7210 SAS-MXP, R6, R12, S, SX, T BASIC SYSTEM
CONFIGURATION GUIDE RELEASE 22.9.R1
System management
Figure 29: Boundary clock
6.5.9 1PPS and 10MHz output interface
The 7210 SAS-T, 7210 SAS-Mxp, 7210 SAS-R6, and 7210 SAS-R12 support 1PPS and 10 MHz output
interfaces. These interfaces output the recovered signal from the system clock when PTP is enabled.
Note:
1pps and 10MHz signals are available only when PTP is enabled.
6.5.10 Configuration guidelines and restrictions for PTP
The following guidelines and restrictions apply for PTP configuration:
• On 7210 SAS devices, only a single profile (IEEE 1588v2, G.8265.1, or G.8275.1) can be enabled for
all PTP communications (both towards its timeTransmitter and timeReceiver connections) at any point
in time.
• The PTP G.8275.1 profile is supported only on the 7210 SAS-Mxp,7210 SAS-R6, 7210 SAS-R12,
7210 SAS-Sx 1/10GE, 7210 SAS-Sx 10/100GE 64SFP+ 4QSFP28, and 7210 SAS-T devices.
On the 7210 SAS-R12, the G.8275.1 profile is supported only for IMMv2 cards.
When using the G.8275.1 profile, the following restrictions apply:
– The delay and sync requests are set to 16 pps by default and are not configurable.
– The announce rate is set to 8 pps by default and is not configurable.
– A change of profile to G.8275.1 or from G.8275.1 to another profile requires a reboot of the node.
– Only a single multicast timeReceiver is supported per port.
• PTP with Ethernet encapsulation is supported only with the G.8275.1 profile.
• PTP over IP encapsulation is not supported with the G.8275.1 profile. It is supported only with the IEEE
1588v2 and G.8265.1 profiles.
3HE 18197 AAAB TQZZA
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