Title: VPN Gateways over Network Processors: Implementation and Evaluation
Authors: Lin, Yi-Neng
Lin, Ying-Dar
Lai, Yuan-Cheng
Lin, Chuan-Hung
Department of Computer Science
Keywords: VPN;Gateway;Network Processor;Bottleneck;Implementation
Issue Date: 1-Jul-2010
Abstract: Networking applications, such as VPN and content filtering, demand extra computing power in order to meet the throughput requirement nowadays. In addition to pure ASIC solutions, network processor architecture is emerging as an alternative to scale up data-plane processing while retaining design flexibility. This article, rather than proposing new algorithms, illustrates the experience in developing IPSec-based VPN gateways over network processors, and investigates the performance issues. The external benchmarks reveal that the system can reach 45Mbps for IPSec using 3DES algorithm, which improves by 350% compared to single XScale core processor and parallels the throughput of a PIII 1GHz processor. Through the internal benchmarks, we analyze the turnaround times of the main functional blocks, and identify the core processor as the performance bottleneck for both packet forwarding and IPSec processing.
URI: http://hdl.handle.net/11536/5232
ISSN: 1607-9264
Volume: 11
Issue: 4
Begin Page: 457
End Page: 463
Appears in Collections:Articles