Precision Time Protocol (PTP) Commands

ptp announce interval

The ptp announce interval command configures the interval at which the configuration mode interface sends PTP announce messages. The no ptp announce interval command resets the announce interval to its default of 1 (2 seconds).

Command Mode

Interface-Ethernet Configuration

Interface-Port Channel Configuration

Command Syntax

ptp announce interval log_interval

no ptp announce interval

default ptp announce interval

Parameters

  • log_interval The number of log seconds between PTP announce messages (base 2 log (seconds)). Value ranges from -3 (1/8 second) to 4 (16 seconds); default value is 1 (2 seconds).

Examples

  • These commands set the interval between PTP announce messages sent by Ethernet interface 5 to 4 seconds.
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#ptp announce interval 2
    switch(config-if-Et5)#
    
  • These commands reset the PTP announce interval on Ethernet interface 5 to the default value of 1 (2 seconds).
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#no ptp announce interval
    switch(config-if-Et5)#
    

ptp announce timeout

The ptp announce timeout sets the timeout multiplier for the configuration-mode interface. The timeout multiplier is the number of announcement intervals that the interface will wait without receiving a PTP announce message before a timeout occurs; the range is from 2 to 255. The default multiplier is 3, which results in a 6-second timeout interval when the announce interval is set to the default of 2 seconds. To configure the announce interval, use the ptp announce interval command.

Command Mode

Interface-Ethernet Configuration

Interface-Port Channel Configuration

Command Syntax

ptp announce timeout multiplier

no ptp announce timeout

default ptp announce timeout

Parameters

  • multiplier Number of announce intervals after which the interface will time out if it does not receive a PTP announce message. The range is from 2 to 255; default value is 3.

Examples

  • This command sets the timeout multiplier for Ethernet interface 5 to 5. This means that the interface will time out if it doesnt receive a PTP announce message within five announce intervals.
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#ptp announce timeout 5
    switch(config-if-Et5)#
    
  • These commands reset the PTP timeout interval on interface Ethernet 5 to the default value of 3.
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#no ptp announce timeout 
    switch(config-if-Et5)#
    

ptp delay-mechanism

The ptp delay-mechanism command configures the delay mechanism in boundary clock mode. The no ptp delay-mechanism command disables the feature.

Command Mode

Interface-Ethernet Configuration

Interface-Port Channel Configuration

Command Syntax

ptp delay-mechanism mech_type

no ptp delay-mechanism

default ptp delay-mechanism

Parameters

  • mech_type The delay mechanism. Options include:
    • e2e end-to-end delay mechanism
    • p2p peer-to-peer mechanism

Examples

  • This command sets the delay mechanism to peer-to-peer in the boundary clock mode.
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#ptp delay-mechanism p2p
    switch(config-if-Et5)#
    
  • This command sets the delay mechanism to end-to-end in the boundary clock mode.
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#ptp delay-mechanism e2e
    switch(config-if-Et5)#
    
  • This command removes the delay mechanism configuration from Ethernet 5.
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#no ptp delay-mechanism e2e
    switch(config-if-Et5)#
    

ptp delay-req interval

The ptp delay-req interval command specifies the time in log seconds recommended to the slave devices to send delay request messages. You must enable PTP on the switch first and configure the source IP address for PTP communication. The no ptp delay-req interval command resets the interval to its default of 5 (32 seconds).

Command Mode

Interface-Ethernet Configuration

Interface-Port Channel Configuration

Command Syntax

ptp delay-req interval log_interval

no ptp delay-req interval

default ptp delay-req interval

Parameters

  • log_interval The range is -1 to 8 log seconds (base 2 log (seconds)). The default is 5 (32 seconds).

Examples

  • These commands set the minimum interval allowed between PTP delay request messages on Ethernet interface 5 to 3 (8 seconds).
    switch(config)#interface ethernet 5
    switch(config-if-Et5)# ptp delay-request interval 3
    switch(config-if-Et5)#
    
  • These commands reset the minimum interval allowed between PTP delay-request messages to the default of 5 (32 seconds).
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#no ptp delay-request interval 
    switch(config-if-Et5)#
    

ptp domain

The ptp domain command sets the domain number to use for the clock. The no ptp domain command disables the feature.

