Cisco Systems 1000 Series Manual De Usuario
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Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide
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Chapter 12 IEEE 1588v2 PTP Support
Information About IEEE 1588v2 PTP
shows the PPS accuracy, with time of day measured using the test equipment as per the
topology shown in
. The average PPS accuracy value found is 250 ns.
Figure 12-4
Graph Showing PPS Accuracy
shows a topology that includes a grand master with a GPS receiver, a Cisco ASR 1002-X
Router, PTP hardware slave clocks, and a test equipment for the MTIE and TDEV measurement.
Figure 12-5
MTIE and TDEV measurement
E1 clock
input
E1 reference
Clanex - Paragon X
E1 measurement
PTP Slave
PTP Master
Gige link
PTP Grandmaster
with GPSreceiver
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