Cisco Cisco ASR 1000 Series 40Gbps SPA Interface Processor 数据表
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Data Sheet
Cisco 1-Port Channelized OC-12/STM-4 Shared
Port Adapter
Port Adapter
The Cisco
®
I-Flex design combines shared port adapters (SPAs) and SPA interface
processors (SIPs) using an extensible design that enables service prioritization for
voice, video, and data services. Enterprise and service provider customers can use the
improved slot economics resulting from modular port adapters that are interchangeable
across Cisco routing platforms. The I-Flex design maximizes connectivity options and
offers superior service intelligence through programmable interface processors that
deliver line-rate performance. I-Flex enhances speed-to-service revenue and provides a
rich set of quality-of-service (QoS) features for premium service delivery while
effectively reducing the overall cost of ownership. This data sheet contains the
specifications for the Cisco 1-Port Channelized OC12/STM-4 SPA (refer to Figure 1).
voice, video, and data services. Enterprise and service provider customers can use the
improved slot economics resulting from modular port adapters that are interchangeable
across Cisco routing platforms. The I-Flex design maximizes connectivity options and
offers superior service intelligence through programmable interface processors that
deliver line-rate performance. I-Flex enhances speed-to-service revenue and provides a
rich set of quality-of-service (QoS) features for premium service delivery while
effectively reducing the overall cost of ownership. This data sheet contains the
specifications for the Cisco 1-Port Channelized OC12/STM-4 SPA (refer to Figure 1).
Figure 1. Cisco 1-Port Channelized OC-12/STM-4 Shared Port Adapter
Product Overview
The Cisco 1-Port Channelized OC-12/STM-4 SPA is available on high-end Cisco routing platforms offering the
benefits of network scalability with lower initial costs and ease of upgrades. The Cisco SPA/SIP portfolio continues
the Cisco focus on investment protection along with consistent feature support, broad interface availability, and the
latest technology. The Cisco SPA/SIP portfolio allows different interfaces (Packet over SONET/SDH [POS], ATM,
Ethernet, etc.) to be deployed on the same interface processor.
Applications
Internet traffic continues to grow at an explosive rate – with the number of users doubling each year. This
unsurpassed growth is increasing the demand for higher-capacity interfaces from OC-3/STM-1 to OC-48/STM-16.
In addition, POS enables efficient transport of IP traffic and uses SONET/SDH concatenated payloads (that is,
STS-3c/VC-4, STS-12c/VC-4-4c, or STS-48c/VC-4-16c) to achieve a higher order of statistical multiplexing. At
present, concatenated services at VC-4 rates are available only in some parts of the world (for example, Europe),
with higher rates not yet readily available. The new Channelized OC-12/STM-4 SPA provides customers in these
areas with an STM-4 POS interface that can be provisioned through the traditional network. The Channelized
OC12/STM-4 SPA builds on the SONET/SDH channelization capability.