Edge-Core ECS4660-28F, Руководство по управлению, Страница: 967 / 2020

C
HAPTER
24
| System Management Commands
Precision Time Protocol
– 967 –
E
XAMPLE
Console(config)#ptp announce-receipt-timeout 10
Console(config)#
R
ELATED
C
OMMANDS
ptp log-announce-interval (968)
ptp delay-
mechanism
This command sets the delay measurement method for a boundary clock to
peer-to-peer or end-to-end mode. Use the no form to restore the default
setting.
S
YNTAX
ptp delay-mechanism { end-to-end | peer-to-peer }
no ptp delay-mechanism
end-to-end – This method measures the residence time
required for PTP event messages to cross from the input port to
the output port, and adjusts the time stamp to compensate for
this delay. The value of the correction update and checksums
are specific to each output port and message since the residence
time are not necessarily the same for all paths through the
switch or for successive messages crossing the same path.
peer-to-peer – This method measures the delay required for
PTP event messages to cross the link from the peer port on the
upstream device to the input port on the switch, as well as the
residence time required for PTP event messages to cross from
the input port to the output port, and adjusts the time stamp to
compensate for both of these delay times.
D
EFAULT
S
ETTING
peer-to-peer
C
OMMAND
M
ODE
Interface Configuration (Ethernet, Port Channel)
C
OMMAND
U
SAGE
◆
For more information, refer to the Command Usage section under the
ptp mode command.
◆
When PTP mode is set to boundary clock, the delay mechanism is
determined by the ptp delay-mechanism command. When PTP mode
is set to transparent clock, the delay mechanism is determined by
message exchanges with other clocks in the PTP domain.
E
XAMPLE
Console(config)#interface ethernet 1/1
Console(config-if)#ptp delay-mechanism end-to-end
Console(config-if)#