Q: What's the difference between upstream and downstream?

Today, look at the information, the box equipment business boards Branch line boards and interface boards, respectively, used to connect the uplink and downlink devices, this uplink and downlink How to distinguish, such as monitoring network, the core under the - convergence - access - IPC, and then the core under the - storage servers, streaming media servers, etc., this uplink and downlink how to distinguish?

A:

Generally upstream and downstream refers to the direction of the traffic, from the point of view of the device, the traffic sent to the upper device is called upstream, and the traffic sent to the downlink device is called downstream, which can also be referred to as north-south direction traffic.

Upstream and downstream are distinguished mainly on the basis of the direction of data transmission.

Upstream: when the terminal transmits data to the target server is called uplink, the traffic at this time is uplink traffic or northbound traffic.

Downstream: When the target server transmits data to the source terminal the process is called downstream, and the traffic at this time is called downstream traffic or southbound traffic.