A selective attenuation feedback mechanism for rate oscillation avoidance

✍ Scribed by N. Li; S. Park; S. Li

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 507 KB
• Volume: 24
• Category: Article
• ISSN: 0140-3664
• DOI: 10.1016/s0140-3664(00)00287-5

✦ Synopsis

We have studied the delay-related rate oscillation within Diffserv. The rate oscillation can come from large round trip latency. Enforcing low feedback overhead can also cause the rate oscillation. The Selective Attenuation Feedback via Estimation (SAFE) is proposed to reduce the oscillation while maintaining fast response to network dynamics. SAFE has no per-¯ow accounting. Furthermore, the hashing technique is adopted to keep the operating overhead of SAFE to its minimum. System analysis supports the effectiveness of SAFE. Simulation result also shows that SAFE signi®cantly reduces rate oscillation, therefore achieves high link utilization and small queue size while maintaining very low control overhead.