配置网卡混杂模式linux,linux 网卡的混杂模式的取消

最新推荐文章于 2025-07-22 21:39:43 发布

转载最新推荐文章于 2025-07-22 21:39:43 发布 · 711 阅读

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本文详细介绍了Linux下网卡的工作模式，包括广播、组播、直接和混杂模式，并提供了如何在Linux系统中查看、添加及取消网卡混杂模式的具体操作步骤。

1、Linux下网卡常用的几种模式说明：广播方式：该模式下的网卡能够接收网络中的广播信息。组播方式：设置在该模式下的网卡能够接收组播数据。直接方式：在这种模式下，只有目的网卡才能接收该数据。混杂模式：在这种模式下的网卡能够接收一切通过它的数据，而不管该数据是否

2、查看、添加和取消混杂模式 a、查看网卡模式 [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网卡的混杂模式 [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网卡的混杂模式 [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

实际案例问题？-------------------------------------------------- 容器上不了网，容器ping不通网关宿主机上有bond0 网卡将真实网卡设置成混杂模式 ifconfig bond0 promisc ifconfig br0 promisc ifconfig enp2s0f0 promisc ifconfig enp2s0f1 promisc 稍等2分钟，就可以拼通网关永久生效：追加到/etc/profile

# add promisc

for i in `ifconfig|egrep "^en|^b"|awk -F ":" '{print $1}'`

ifconfig $i promisc

ifconfig $i

done