An on-demand queue management architecture for a programmable traffic manager

  • Authors:
  • Qi Zhang;Roger Woods;Alan Marshall

  • Affiliations:
  • ECIT, Queen's University Belfast, Belfast, UK;ECIT, Queen's University Belfast, Belfast, UK;ECIT, Queen's University Belfast, Belfast, UK

  • Venue:
  • IEEE Transactions on Very Large Scale Integration (VLSI) Systems
  • Year:
  • 2012

Quantified Score

Hi-index 0.00

Visualization

Abstract

A queue manager (QM) is a core traffic management (TM) function used to provide per-flow queuing in access and metro networks; however current designs have limited scalability. An on-demand QM (OD-QM) which is part of a new modular field-programmable gate-array (FPGA)-based TM is presented that dynamically maps active flows to the available physical resources; its scalability is derived from exploiting the observation that there are only a few hundred active flows in a high speed network. Simulations with real traffic show that it is a scalable, cost-effective approach that enhances per-flow queuing performance, thereby allowing per-flow QM without the need for extra external memory at speeds up to 10 Gbps. It utilizes 2.3%-16.3% of a Xilinx XC5VSX50t FPGA and works at 111 MHz.