Divide and Conquer: PC-Based Packet Trace Replay at OC-48 Speeds

Today’s Internet backbone networking devices need to be tested under realistic traffic conditions at transmission rates of OC-48 and above. While commercially available synthetic traffic generators are capable of keeping up with high transmission rates, they fail to produce realistic mixes of flow, packet and address arrival patterns. We explore the alternative of replaying real packet traces from high-speed links using multiple commodity PCs equipped with lowerspeed network interfaces. Such an approach is inherently cost-effective because of the use of commodity hardware, and can scale up to any desired transmission rate. We first examine how to split a trace among multiple PCs for the purpose of replaying, and validate our technique using simulations. We use a wavelet ’spectrum’ or energy plot for this purpose which enables traffic processes to be viewed simultaneously on many time-scales. Then we present an implementation using Linux PCs with gigabit Ethernet interfaces ...

• Type: Conference
• Year: 2005
• Where: TRIDENTCOM
• Authors: Tao Ye, Darryl Veitch, Gianluca Iannaccone, Supratik Bhattacharyya
• Keywords: Multiple Commodity Pcs, Packet Traces, Transmission Rate, TRIDENTCOM 2005