Typically, permanent virtual circuits are set up between multiple backbone switches and between switches and devices with heavy network traffic.

一般而言，永久性虚拟电路建在多个主干网交换机之间和交换机与网络信息流量大的设备之间。

youdao

Typically, permanent virtual circuits are set up between multiple backbone switches and between switches and devices with heavy network traffic.

一般而言，永久性虚拟电路建在多个主干网交换机之间和交换机与网络信息流量大的设备之间。

youdao