Communication between different network portal

CodePudding user response:

Responsible for the export of data forwarding, general is three layer forward

CodePudding user response:

Can be understood as the door of the house, in and out from the door,

CodePudding user response:

Can be understood as a delivery site,

CodePudding user response:

Asked the analogy to the inside of the factions to lead to, anywhere can only be transmitted through the task

CodePudding user response:

Each in and out of the door,