Buffer control system

Abstract

Abstract PURPOSE:To make preferential processing of a preliminary selection packet from the packet having the largest buffer using amount possible so as to make a packet arriving at a buffer not easily discarded even when the capacity of the buffer is not increased by incorporating the using status of the buffer in preliminary selection packet information. CONSTITUTION:A switch 26 which is a self-routing multi-stage switching network is provided with packet buffers 220-227 and input ports 100-107 are respectively connected to the input side of the switch 26. A preliminary selection and main selection networks 24 and 25 are connected in parallel to the output side of the switch 26. Output ports 130-137 are connected to the output side of the network 25. The packet buffer 220 is constituted of a buffer controlling section 201, buffer 202, buffer using amount detection circuit 203, and preliminary selection packet assemble circuit 204 and outputs packets to be inputted to the switch 26 after tentatively accumulating the packets and giving buffer using amount indicating bits to the packets. Upon inputting the packets, the network 26 preferentially processes the packets having larger buffer using amounts so as to prevent the packets from being discarded at an input buffer.

Inventors

• 👤 Hiroyuki Sakamoto
• 👤 坂元　宏行
• 👤 Tatsuya Masaki
• 👤 正木　達也
• 👤 Kentaro Hayashi
• 👤 健太郎 林
• 👤 Yoshikatsu Uetake
• 👤 植竹　芳勝

Bibliographic Details