Command Mode

Global Configuration

Command Syntax

ptp domain domain_number

no ptp domain

default ptp domain

Parameters

  • domain_number Value ranges from 0 to 255.

Examples

  • This command shows how to configure domain 1 for use with a clock.
    switch(config)#ptp domain 1
    switch(config)#
    
  • This command removes the configured domain 1 for use with a clock.
    switch(config)#no ptp domain 1
    switch(config)#
    

ptp enable

The ptp enable command enables PTP on the interface. The no ptp enable command disables PTP on the interface.

Command Mode

Interface-Ethernet Configuration

Interface-Port Channel Configuration

Command Syntax

ptp enable

no ptp enable

default ptp enable

Examples:
  • This command enables PTP on Ethernet interface 5.
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#ptp enable
  • This command disables PTP on Ethernet interface 5.
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#no ptp enable

ptp forward-v1

The ptp forward-v1 command configures the switch to forward Precision Time Protocol version packets as regular multicast traffic. By default, PTP v1 packets are trapped by the CPU, logged and discarded.

The no ptp forward-v1 and default ptp forward-v1 commands restore the default forwarding behavior by removing the corresponding ptp forward-v1 command from running-config.

Command Mode

Global Configuration

Command Syntax

ptp forward-v1

no ptp forward-v1

default ptp forward-v1

Examples

  • This command configures the switch to forward PTP v1 packets as regular multicast traffic.
    switch(config)#ptp forward-v1
    switch(config)#
  • This command configures the switch to log and discard PTP v1 packets.
    switch(config)#no ptp forward-v1
    switch(config)#

ptp hold-ptp-time

The ptp hold-ptp-time command configures the PTP offset hold time in seconds. The no ptp hold-ptp-time command disables the feature.

Command Mode

Global Configuration

Command Syntax

ptp hold-ptp-time offset

no ptp hold-ptp-time

default ptp hold-ptp-time

Parameters

  • offset Value ranges from 0 to 86400.

Examples

  • This command shows how to configure the PTP offset hold time.
    switch(config)#ptp hold-ptp-time 600
    switch(config)#
  • This command removes the configured PTP offset hold time.
    switch(config)#no ptp hold-ptp-time
    switch(config)#

ptp mode

The ptp mode command configures the Precision Time Protocol (PTP) packet forwarding mode for the switch. By default, PTP is disabled globally; the mode must be changed to use PTP on switch interfaces.

The no ptp mode and default ptp mode commands return the forwarding mode to disabled by removing the ptp mode command from running-config.

Command Mode

Global Configuration

Command Syntax

ptp mode mode_name

no ptp mode

default ptp mode

Parameters

  • mode_name Default mode is disabled. Options include:
    • boundary The device acts as a boundary clock, and both runs and participates in the best master clock algorithm.
      • disabled The default mode. PTP is disabled, and the device forwards all PTP packets as normal traffic.
      • e2etransparent The device acts as an end-to-end transparent clock, synchronizing all ports to a connected master clock and updating the time interval field of forwarded PTP packets using switch residence time.
      • p2ptransparent The device acts as a peer-to-peer transparent clock, synchronizing all ports to a connected master clock and updating the time interval field of forwarded PTP packets using switch residence time and inbound path delays.
      • gptp The device runs generalized Precision Time Protocol (gPTP), participating in the best master clock algorithm but also updating the interval field of forwarded PTP packets using switch residence time and inbound path delays.

Examples

  • This command configures the switch to act as a PTP boundary clock.
    switch(config)#ptp mode boundary
    switch(config)#
  • This command restores PTP to disabled mode.
    switch(config)#no ptp mode
    switch(config)#

ptp monitor threshold mean-path-delay

Mean path delay is the mean time in nanoseconds that PTP packets take to travel between PTP master and slave. The ptp monitor threshold mean-path-delay command configures the mean-path-delay threshold in nanoseconds. When this threshold is configured, a Syslog message is generated if the value of the most recently calculated mean path delay is greater than or equal to this value.

