Contents

Network synchronization commands· 1

display network-clock self-test-result 1

display network-clock source· 2

display network-clock status· 3

display network-clock version· 5

network-clock lpuport 5

network-clock source forcessm·· 6

network-clock source frequency· 7

network-clock source priority· 8

network-clock source sa-bit 9

network-clock source ssm·· 10

network-clock ssmcontrol 11

network-clock work-mode· 12

reset network-clock· 13

Synchronous Ethernet commands· 15

display esmc· 15

esmc enable· 16

synchronous mode· 17

Network synchronization commands

display network-clock self-test-result

Use display network-clock self-test-result to display the self-test result of the network clock monitoring module.

Syntax

In standalone mode:

display network-clock self-test-result

In IRF mode:

display network-clock self-test-result [ chassis chassis-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

chassis chassis-number: Specifies an IRF member device by its member ID. If you do not specify a member device, this command displays the test result for all member devices. (In IRF mode.)

Examples

# Display the self-test result of the network clock monitoring module.

<Sysname> display network-clock self-test-result

Clock module state: Normal

  FPGA            : Normal

  E1A             : Normal

  E1B             : Normal

  Clock Chip      : Normal

Table 1 Command output

Field	Description
Clock module state	State of the network clock monitoring module: ·         Normal—The network clock monitoring module is operating correctly. ·         Fault—The network clock monitoring module is not operating correctly. The module changes to this state when its FPGA, E1A, E1B, or clock chip has failed.
FPGA	State of the field programmable gate array (FPGA): ·         Normal—The FPGA is operating correctly. ·         Fault—The FPGA has failed.
E1A	State of the network clock chip E1A: ·         Normal—The E1A is operating correctly. ·         Fault—The E1A has failed.
E1B	State of the network clock chip E1B: ·         Normal—The E1B is operating correctly. ·         Fault—The E1B has failed.
Clock Chip	State of the clock chip: ·         Normal—The clock chip is operating correctly. ·         Fault—The clock chip has failed.

 

display network-clock source

Use display network-clock source to display the states of clock sources.

Syntax

In standalone mode:

display network-clock source

In IRF mode:

display network-clock source [ chassis chassis-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

chassis chassis-number: Specifies an IRF member device by its member ID. If you do not specify a member device, this command displays the states of clock sources on all IRF member devices. (In IRF mode.)

Examples

# Display the states of clock sources.

<Sysname> display network-clock source

Traced reference: Pos3/1/1

Reference   State   Priority  SSM level  Force SSM  Sa-Bit  LPU port   Frequency

BITS0       Lost    255       Unknown    ON         4       In         2 Mbps

BITS1       Lost    255       Unknown    ON         4       Out        2 MHz

PTP         N/A     1         Unknown    ON         N/A     N/A        N/A

Pos3/1/1    Normal  10        Unknown    OFF        N/A     Yes        N/A

Pos3/1/3    Normal  15        Unknown    ON         N/A     No         N/A

Table 2 Command output

Field	Description
Traced reference	Traced clock source. If a clock source is traced, the network clock monitoring module distributes its timing signal to all interface cards. If no clock source has been traced, this field displays N/A.
Reference	Clock source.
State	State of the clock source: ·         Normal—The clock source is operating correctly. ·         Lost—The clock source is not available or is in an error condition. ·         N/A—PTP is used for time synchronization.
Priority	Priority of the clock source.
SSM level	Clock source quality level in the SSM, by descending order of quality: ·         PRC—G.811 primary reference clock. ·         SSU-A—G.812 primary-level SSU. ·         SSU-B—G.812 second-level SSU. ·         SEC—SDH equipment clock. ·         DNU—Do not use for synchronization. ·         Unknown—Unknown quality level.
Force SSM	Method for setting the quality of the clock source: ·         ON—Sets the clock source's quality level to the user-assigned SSM value. ·         OFF—Extracts the SSM quality level from the timing signal sent by the clock source.
Sa-Bit	Sa bit used by BITS to transmit the SSM: ·         sa4—Bit Sa4. ·         sa5—Bit Sa5. ·         sa6—Bit Sa6. ·         sa7—Bit Sa7. ·         sa8—Bit Sa8. This field displays N/A for line clock sources, because line clocks do not support the Sa bit configuration.
LPU port	Line clock input role of the port: ·         Yes—The port has been specified as a line clock input port. ·         No—The port is not specified as a line clock input port. This field displays N/A for BITS 0, BITS 1, and PTP.
Frequency	Frequency of the BITS clock: ·         2 Mbps. ·         2 MHz. This field displays N/A for a non-BITS clock source.

