@[toc]ifup 开启网卡-激活网络接口ifup命令用于激活指定的网络接口。ifup命令会去读取/etc/sysconfig/network-scripts/目录下的相关网络接口的配置文件，并根据配置文件的内容来激活该网络接口。注意：网络接口名称必须是/etc/sysconfig/network-scripts/目录配置文件中设置的才可以。如果使用ifconfig命令改变了网络接口后，ifu....

文章 2022-02-16 来自：开发者社区

手动为网络接口设置 MTU 大小

http://support.microsoft.com/kb/900926 手动为网络接口设置 MTU 大小如果手动为某个网络接口设置 MTU 大小，则该设置会覆盖此网络接口的默认 MTU。MTU 大小是可以在底层网络上传输的最大数据包大小（以字节为单位）。此方法影响发送到所有目标的数据包，并且可能会对性能造成显著影响，这取决于设置的 MTU 大小。要为网络接口设置 MTU 大小，请按照....

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