The no ptp monitor threshold mean-path-delay and default ptp monitor threshold mean-path-delay commands clear the threshold value and prevent further Syslog messages from being generated for this parameter.

Command Mode

Global Configuration

Command Syntax

ptp monitor threshold mean-path-delay threshold

no ptp monitor threshold mean-path-delay

default ptp monitor threshold mean-path-delay

Parameter

  • threshold threshold in nanoseconds. Values range from 0 to 1000000000 (1 second).

Example

  • This command sets a mean-path-delay threshold value of 2000 nanoseconds.
    switch(config)#ptp monitor threshold mean-path-delay 2000
    

ptp monitor threshold offset-from-master

PTP offset is the difference in nanoseconds between master and slave time. The ptp monitor threshold offset-from-master command configures the offset-from-master threshold in nanoseconds. A Syslog message is generated if the most recently calculated time offset from the PTP master is outside of the range (-<threshold>, <threshold>). The maximum offset threshold is one second.

The no ptp monitor threshold offset-from-master and no ptp monitor threshold offset-from-master commands clear the threshold value and prevents further Syslog messages from being generated for this parameter.

Command Mode

Global Configuration

Command Syntax

ptp monitor threshold offset-from-master threshold

no ptp monitor threshold offset-from-master

default ptp monitor threshold offset-from-master

Parameter

  • threshold Offset threshold value in nanoseconds. Values range from 0 to 1000000000.

Example

  • This command sets an offset-from-master threshold value of 500 nanoseconds.
switch(config)#ptp monitor threshold offset-from-master 500 
switch(config)#

ptp monitor threshold skew

PTP skew is the clock frequency difference between master and slave. The ptp monitor threshold skew command configures the value of the skew-threshold percentage. A Syslog message is generated if the value of the most recently calculated skew is not in the range (1/(1+threshold), 1*(1+threshold)).

The no ptp monitor threshold skew and default ptp monitor threshold skew commands clear the threshold value and prevent further Syslog messages from being generated for this parameter.

Command Mode

Global Configuration

Command Syntax

ptp monitor threshold skew threshold

no ptp monitor threshold skew

default ptp monitor threshold skew

Parameters

  • threshold skew percentage threshold represented as a double precision (16 digit) real number ranging from 0 (0%) to 10 (1000%).

Example

  • This command sets a skew threshold value of 5 (500%).
    switch(config)#ptp monitor threshold skew 5
    switch(config)#

ptp monitor

The ptp monitor command enables and disables PTP monitoring on the switch. When PTP monitoring is enabled, the switch records PTP status and configuration information (which can be viewed using the show ptp monitor command) and generates Syslog messages for metrics whose threshold values have been configured. PTP monitoring is enabled by default.

The no ptp monitor command disables the PTP monitoring and clears all the recorded data from running-config.

Command Mode

Global Configuration

Command Syntax

ptp monitor

no ptp monitor

Related Commands

Example

  • This command disables ptp monitor PTP monitoring on the switch and clears all the recorded data.
    switch(config)#ptp monitor
    switch(config)#

ptp pdelay-neighbor-threshold

The ptp pdelay-neighbor-threshold command configures the propagation delay threshold above which the switch will consider the neighbor connected to this port to be incapable of participating in generalized Precision Time Protocol (gPTP).

The no ptp pdelay-neighbor-threshold and default ptp pdelay-neighbor-threshold commands restore the threshold to 100000 nanoseconds by removing the corresponding ptp pdelay-neighbor-threshold command from running-config.

Command Mode

Interface-Ethernet Configuration

Interface-Port Channel Configuration

Command Syntax

ptp pdelay-neighbor-threshold link_prop

no ptp pdelay-neighbor-threshold

default ptp pdelay-neighbor-threshold

Parameters

  • link_prop Threshold in nanoseconds. Value ranges from 0 to 10000000000 (ten billion). Default is 100000.

