Cisco OC-3/STM-1 Packet-over-SONET/SDH Line Card for Cisco 12000 Series Routers
The Cisco OC-3/STM-1 Packet-over-SONET/SDH Line Card is a high-capacity, high-performance interface that is ideal for edge feature support and customer access applications.
Cisco OC-3/STM-1 Packet-over-SONET/SDH Line Card for Cisco 12000 Series Routers
The Cisco OC-3/STM-1 Packet-over-SONET/SDH Line Card is a high-capacity, high-performance interface that is ideal for edge feature support and customer access applications. The four-port OC-3/STM-1 card may be ordered with multimode, single mode intermediate reach, and single mode long reach optics enabling customers to connect directly to fiber or traditional SONET/SDH solutions.
Feature Summary
Packet Layer Support
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Multiple virtual output queues, eliminating head-of-line blocking
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512-KB burst buffers, which smooth out the arriving packet bursts
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64 MB/64 MB packet buffer memory for Transmission Control Protocol (TCP) goodput
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Configurable with up to 256 MB of code and route table memory
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A Cisco Express Forwarding (CEF) table that can accommodate up to one million forwarding entries
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Application-specific integrated circuit (ASIC)-based queuing
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Class of service (CoS) support
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IP-based congestion management
SONET/SDH Layer
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Standards compliant SONET/SDH interface
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Alarm processing
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Loss of Signal (LOS), Loss of Frame (LOF), Line Alarm Indicator Signal (LAIS), Path Alarm Indicator Signal (PAIS), Loss of Pointer (LOP), Line Remote Defect Indicator (LRDI), Path Remote Defect Indicator (PRDI), Signal Failure (SF), Signal Degrade (SD), Line Remote Error Indicator (Line FEBE), Path Remote Error Indicator (Path FEBE)
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Performance monitoring
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Error counts for B1, B2, B3
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Threshold Crossing Alerts (TCA) for B1, B2, B3 with settable threshold
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Synchronization
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Local (internal) or loop timed (recovered from network)
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20 ppm clock accuracy
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Pointer activity monitoring
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Protection switching
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Support both SONET APS and SDH MSP protocols
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Local (Diagnostic) and line (Network) loopback
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Payload mapping
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IETF RFC 1619 Point-to-Point Protocol (PPP) over SONET/SDH
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ATM 1 + X43 self synchronous scrambler