Challenges Of Deploying 10-Gigabit Ethernet

Safari, Aurora
April 2005
Business Communications Review;Apr2005, Vol. 35 Issue 4, p57
Trade Publication
This article presents information regarding the deployment of 10-Gigabit Ethernet (10GE). The second generation of 1OGE products has arrived, with substantial packet-processing capabilities that enable additional services. Key functions include packet classification, header modification, policing of flows and queuing/scheduling, all handled at wire-speed rates. Packet classification is one of the most susceptible stress points. Classification maps information from the packet header to information stored in local tables maintained by a control plane processor. In addition to complex packet classification, flow classification might be required to provide enhanced services and policies. Flow classification provides a level of granularity that allows policies to be established based on the applications. Any number of combinations of Layer 3 and Layer 4 information could be used to define the QOS or security policies that are then enforced. Depending on the packet arrival rate and number of required look ups per packet, the packet processor or the classification device could become a resource bottleneck.


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