 

display network-clock status

Use display network-clock status to display the operating state of the network clock monitoring module.

Syntax

In standalone mode:

display network-clock status

In IRF mode:

display network-clock status [ chassis chassis-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

chassis chassis-number: Specifies an IRF member device by its member ID. If you do not specify a member device, this command displays information for all IRF member devices. (In IRF mode.)

Examples

# Display the operating state of the network clock monitoring module.

<Sysname> display network-clock status

Mode              : Auto

Reference         : N/A

Traced reference  : N/A

Lock mode         : Unknown

SSM output level  : SSUB

SSM control enable: On

Table 3 Command output

Field	Description
Mode	Clock reference selection mode: ·         Auto—Automatic reference selection. ·         Manual—Manual reference selection.
Reference	Clock source.
Traced reference	Clock source that has been selected and traced. This field displays N/A if no clock reference has been selected.
Lock mode	Phase lock state of the clock monitoring module: ·         Freerun—Freerun mode. ·         Locked—Locked (traced) mode. ·         Holdover—Holdover state. ·         Pre-locked—Pre-locked mode. ·         Pre-locked2—Pre-locked mode 2. ·         Lost—The clock signal has been lost. ·         Unknown—No timing signal is available. The network clock monitoring module is in an exceptional condition.
SSM output level	Signal quality level of the clock source in the SSM, by descending order of quality: ·         PRC—G.811 primary reference clock. ·         SSU-A—G.812 primary-level SSU. ·         SSU-B—G.812 second-level SSU. ·         SEC—SDH equipment clock. ·         DNU—Do not use for synchronization. ·         Unknown—Unknown quality level.
SSM control enable	Contribution of SSM to automatic reference selection: ·         On—SSM is used in the selection process. ·         Off—SSM is not used in the selection process.

 

display network-clock version

Use display network-clock version to display the version of the network clock monitoring module.

Syntax

In standalone mode:

display network-clock version

In IRF mode:

display network-clock version [ chassis chassis-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

chassis chassis-number: Specifies an IRF member device by its member ID. If you do not specify a member device, this command displays information for all IRF member devices. (In IRF mode.)

Examples

# Display version information for the network clock monitoring module.

<Sysname> display network-clock version

Clock card

  Type        : SR07CK3C

  PCB         : Ver.A

  FPGA version: 100

  Release date: 2017-05-14

Table 4 Command output

Field	Description
Type	Model of the clock daughter card. The available model is SR07CK3C.
PCB	PCB version of the clock daughter card.
FPGA version	FPGA version of the clock daughter card.
Release date	Release date of the clock daughter card.

 

network-clock lpuport

Use network-clock lpuport to specify a line clock input port.

Use undo network-clock lpuport to remove a line clock input port.

Syntax

network-clock lpuport interface-type interface-number

undo network-clock lpuport interface-type interface-number

Default

No ports are specified as line clock input ports.

Views

System view

Predefined user roles

network-admin

Parameters

interface-type interface-number: Specifies an interface by its type and number.

Usage guidelines

Only main physical interfaces can act as clock input ports.

When you specify a main interface as a clock input port, you must set its clock mode to slave. The network clock monitoring module extracts clock signal from an interface only when the interface is operating in slave mode.

Examples

# Specify POS 3/1/1 as a line clock input port.

<Sysname> system-view

[Sysname] network-clock lpuport pos 3/1/1

Related commands

display network-clock source

network-clock source forcessm

Use network-clock source forcessm to configure the method for setting the quality level of a clock source.

Use undo network-clock source forcessm to restore the default.

Syntax

In standalone mode:

network-clock source { bits0 | bits1 | lpuport interface-type interface-number | ptp } forcessm { off | on }

undo network-clock source { bits0 | bits1 | lpuport interface-type interface-number | ptp } forcessm

In IRF mode:

network-clock chassis chassis-number source { bits0 | bits1 | ptp } forcessm { off | on }

network-clock source lpuport interface-type interface-number forcessm { off | on }

undo network-clock chassis chassis-number source { bits0 | bits1 | ptp } forcessm

undo network-clock source lpuport interface-type interface-number forcessm

Default

The network clock monitoring module sets the quality level of a clock source to the user-assigned value. It does not extract the quality level from the SSM sent by the clock source.

