ifconfig?ens32?promisc

[root@zabbix?~]#?ifconfig?-a

ens32:?flags=4419??mtu?1500

inet?10.203.12.88??netmask?255.255.255.0??broadcast?10.203.12.255

inet6?fe80::250:56ff:feb3:2253??prefixlen?64??scopeid?0x20

ether?00:50:56:b3:22:53??txqueuelen?1000??(Ethernet)

RX?packets?2800927421??bytes?2087779226027?(1.8?TiB)

RX?errors?0??dropped?61585??overruns?0??frame?0

TX?packets?2328394266??bytes?1651123460792?(1.5?TiB)

TX?errors?0??dropped?0?overruns?0??carrier?0??collisions?0

lo:?flags=73??mtu?65536

inet?127.0.0.1??netmask?255.0.0.0

inet6?::1??prefixlen?128??scopeid?0x10

loop??txqueuelen?0??(Local?Loopback)

RX?packets?287929365??bytes?25694221536?(23.9?GiB)

RX?errors?0??dropped?0??overruns?0??frame?0

TX?packets?287929365??bytes?25694221536?(23.9?GiB)

TX?errors?0??dropped?0?overruns?0??carrier?0??collisions?0

c、除去ens32網卡的混雜模式

[root@zabbix?~]#?ifconfig?ens32?-promisc

[root@zabbix?~]#?ifconfig?-a

ens32:?flags=4163??mtu?1500

inet?10.203.12.88??netmask?255.255.255.0??broadcast?10.203.12.255

inet6?fe80::250:56ff:feb3:2253??prefixlen?64??scopeid?0x20

ether?00:50:56:b3:22:53??txqueuelen?1000??(Ethernet)

RX?packets?2800929338??bytes?2087779370583?(1.8?TiB)

RX?errors?0??dropped?61607??overruns?0??frame?0

TX?packets?2328396280??bytes?1651123608090?(1.5?TiB)

TX?errors?0??dropped?0?overruns?0??carrier?0??collisions?0

lo:?flags=73??mtu?65536

inet?127.0.0.1??netmask?255.0.0.0

inet6?::1??prefixlen?128??scopeid?0x10

loop??txqueuelen?0??(Local?Loopback)

RX?packets?287931015??bytes?25694392926?(23.9?GiB)

RX?errors?0??dropped?0??overruns?0??frame?0

TX?packets?287931015??bytes?25694392926?(23.9?GiB)

TX?errors?0??dropped?0?overruns?0??carrier?0??collisions?0

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