General Settings; Cli Configuration - Tripp Lite NGI-M08POE8-L2 Owner's Manual

PTP (IEEE-1588 V2)
PTP (Precision Time Protocol) is a distributed protocol to do time synchronization with each
other systems in the network.
There are 4 different clocks in PTP:
1. Ordinary Clock: Switch communicates with the network by using specified single port.
It will be same as grand master clock.
2. Boundary Clock: Switch can use multiple ports to communicate with network and each
port behaves as ordinary clock. Port is selected as either master or member based on its
local clock and data sets.
3. Transparent Clock: It forwards all received PTP messages and measures and
accumulate delay timers in correction field.
4. Forward Clock: It forward all received PTP messages in domain ports.
PTP works in 2 phases:
1. Establishing hierarchy: Only ordinary or boundary clocks will have this phase.
a. Processes all received announce messages by using "Best Master Clock (BMC)"
algorithm and identifies itself as either master or member.
2. Clock Synchronization:
a. Master sends "Sync" message to member
b. Member sends "DReq (Delay Request)" message to master
c. Master sends "Dresp (Delay Response)" message to member
d. Member will adjust its clock by using parameters in above messages.

6.11.5 General Settings

6.11.5.1 CLI Configuration

Node
Enable show ptp information
enable configure terminal
configure ptp enable
configure no ptp enable
configure ptp primary-domain <0-127>
configure no ptp primary-domain
Example:
 Enabling PTP: This command is used to enable PTP; by default PTP is disabled
L2SWITCH(config)#ptp enable
 Disabling PTP: This command is used to disable PTP
L2SWITCH(config)#no ptp enable
Command
This command displays PTP global
configurations, PTP domain configurations and
PTP port configurations.
This command changes the node to configure
node.
This command enables PTP.
This command disables PTP.
This command configures a specified Domain
ID as the PTP's primary domain.
This command resets the primary domain ID
default domain ID (0).
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Description