Examples

  • These commands set the link propagation delay threshold on Ethernet interface 5 to 200000 nanoseconds.
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#ptp pdelay-neighbor-threshold 200000
    switch(config-if-Et5)#
  • These commands restore the link propagation delay threshold on Ethernet interface 5 to its default value of 100000 nanoseconds.
    switch(config)#interface ethernet 5
    switch(config-if-Et5)# no ptp pdelay-neighbor-threshold
    switch(config-if-Et5)#

ptp pdelay-req interval

The ptp pdelay-req interval command configures the interval between Precision Time Protocol peer delay-request messages. The no ptp pdelay-req interval command removes the configuration.

Command Mode

Interface-Ethernet Configuration

Interface-Port Channel Configuration

Command Syntax

ptp pdelay-req interval log_interval

no ptp pdelay-req interval

default ptp pdelay-req interval

Parameters

  • log_interval The log interval in seconds (base 2 log (seconds)). Value ranges from 0 to 5.

Examples

  • This command shows how to configure the interval allowed between PTP peer delay request messages on interface Ethernet 5.
    switch(config)#interface ethernet 5
    switch(config-if-Et5)# ptp pdelay-request interval 3
    switch(config-if-Et5)#
  • This command removes the configure the interval allowed between PTP peer delay request messages on interface Ethernet 5.
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#no ptp pdelay-request interval
    switch(config-if-Et5)#

ptp priority1

The ptp priority1 command configures the priority 1 value for advertising the switchs PTP clock. Priority 1 is the most significant of the six factors used by devices in the selection of a master clock. Lower values indicate higher priority.

The no ptp priority1 and default ptp priority1 commands restore the priority 1 default setting of 128.

Command Mode

Global Configuration

Command Syntax

ptp priority1 priority_rate

no ptp priority1

default ptp priority1

Parameters

  • priority_rate Value ranges from 0 to 255. Default is 128.

Examples

  • This command sets the priority 1 level for the switchs PTP clock to 120.
    switch(config)#ptp priority1 120
    switch(config)#
  • This command restores the default priority 1 level of 128.
    switch(config)#no ptp priority1
    switch(config)#

ptp priority2

The ptp priority2 command sets the priority 2 value for the clock. The range is from 0 to 255. Priority 2 is the fifth most significant of the six factors used by devices in the selection of a master clock. Lower values indicate higher priority.

The no ptp priority2 and default ptp priority2 commands restore the priority 2 default setting of 128.

Command Mode

Global Configuration

Command Syntax

ptp priority2 priority_rate

no ptp priority2

default ptp priority2

Parameters

  • priority_rate Specifies the priority 2 level for the PTP clock. Value ranges from 0 to 255; default value is 128.

Examples

  • This command sets the priority 2 level for the switchs PTP clock to 120.
    switch(config)#ptp priority2 120
    switch(config)#
  • This command restores the default priority 2 level of 128.
    switch(config)#no ptp priority2 
    switch(config)#

ptp role

The ptp role command configures a port to operate either in the master mode or the dynamic mode when it is executed in the interface configuration mode.

The no ptp role command removes the master or dynamic mode if it was previously configured on an interface.

Command Mode

Interface-Ethernet Configuration

Command Syntax

ptp role [dynamic | master]

no ptp role

default ptp role

Related Commands

Parameters

  • dynamic the dynamic mode.
  • master the master clock mode that has the most precise time.

Examples

  • This command configures a port to operate in the master mode for Ethernet interface 1.
    switch(config)#interface ethernet 1
    switch(config-if-Et1)#ptp role master
  • This command configures a port to operate in the dynamic mode for Ethernet interface 1.
    switch(config)#interface ethernet 1
    switch(config-if-Et1)#ptp role dynamic

ptp source ip

The ptp source ip command configures the source IP address for all PTP packets. The IP address can be in IPv4 format. The no ptp source ip command removes this configuration.

