Cisco 15454-TCC - Network Processor Card Uživatelský manuál stáhnout pdf (Strana 5)

priority marking. These flexible features allow the service provider to build, control, and guarantee the delivery of the SLAs offered for

each service type. To help service provider technicians manage and use the network, the Cisco ML-Series cards integrate Cisco IOS

Software, the industry’s best-known Layer 2 and Layer 3 technology, reducing training time and cost.

Figure 4. Metro Data Services Network TLS

Cable Television Data Transport

Cable television operators are experiencing rapid growth of subscribers to their data services. The Cisco ONS 15454 with Cisco ML-Series

cards provides a solution to efficiently transport the increasing data on cable television networks. The Cisco solution allows the cable

operator to aggregate data traffic, using the Cisco ML-Series cards, from multiple secondary headends and statistically multiplex it onto

shared transport bandwidth for handoff to a core router at the master headend (Figure 5). Cable modem traffic is bursty, and the sharing of

bandwidth allows better use of optical transport resources compared to dedicated point-to-point connections. The advanced QoS

capabilities of the Cisco ML-Series cards allow the cable network engineer to design the network to support the committed information rate

(CIR) necessary for the types of services being offered, such as Web browsing, VoIP, and video on demand (VoD). The Cisco ML-Series

cards allow the user to build traffic queues and associate priority and bandwidth with each queue type, allowing the transport demands of

each service to be met. The Cisco ONS 15454 platform supports in-service bandwidth upgrades and allows the transport network to scale

from 155 Mbps to 320 Gbps using dense wavelength-division multiplexing (DWDM) so that growth demands should be easily met.

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Cisco 15454-TCC - Network Processor Card Uživatelský manuál Strana 5