Datasheet

Data Sheet

Cable Television Data Transport

Cable television operators are experiencing rapid growth of subscribers to their data services. The

Cisco ONS 15454 with ML-MR-10 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-MR-10 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-MR-10 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-MR-10 cards allow the

user to build traffic queues and associate priority and bandwidth with each queue type, to meet the

transport demands of each service. 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), thereby easily accommodating growth.

Figure 6. Cable Television Data Networking

The Cisco Advantage

The Cisco ONS 15454 MSPP solution offers significant advantages over traditional optical network

elements combined with external Layer 2 and Layer 3 devices. These advantages are summarized

as follows.

Integrated Multiservice Capabilities

The Cisco ONS 15454 MSPP solution supports traditional TDM-based, private-line services (for

example, DS-1/E1, DS-3/E3, and OC-n/STM-n) along with advanced Ethernet-based services,

simplifying service provider migration to new data tariffs and interface flexibility for enterprise

users.