Cisco Cisco ASR 1000 Series 40Gbps SPA Interface Processor Scheda Tecnica
Data Sheet
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also be deployed as customer premises equipment (CPE) to provide the data component to the
service provider networks.
The ATM service allows service providers to effectively manage the bandwidth at the edges of the
network while implementing value-added Layer 3 services. Advanced traffic management features
(such as per-VC and per-VP traffic shaping) can also be used to help ensure that traffic from one
customer does not affect traffic from another.
With advanced traffic shaping features and support for many ATM service classes, the SPA can be
widely deployed in many parts of the service provider network. (See Figure 3.)
Figure 3. Sample Scenario Illustrating Transport ATM Traffic with ATM PWE over MPLS Network
Features at a Glance
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1-port Channelized OC3/STM-1port per SPA
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Jitter and wander compliant to ITU G.823/824 traffic interface
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Compliant to IETF draft-ietf-pwe3-cesopsn-07.txt: Circuit Emulation Service over Packet
Switched Network (CESoPSN)
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Compliant to IETF RFC 4553: Structure-Agnostic TDM over Packet (SAToP)
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Bit-transparent data transport
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Protocol-independent data transport
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Supports CEoP PWE (CESoPSN and SAToP) transport using Real-Time Transport
Protocol (RTP)
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QoS using MPLS EXP
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Configurable payload size
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Synchronous, differential, and adaptive clock recovery schemes, with clock accuracy target
of 15ppb
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Configurable jitter buffer up to 320 milliseconds
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Configurable idle pattern
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Support for ATM traffic classes: UBR, UBR+, VBR-nrt, VBR-rt, CBR
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Support for ATM QoS: VC and VP shaping
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Support for ATM IMA
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Support for ATM PWE (VC and VP mode cell relay)
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Support for ATM UNI (3.0, 3.1)
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Online insertion and removal (OIR) supported on Cisco 7600 platforms
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Overall SPA status LEDs
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Per-port status LEDs