Method and system for controlling flow based on bandwidth adjusting mechanism

Abstract

The invention relates to communication field, disclose a flow control method based on bandwidth adjustment mechanism, comprising : user data packets arrived at the hostel MSTP equipment from the source MSTP-end equipment; the MSTP equipment detect its own memory state, connect the link bandwidth of source MSTP equipment according to detection results, and send the regulating information to the sources MSTP equipment; the source MSTP equipment adjust its up-run bandwidth according to the above regulating information. The invention also discloses a network, comprising source MSTP equipment and hostel MSTP equipment. The MSTP equipment described comprises: FIFO state detection module, the FIFO receiving memory modules, FIFO sending memory modules, LCAS control modules and LCAS module. The invention transmits the congestion of the users' residential side in network to the source end users, avoid user data information packet loss, and achieve the end-to-end flow control for users.

Description

technical field [0001] The invention relates to the communication field, in particular to a flow control method based on a bandwidth adjustment mechanism and a network system applied to the method. Background technique [0002] As a network connecting the access network and the core layer network, the metropolitan area network has developed rapidly in recent years. Operators hope to provide more service support through the MAN, so as to add value to the network and increase revenue. However, with the increase of access network data services, the huge amount of data brought by the access local area network (LAN) has brought new problems to the metropolitan area network, because Synchronous Digital Hierarchy / Synchronous Optical Network (SDH / SONET) It is a circuit switching technology, not a packet switching method, and it is difficult to effectively handle burst data packets and provide effective bandwidth management. [0003] With the advent of the Next Generation Digital S...

AI Technical Summary

Problems solved by technology

[0011] 1. There is a frame loss situation; the high-level connection-oriented network layer needs to repeatedly retransmit the discarded frames, the bandwidth utilization rate is low, and finally slows down the network response time of the end user;

[0012] 2. Due to network congestion, the bandwidth is constantly adjusted and traffic oscillation occurs

[0026] In addition, the transmission distance is relatively long, and the delay from the sink to the source is relatively large;

[0027] 3. The PAUSE frame is used as in-band control information, which is easily affected by congested traffic.

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