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DXD8/PTP User Manual (rev 2.15)
4.2 PTP - CLOCK / GRANDMASTER (MENU 5.2)
Menu 5.2 lets you set the following fields for the PTP port.
•
Domain
: 0 to 127; default = 0
•
Priority 1
: 0 to 255
•
Priority 2
: 0 to 255
Priorities are used in the BMCA to select the grandmaster - lower values have a
higher priority (see 9.5 for more information on the Grandmaster selection).
4.3 PORT CONTROLS (MENU 5.3)
•
PTP Version
: Several versions of PTP are available on the DXD-8:
-
PTP 2.0 - Default
-
PTP 2.1
-
PTP (Layer 2) 2.0
-
PTP (Layer 2) 2.1
-
AVB 2011 (option)
-
AVB 2020 (option)
-
PTP v1
•
Profile
: Different profiles are supported by the DXD-8:
-
PTP - Default PTP profile
-
AES 67
-
ST2059
•Profile Port Timing Action:
Among other things, IEEE1588 profiles define the range and default values of all configurable attributes. This is
very useful as selecting a specific profile on several networks would set all the parameters to the default values
and allow for a quick set up.
Selecting ‘Load profile defaults’ will cause all the timing values to reset to the
profile default values.
Note that, when changing the PTP version or the profile, a message appears,
offering the same option.
•
Delay Mechanism
: Two different delay mechanism are defined in IEEE 1588:
-
E2E: End to End
-
P2P: Peer to Peer
Selecting a delay mechanism is done from this menu.
Note that the availability of some of the choices described above for Profile & Delay Mechanism depends on the PTP
version currently selected, as sown in the table below. For example, PTP v1 did not offer profiles and only supported
End-to-End delay mechanism.
VERSION/PROFILE
CHANGE
Do you want to RESET
Timing values to their
Default values?
Press UP to Reset now
Press Any Other Key to Exit
DXD-8 - Menu 5.3 PORT CONTROLS - Choices
PTP Version
PTP Profile
Delay Mechanism
Default
SMPTE ST2059
AES67
E2E
P2P
PTP 2.0
√
√
√
√
PTP 2.1
√
√
√
√
PTP (Layer 2) 2.0
√
√
√
√
√
PTP (Layer 2) 2.1
√
√
√
√
√
AVB 2011
√
√
√
AVB 2020
√
√
√
PTP Version1
√
√
1
