The networking segment includes multiservice edge switches, edge aggregation routers, Internet protocol (IP) service routers, multiservice core switches, and IP core routers.
Typical Router Cards
The basic system architecture for an edge router is shown in Figure 1. Today’s router architectures use highly optimized network processing engines that enable the data flow of packets to proceed unimpeded along a fast path, while management functions such as route table updates are handled separately across a control plane. Line-card processing has evolved to deliver faster forwarding with deeper packet inspection. As networking requirements continue to be driven by higher wire speeds (to 100G and beyond) and more complex services driven by application-aware processing and cloud applications, new hardware is needed to accelerate these functions and keep up with customer demands.