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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
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Chapter 12 Overview of the POS SPAs
Supported Features
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Positive stuffing event (PSE)
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Negative stuffing event (NSE)
SONET/SDH Synchronization Features
• Local (internal) timing (for inter-router connections over dark fiber or Wavelength Division
Multiplex [WDM] equipment)
• Loop (line) timing (for connecting to SONET/SDH equipment)
• +/– 20 ppm clock accuracy over full operating temperature
WAN Protocol Features
• HDLC and Frame Relay IETF encapsulation
• Multiprotocol Label Switching (MPLS)
• RFC 1661, The Point-to-Point Protocol (PPP)
• RFC 1662, PPP in HDLC framing
• RFC 2615, PPP over SONET/SDH (with 1+x43 self-synchronous payload scrambling)
Network Management Features
• Simple Network Management Protocol (SNMP) Management Information Base (MIB) counters
• Local (diagnostic) loopback
• Network loopback
• NetFlow Data Export
• RFC 3592 performance statistics for timed intervals (current, 15-minute, multiple 15-minute, and
1-day intervals):
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Section CV (code violations)
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Section ES (error seconds)
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Section SES (severly errored seconds)
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Near end & Far end Line CV
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Near end & Far end Line ES
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Near end & Far end Line SES
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Near end & Far end Line UAS (unavailable seconds)
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Near end & Far end Path CV
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Near end & Far end Path ES
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Near end & Far end Path SES
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Near end & Far end Path UAS