Command Mode

Global Configuration

Command Syntax

ptp source ip ipv4_addr

no ptp source ip

default ptp source ip

Parameters

  • ipv4_addr IPv4 address

Examples

  • This command configures the source IP address 10.0.2.1 for all PTP packets.
    switch(config)#ptp source ip 10.0.2.1
    switch(config)#
  • This command removes the source IP address 10.0.2.1 for all PTP packets.
    switch(config)#no ptp source ip
    switch(config)#

ptp sync timeout

A PTP synchronization timeout occurs if a sync message is not received for a specified period of time, calculated as a multiple of the PTP sync-message interval. The ptp sync timeout command configures the sync timeout multiplier. The range is 2 to 255, with a default of 20 (20 times the sync interval). To configure the sync interval, use the ptp sync-message interval command.

The no ptp sync timeout and default ptp sync timeout commands restore the PTP sync timeout multiplier to its default value of 20.

Command Mode

Interface-Ethernet Configuration

Command Syntax

ptp sync timeout interval_multiplier

no ptp sync timeout

default ptp sync timeout

Parameters

  • interval_multiplier The number of sync intervals that must pass without the configuration mode interface receiving a PTP sync message before a timeout occurs. Value ranges from 2 to 255. Default value is 20.

Example

  • These commands configure the sync timeout on Ethernet interface 5 to ten times the configured sync interval.
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#ptp sync timeout 10
    switch(config-if-Et5)#

ptp sync-message interval

The ptp sync-message interval command configures the time for sending synchronization messages by specifying its log2 value. Default values and ranges depend on the PTP mode, which is set using the ptp mode command.

The no ptp sync-message interval and default ptp sync-message interval commands restore the sync interval to its default (1 second in boundary mode, 1/8 second in gptp mode) by removing the corresponding ptp sync-message interval command from running-config.

Command Mode

Interface-Ethernet Configuration

Interface-Port Channel Configuration

Command Syntax

ptp sync-message interval log_interval

no ptp sync-message interval

default ptp sync-message interval

Parameters

  • log_interval The interval between PTP synchronization messages sent from the master to the slave (base 2 log(seconds)). Values vary according to PTP mode: in boundary mode, the range is from -7 (1/128 second) to 3 (8 seconds) and the default value is 0 (1 second). In gptp mode, the range is from -3 (1/8 second) to 17 (131072 seconds, approximately 36 hours) with a default of -3.

Examples

  • These commands set the interval for PTP synchronization messages on Ethernet interface 5 to 3 (8 seconds).
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#ptp sync-message interval 3
    switch(config-if-Et5)#
  • In boundary mode, these commands restore the interval for PTP synchronization messages on Ethernet interface 5 to its default of 0 (1 second).
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#no ptp sync-message interval
    switch(config-if-Et5)#

ptp transport

The ptp transport command configures the PTP transport type for a specific interface. Any values set in interface PTP configuration mode override the settings in the PTP configuration profile associated with the interface. The no ptp transport command removes the stetting from the running-config.

Command Mode

Interface-Ethernet Configuration

Interface-Port Channel Configuration

Command Syntax

ptp transport TRANSPORT_TYPE

no ptp transport

default ptp transport

Parameters

  • TRANSPORT_TYPE The transport mode in boundary clock mode. Options include:
    • ipv4 The IPv4 address used as the transport type on the interface.
    • layer2 The Layer 2 protocol used as the transport type on the interface.

Examples

  • This command overrides the transport type in the profile and sets it to be IPv4 for the interface.
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#ptp transport ipv4
    switch(config-if-Et5)#
  • This command removes the interval for PTP synchronization messages on interface Ethernet 5.
    switch(config)#interface ethernet 5
    switch(config-if-Et5)#no ptp transport 
    switch(config-if-Et5)#

ptp ttl

The ptp ttl command configures the Time To Live (TTL) value of the PTP packets. The no ptp ttl resets the TTL value to the default value of 1 hop by removing the ptp ttl command from the running-config.

Command Mode

Global Configuration

Command Syntax

ptp ttl hop_count

no ptp ttl

default ptp ttl

Parameters

  • hop_count The TTL value measured in hops. Value ranges from 1 to 255, default is 1.

