我们想在 CISCO WS-C2960X-24PS-L 交换机上启用 9K 巨型帧，但是我在文档中发现了这一行，这让我感到困惑和担忧，因为除了全局设置之外，它还涉及重置和重新加载交换机。
是否有可能为某些接口设置它而不必重新启动交换机或影响其他端口的 MTU？除非绝对必要，否则无法承受停机时间。我们将其视为对 Oracle RAC 专用互连端口通信的改进。我们不想接触这些交换机上的许多其他服务器。
该段的其余部分：
When you use this command to change the system MTU or jumbo MTU size, you must reset the switch before
the new configuration takes effect. The system MTU setting is saved in the switch environmental variable in
NVRAM and becomes effective when the switch reloads. The MTU settings you enter with the system mtu
and system mtu jumbo commands are not saved in the switch IOS configuration file, even if you enter the
copy running-config startup-config privileged EXEC command. Therefore, if you use TFTP to configure
a new switch by using a backup configuration file and want the system MTU to be other than the default, you
must explicitly configure the system mtu and system mtu jumbo settings on the new switch and then reload
the switch.
Gigabit Ethernet ports operating at 1000 Mb/s are not affected by the system mtucommand, and 10/100-Mb/s
ports are not affected by thesystem mtu jumbo command.