System Management
Basic System Configuration Guide 271
State and statistics data for each PTP peer are available to assist in the detection of failures or
unusual situations.
PTP Ordinary Slave Clock For Frequency
Traditionally, only clock frequency is required to ensure smooth transmission in a
synchronous network. The PTP ordinary clock with slave capability on the router provides
another option to reference a Stratum-1 traceable clock across a packet switched network.
The recovered clock can be referenced by the internal SSU and distributed to all slots and
ports.Figure 20 shows a PTP ordinary slave clock network configuration.
Figure 20: Slave Clock
The PTP slave capability is implemented on the CPM, version 3 or later. The IEEE 1588v2
messages can ingress and egress the router on any line interface. Figure 21 shows the
operation of an ordinary PTP clock in slave mode.
(Duration) 300 300 1 1000
Table 36: Message Rates Ranges and Defaults (Continued)
Message Type Rates Requested by the 7X50 Rates Granted by the 7X50
Min Max Min Max
Packet
Network
1588v2
Grand
Master
PTP Slave
1588v2
Grand
Master
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