7210 SAS-MXP, R6, R12, S, SX, T BASIC SYSTEM
CONFIGURATION GUIDE RELEASE 22.9.R1
System management
6.5.7.5 PTP capabilities
PTP messages are supported through IPv4 unicast with a fixed IP header size. The following table
describes the supported message rates for timeReceiver and timeTransmitter states. The ordinary clock
can only be used in the timeReceiver state. The boundary clock can be in both of these states.
Table 37: Support message rates for timeReceiver and timeTransmitter clock states
timeReceiver clock timeTransmitter clock
Grant rate
Support
message
Request rate
Min Max
Announce 1 packet every 2
seconds
1 packet every 2
seconds
1 packet every 2
seconds
Sync User-configurable with
an option to configure
8/16/32/64 packets/
second
8 packets/second 16 or 64 packets/
second
28
Delay_Resp User-configurable with
an option to configure
8/16/32/64 packets/
second
8 packets/second 16 or 64 packets/
second
28
Duration 300 seconds 1 second 1000 seconds
State and statistics data for each timeTransmitter clock are available to assist in the detection of failures or
unusual situations.
6.5.7.6 PTP ordinary timeReceiver clock for frequency
Traditionally, only clock frequency is required to ensure smooth transmission in a synchronous network.
The PTP ordinary clock with timeReceiver capability on the 7210 SAS 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.
The following figure shows a PTP ordinary timeReceiver clock network configuration.
28
Maximum PPS depends on the profile in use
3HE 18197 AAAB TQZZA
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Use subject to Terms available at: www.nokia.com/terms/.
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