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The evolution from circuit-switched technologies such as ATM, TDM and frame relay, to packet-switched technology such as Carrier Ethernet means less cost for carriers in terms of devices, and convergence in both the network layers in the core and fixed and mobile access networks at the edge. However, it also heralds a significant rise in the number of technologies and devices they must support, as well as increasing the number of potential network failure points and performance bottlenecks. With both fixed and wireless customers demanding a full range of multimedia services free from network outages or service degradation, carriers require new levels of scalability and end-to-end performance visibility if they are to deliver consistently on service level agreement (SLA) commitments and protect their brand. |