Views

System view

Predefined user roles

network-admin

Parameters

chassis chassis-number: Specifies an IRF member device by its member ID. (In IRF mode.)

bits0: Specifies the BITS 0 clock.

bits1: Specifies the BITS 1 clock.

lpuport interface-type interface-number: Specifies a line clock. The interface-type interface-number arguments specify the type and number of the line clock input port.

ptp: Specifies the Precision Timing Protocol (PTP).

off: Sets the quality level of a clock source to the value extracted from the SSM sent by the clock source.

on: Sets the quality level of a clock source to the user-assigned value.

Examples

# Set the quality level of BITS 0 to the value extracted from the SSM sent by the clock source.

<Sysname> system-view

[Sysname] network-clock source bits0 forcessm off

Related commands

display network-clock source

network-clock source frequency

Use network-clock source frequency to set the frequency of a BITS clock.

Use undo network-clock source frequency to restore the default.

Syntax

In standalone mode:

network-clock source { bits0 | bits1 } frequency { bps-2m | hz-2m }

undo network-clock source { bits0 | bits1 } frequency

In IRF mode:

network-clock chassis chassis-number source { bits0 | bits1 } frequency { bps-2m | hz-2m }

undo network-clock chassis chassis-number source { bits0 | bits1 } frequency

Default

The frequency of a BITS clock is 2 Mbps.

Views

System view

Predefined user roles

network-admin

Parameters

chassis chassis-number: Specifies an IRF member device by its member ID. (In IRF mode.)

bits0: Specifies the BITS 0 clock.

bits1: Specifies the BITS 1 clock.

bps-2m: Sets the frequency to 2 Mbps.

hz-2m: Sets the frequency to 2 MHz.

Examples

# Set the frequency to 2 MHz for BITS 0.

<Sysname> system-view

[Sysname] network-clock source bits0 frequency hz-2m

Related commands

display network-clock source

network-clock source priority

Use network-clock source priority to set the priority of a clock source.

Use undo network-clock source priority to restore the default.

Syntax

In standalone mode:

network-clock source { bits0 | bits1 | lpuport interface-type interface-number | ptp } priority priority

undo network-clock source { bits0 | bits1 | lpuport interface-type interface-number | ptp } priority

In IRF mode:

network-clock chassis chassis-number source { bits0 | bits1 | ptp } priority priority

network-clock source lpuport interface-type interface-number priority priority

undo network-clock chassis chassis-number source { bits0 | bits1 | ptp } priority

undo network-clock source lpuport interface-type interface-number priority

Default

All clock sources have a priority of 255.

Views

System view

Predefined user roles

network-admin

Parameters

chassis chassis-number: Specifies an IRF member device by its member ID. (In IRF mode.)

bits0: Specifies the BITS 0 clock.

bits1: Specifies the BITS 1 clock.

lpuport interface-type interface-number: Specifies a line clock. The interface-type interface-number arguments specify the type and number of the line clock input port.

ptp: Specifies PTP.

priority priority: Sets a priority value in the range of 1 to 255. The lower the value, the higher quality the timing signal.

Examples

# Assign a priority of 3 to BITS 0.

<Sysname> system-view

[Sysname] network-clock source bits0 priority 3

Related commands

display network-clock source

network-clock source sa-bit

Use network-clock source sa-bit to set the Sa bit used to transmit the SSM for a BITS clock.

Use undo network-clock source sa-bit to restore the default.

Syntax

In standalone mode:

network-clock source { bits0 | bits1 } sa-bit { sa4 | sa5 | sa6 | sa7 | sa8 }

undo network-clock source { bits0 | bits1 } sa-bit

In IRF mode:

network-clock chassis chassis-number source { bits0 | bits1 } sa-bit { sa4 | sa5 | sa6 | sa7 | sa8 }

undo network-clock chassis chassis-number source { bits0 | bits1 } sa-bit

Default

BITS clocks use Sa4 to transmit the SSM.

Views

System view

Predefined user roles

network-admin

Parameters

chassis chassis-number: Specifies an IRF member device by its member ID. (In IRF mode.)

bits0: Specifies the BITS 0 clock.

bits1: Specifies the BITS 1 clock.

sa-bit: Specifies an Sa bit.

