Configuration To Change Reference From Synce To Ptp On 7210 Sas-M - Nokia 7210 Configuration Manual

System Management
6.5.12 Configuration to Change Reference from SyncE to
On 7210 SAS-M, use of PTP and SyncE as a reference simultaneously is not
allowed. The user can configure either SyncE or PTP as a reference, but not both at
the same time.
Perform the following configuration steps to change the reference from SyncE to
PTP.
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• On the 7210 SAS-Mxp, 7210 SAS-R6, 7210 SAS-R12, 7210 SAS-Sx 1/10GE,
and 7210 SAS-T, an IP address must be configured under
config>system>security>source-address>application ptp, before PTP can
be enabled for use. The use of the system IPv4 interface address or other
loopback IPv4 interface address is recommended for PTP applications. The
IPv4 address of an IPv4 interface over a port can also be used. The PTP
software uses the configured IP address as the source IP address for both
configured peers and discovered peers.
• On the 7210 SAS-Mxp, 7210 SAS-R6, 7210 SAS-R12, and 7210 SAS-T, 1 pps
and 10 MHz interface signals should only be used when PTP is enabled. Use
these signals only after determining that the system is configured to use PTP as
a reference and is locked to PTP.
• The 7210 SAS-S 1/10GE does not support IEEE 1588v2 PTP.
• On the 7210 SAS-Mxp, 7210 SAS-R6, 7210 SAS-R12, 7210 SAS-Sx 1/10GE,
and 7210 SAS-T, PTP port-based timestamping is enabled by default on all
ports for all PTP packets at system bootup.
- When this feature is enabled, PTP packets are not forwarded transparently
through the node, regardless of the service used and whether PTP is
configured as a system clock reference. To enable transparent forwarding,
refer to PTP Message Transparent
- Regardless of whether PTP is enabled (configure>sync-if-timing>ptp>no
shutdown) or disabled (configure>sync-if-timing>ptp>shutdown), the
timestamp value stored in the correction-field (CF) is updated for all PTP
packets that are in transit through the node. This affects all PTP packets
that are not originated or terminated on the node.
To prevent this occurrence, disable PTP port-based hardware timestamps
on specific (all or select) ports by configuring the configure>port>no ptp-
hw-timestamp CLI command on ports where PTP packets are in transit.
When the feature is disabled, PTP packets in transit are transparently
forwarded without changing the timestamp value.
PTP on 7210 SAS-M
Use subject to Terms available at: www.nokia.com
7210 SAS-M, T, R6, R12, Mxp, Sx, S Basic System
Forwarding.
© 2021 Nokia.
Configuration Guide
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