RFC 2544 Latency Testing on Cisco ASR 1000 Series Aggregation Services Routers

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Executive Summary

This whitepaper examines and analyses traffic latency on the Cisco ASR 1000 Series Routers. The Cisco ASR 1000 has three forwarding engines known as Cisco ASR 1000 Series Embedded Services Processors (ESPs). This paper will review the latency of two of those ESP forwarding engines, specifically the 10-Gbps Cisco ASR 1000 Series ESP (ASR1000-ESP10) and 20-Gbps Cisco ASR 1000 Series ESP (ASR1000-ESP20) forwarding engines. The goal of this whitepaper is to highlight how different forwarding rates impact the latency of the Cisco ASR 1000. This paper highlights some of the choices that one must make while designing network. This paper covers the impact on overall latency relating to queuing, shaping and QoS which can impact the overall performance of network.

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