·          sa4—Specifies bit Sa4.

·          sa5—Specifies bit Sa5.

·          sa6—Specifies bit Sa6.

·          sa7—Specifies bit Sa7.

·          sa8—Specifies bit Sa8.

Examples

# Specify Sa5 as the SSM bit for BITS 0.

<Sysname> system-view

[Sysname] network-clock source bits0 sa-bit sa5

network-clock source ssm

Use network-clock source ssm to assign an SSM quality level to a clock source.

Use undo network-clock source ssm to restore the default.

Syntax

In standalone mode:

network-clock source { bits0 | bits1 | lpuport interface-type interface-number | ptp } ssm { dnu | prc | sec | ssua | ssub | unknown }

undo network-clock source { bits0 | bits1 | lpuport interface-type interface-number | ptp } ssm

In IRF mode:

network-clock chassis chassis-number source { bits0 | bits1 | ptp } ssm { dnu | prc | sec | ssua | ssub | unknown }

network-clock source lpuport interface-type interface-number ssm { dnu | prc | sec | ssua | ssub | unknown }

undo network-clock chassis chassis-number source { bits0 | bits1 | ptp } ssm

undo network-clock source lpuport interface-type interface-number ssm

Default

The SSM quality level is unknown for all clock sources.

Views

System view

Predefined user roles

network-admin

Parameters

chassis chassis-number: Specifies an IRF member device by its member ID. (In IRF mode.)

bits0: Specifies the BITS 0 clock.

bits1: Specifies the BITS 1 clock.

lpuport interface-type interface-number: Specifies a line clock. The interface-type interface-number arguments specify the type and number of the line clock input port.

ptp: Specifies the PTP.

dnu: Sets the SSM quality level to DNU SSM quality level. DNU clock sources cannot participate in automatic clock reference selection.

prc: Sets the SSM quality level to G.811 primary reference clock.

sec: Sets the SSM quality level to SDH equipment clock.

ssua: Sets the SSM quality level to G.812 primary-level SSU.

ssub: Sets the SSM quality level to G.812 second-level SSU.

unknown: Sets the SSM quality level to unknown.

Usage guidelines

For the manually assigned SSM quality level to take effect, you must configure the network-clock source forcessm on command.

It takes time for an SSM quality level change to take effect. To verify the effectiveness of the change, use the display network-clock source command or check the log.

Examples

# Set the SSM quality level of BITS 0 to DNU.

<Sysname> system-view

[Sysname] network-clock source bits0 ssm dnu

network-clock ssmcontrol

Use network-clock ssmcontrol to control the use of SSM quality level in the automatic reference selection process.

Use undo network-clock ssmcontrol to restore the default.

Syntax

In standalone mode:

network-clock ssmcontrol { off | on }

undo network-clock ssmcontrol

In IRF mode:

network-clock chassis chassis-number ssmcontrol { off | on }

undo network-clock chassis chassis-number ssmcontrol

Default

The SSM quality level is ignored in the automatic reference selection process.

Views

System view

Predefined user roles

network-admin

Parameters

chassis chassis-number: Specifies an IRF member device by its member ID. (In IRF mode.)

off: Ignores the SSM quality level in clock reference selection.

on: Includes the SSM quality level as a factor for clock reference selection.

Usage guidelines

This command takes effect for automatic clock reference selection.

Examples

# Include the SSM quality level into the automatic clock reference selection process.

<Sysname> system-view

[Sysname] network-clock ssmcontrol on

Related commands

display network-clock source

network-clock ssm

network-clock work-mode

Use network-clock work-mode to set the clock reference selection mode.

Use undo network-clock work-mode to restore the default.

Syntax

In standalone mode:

network-clock work-mode { auto | manual source { bits0 | bits1 | lpuport interface-type interface-number } }

undo network-clock work-mode

In IRF mode:

network-clock chassis chassis-number work-mode { auto | manual source { bits0 | bits1 } }

network-clock work-mode manual source lpuport interface-type interface-number

undo network-clock chassis chassis-number work-mode

Default

Automatic reference selection mode applies.

Views

System view

Predefined user roles

network-admin

Parameters

chassis chassis-number: Specifies an IRF member device by its member ID. (In IRF mode.)

auto: Enables automatic reference selection.

manual source: Enables manual reference selection.

bits0: Specifies BITS 0 as the reference.

bits1: Specifies BITS 1 as the reference.

lpuport interface-type interface-number: Specifies a line clock input port as the reference. The interface-type interface-number arguments specify an interface by its type and number.