Example

  • This command sets the time to live of the PTP packets to 60 hops.
    switch(config)#ptp ttl 60
    switch(config)#
  • This command resets the time to live of the PTP packets to the default value of 1 hop.
    switch(config)#no ptp ttl
    switch(config)#

show ptp foreign-master-record

The show ptp foreign-master-record command displays information about foreign masters (PTP sources not designated as the switchs master from which the switch has received sync packets).

Command Mode

EXEC

Command Syntax

show ptp foreign-master-record

Examples

  • This command displays information about PTP foreign masters.
    switch#show ptp foreign-master-record
    No Foreign Master Records
    switch#
    

show ptp interface counters

The show ptp interface counters command displays PTP interface counters for all interfaces.

Command Mode

EXEC

Command Syntax

show ptp [INTERFACE_NAME] counters

Parameters

  • INTERFACE_NAME Interface type and numbers. Options include:
    • <no parameter> Display information for all interfaces.
    • ethernet e_range Ethernet interface range specified by e_range.
    • loopback l_range Loopback interface specified by l_range.
    • management m_range Management interface range specified by m_range.
    • port-channel p_range Port-Channel Interface range specified by p_range.
    • vlan v_range VLAN interface range specified by v_range.
    • vxlan vx_range VXLAN interface range specified by vx_range.

Valid range formats include number, number range, or comma-delimited list of numbers and ranges.

Examples

  • This command displays the PTP interface counters.
    switch#show ptp interface ethernet 5 counters
    Interface Ethernet5
    Announce messages sent: 0
    Announce messages received: 0
    Sync messages sent: 0
    Sync messages received: 0
    Follow up messages sent: 0
    Follow up messages received: 0
    Delay request messages sent: 0
    Delay request messages received: 0
    Delay response messages sent: 0
    Delay response messages received: 0
    Peer delay request messages sent: 0
    Peer delay request messages received: 0
    Peer delay response messages sent: 0
    Peer delay response messages received: 0
    Peer delay response follow up messages sent: 0
    Peer delay response follow up messages received: 0
    switch# 
    

show ptp interface

The show ptp interface command displays PTP information for all the interfaces on the device.

Command Mode

EXEC

Command Syntax

show ptp [INTERFACE_NAME][STATUS_FILTER]

Parameters

  • INTERFACE_NAME Interface type and numbers. Options include:
    • <no parameter> Display information for all interfaces.
    • ethernet e_range Ethernet interface range specified by e_range.
    • loopback l_range Loopback interface specified by l_range.
    • management m_range Management interface range specified by m_range.
    • port-channel p_range Port-Channel Interface range specified by p_range.
    • vlan v_range VLAN interface range specified by v_range.

Valid range formats include number, number range, or comma-delimited list of numbers and ranges.

  • STATUS_FILTER Filters interfaces by their configuration status. Options include:
    • <no parameter> all interfaces.
    • enabled PTP configured interfaces.

Examples

This command displays PTP information for all the interfaces on the device.

switch#show ptp interface
Interface Ethernet1
PTP: Disabled
Port state: Disabled
Sync interval: 1.0 seconds
Announce interval: 2.0 seconds
Announce interval timeout multiplier: 3
Delay mechanism: end to end
Delay request message interval: 32.0 seconds
Transport mode: ipv4

Interface Ethernet5
PTP: Disabled
Port state: Disabled
Sync interval: 8.0 seconds
Announce interval: 2.0 seconds
Announce interval timeout multiplier: 5
Delay mechanism: peer to peer
Peer delay request message interval: 8.0 seconds
Peer Mean Path Delay: 0
Transport mode: ipv4

switch#

show ptp local-clock

The show ptp local-clock command displays the Precision Time Protocol (PTP) clock information.

