Cisco 15454-TCC - Network Processor Card Manual do Utilizador descarregar pdf (Página 4)

Figure 2. Ethernet Service Delivery

Interoffice Facility Networks

All traditional local exchange carriers (LEC) have used SONET/SDH technology to interconnect their central offices. With the explosion

of data-related services and the growth of termination equipment with integrated Ethernet interfaces and protocols, these carriers

increasingly need to transport data traffic more efficiently. Using the Cisco ML-Series cards to interconnect data traffic between the remote

terminal equipment and the central core router provides transport bandwidth efficiency by statistically multiplexing and aggregating traffic

for efficient router port use, reducing the quantity of core router interfaces. Management benefits are garnered through the integration of

data switching into the optical platform, reducing the number of data-communication-network (DCN) ports. Figure 3 shows an interoffice

facility (IOF) transport network.

Figure 3. IOF Transport Network

Metro Data Services Network

Metropolitan networks deliver services to end-user customers. A metropolitan network that supports a wide range of service capabilities

allows the service provider to offer a tariff mix to meet customer needs. The Cisco ONS 15454 provides the foundation for building an

advanced multiservice network over an extremely reliable SONET/SDH infrastructure (refer to Figure 4). Data services delivery, such as

transparent LAN services (TLS) or Internet access, are supported by the Cisco ONS 15454 ML-Series cards through the use of 802.1Q in

the .1Q VLAN protocol, VLAN translation, input rate limiting, and advanced QoS features, including queue bandwidth control and traffic

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