Command Mode

EXEC

Command Syntax

show ptp local-clock

Example

  • This command shows how to display the PTP local clock and offset.
    switch#show ptp local-clock
    PTP Mode: Boundary Clock
    Clock Identity: 0x00:1c:73:ff:ff:1e:83:24
    Clock Domain: 1
    Number of PTP ports: 24
    Priority1: 128
    Priority2: 128
    Clock Quality:
     Class: 248
     Accuracy: 0x30
     OffsetScaledLogVariance: 0xffff
    Offset From Master: 0
    Mean Path Delay: 0
    Steps Removed: 0
    switch#
    

show ptp masters

The show ptp masters command displays information about the switchs PTP master and grand master clocks.

Command Mode

Privileged EXEC

Command Syntax

show ptp masters

Examples

  • This command displays information about the switchs PTP master and grand master clocks.
    switch#show ptp masters
    Parent Clock:
    Parent Clock Identity: 0x00:1c:73:ff:ff:00:72:40
    Parent Port Number: 0
    Parent IP Address: N/A
    Observed Parent Offset (log variance): N/A
    Observed Parent Clock Phase Change Rate: N/A
    
    Grandmaster Clock:
    Grandmaster Clock Identity: 0x00:1c:73:ff:ff:00:72:40
    Grandmaster Clock Quality:
     Class: 248
     Accuracy: 0x30
     OffsetScaledLogVariance: 0xffff
     Priority1: 128
     Priority2: 128
    switch#
    

show ptp monitor

The show ptp monitor command to displays the list of up to 100 recorded entries of offset from master, mean path delay and skew values, along with current PTP mode, whether or not the feature is enabled, number of entries displayed and the configured thresholds for each metric. Entries are sorted by the system time at which the value was calculated, starting with the most recent data at the top.

Command Mode

EXEC

Command Syntax

show ptp monitor

Example

  • This command displays the information recorded by PTP monitoring.
    Switch#show ptp monitor 
    PTP Mode: Boundary Clock 
    Ptp monitoring: enabled 
    Number of entries: 5 
    Offset from master threshold: 1500 
    Mean path delay threshold: not configured 
    Skew threshold: 0.5 
    InterfaceTimeOffset fromMean PathSkew 
    Master (ns)Delay (ns) 
    ---------- ----------------------------- ------------ ------------- ----------- 
    Et821:23:12.901 UTC Feb 22 20187158491.003159918 
    Et121:23:12.901 UTC Feb 22 201811336721.004990621 
    Et221:23:12.901 UTC Feb 22 201870677991.002744199 
    Et121:23:12.901 UTC Feb 22 201880358611.003432049 
    Et121:23:12.901 UTC Feb 22 201861034150.998974658
    

show ptp source ip

The show ptp source ip command displays the PTP source IP for the device.

Command Mode

Privileged EXEC

Command Syntax

show ptp source ip

Examples

  • This command shows the PTP source IP to be 10.0.2.1.
    switch#show ptp source ip
    PTP source IP: 10.0.2.1
    switch#

show ptp

The show ptp command displays summary Precision Time Protocol (PTP) information and PTP status of switch ports.

Command Mode

EXEC

Command Syntax

show ptp

Example

  • This command displays summary PTP information.
    switch#show ptp
    PTP Mode: gptp - Generalized PTP Clock
    Clock Identity: 2001:0DB8:73:ff:ff:26:fd:90
    Grandmaster Clock Identity: 2001:0DB8:96:ff:fe:6c:ed:02
    Number of slave ports: 1
    Number of master ports: 6
    Slave port: Ethernet33
    Mean Path Delay (nanoseconds): 718
    Steps Removed: 1
    Neighbor Rate Ratio: 1.00000007883
    Rate Ratio: 1.00000007883
    Interface StateASTime Since LastNeighborMean PathResidence 
    Capable ChangedRateRatioDelay (ns)Time (ms) 
    --------- -------- ------- ------------------ ----------- -----------
    Et1 Disabled NoNever1.000
    Et2 Disabled NoNever1.000
    Et3 Disabled NoNever1.000
    Et4 Disabled NoNever1.000
    Et5 Disabled NoNever1.000
    Et6 Disabled NoNever1.000
    Et7 Master Yes0:21:081.000000094200