Usage guidelines

To use the timing signal from an interface as the synchronization reference, you must also specify the interface as a line clock input port by using the network-clock lpuport command.

It takes time for a clock reference selection mode change to take effect. To verify the effectiveness of the change, use the display network-clock status command or check the log.

Examples

# Specify BITS 0 as the clock reference.

<Sysname> system-view

[Sysname] network-clock work-mode manual source bits0

# Enable automatic reference selection.

<Sysname> system-view

[Sysname] network-clock work-mode auto

Related commands

display network-clock source

display network-clock status

network-clock lpuport

reset network-clock

Use reset network-clock to reset the state of the network clock monitoring module.

Syntax

In standalone mode:

reset network-clock

In IRF mode:

reset network-clock chassis chassis-number

Views

Any view

Predefined user roles

network-admin

Parameters

chassis chassis-number: Specifies an IRF member device by its member ID. (In IRF mode.)

Usage guidelines

When two devices are traced references of each other, a clock loop occurs between them. The phase lock states of the network clock monitoring modules of two devices change from Locked to Holdover. The Holdover state remains even if you clear the incorrect configurations that cause the loop. To restore the operation of the device clocks, use this command on the device that acts the clock reference to reset the state of the network clock monitoring module so that it can provide clock signals correctly to the peer device. For example, Device A and Device B are traced references of each other. To use Device A as the clock reference to provide clock signals to Device B, perform the following steps:

1.        Clear the incorrect configurations on Device A.

2.        Execute this command on Device B to reset the state of the network clock monitoring module.

3.        Configure Device A to use Device B as its clock reference.

Examples

# Reset the state of the network clock monitoring module.

<Sysname> reset network-clock

Related commands

display network-clock source

Synchronous Ethernet commands

display esmc

Use display esmc to display ESMC information.

Syntax

display esmc [ interface interface-type interface-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

interface interface-type interface-number: Specifies an interface by its type and number. If you do not specify an interface, the command displays ESMC information for all interfaces.

Usage guidelines

ESMC information is not available for interfaces in asynchronous mode.

Examples

# Display ESMC information for all interfaces.

<Sysname> display esmc

Interface   : Ten-GigabitEthernet3/1/1

Mode        : Synchronous

ESMC status : Enable

Port status : Up

Duplex mode : Full

QL received : QL-SEC

QL sent     : QL-PRC

ESMC information packets received : 2195

ESMC information packets sent     : 6034

ESMC event packets received       : 1

ESMC event packets sent           : 16

ESMC information rate             : 1 packets/sec

ESMC expiration                   : 5 seconds

Table 5 Command output

Field	Description
Interface	Interface that receives ESMC messages.
Mode	Ethernet interface mode: ·         Synchronous—Synchronous mode. Non-Synchronous—Asynchronous mode.
ESMC status	Whether ESMC is enabled: ·         Enable—ESMC is enabled. ·         Disable—ESMC is disabled.
QL received QL sent	Quality level in the ESMC packet most recently received or sent on the interface: ·         PRC—G.811 primary reference clock. ·         SSU-A—G.812 primary-level SSU. ·         SSU-B—G.812 second-level SSU. ·         SEC—SDH equipment clock. ·         DNU—Do not use for synchronization. ·         UNK—Unknown quality level.
ESMC information packets received ESMC information packets sent	Number of received or sent ESMC information packets.
ESMC event packets received ESMC event packets sent	Number of received or sent ESMC event packets.
ESMC information rate	Transmission rate of ESMC information packets. The value is fixed at 1 pps.
ESMC expiration	ESMC expiration timer. The timer is fixed at 5 seconds.

 

Related commands

esmc enable

synchronous mode

esmc enable

Use esmc enable to enable the Ethernet synchronization messaging channel (ESMC) on an Ethernet interface.

Use undo esmc enable to disable the Ethernet synchronization messaging channel (ESMC) on an Ethernet interface.

Syntax

esmc enable

undo esmc enable

Default

ESMC is disabled on Ethernet interfaces.

Views

Layer 2 Ethernet interface view

Layer 3 Ethernet interface view

Predefined user roles

network-admin

Usage guidelines

Before you can enable ESMC, you must configure the interface to operate in synchronous mode.

Examples

# Enable ESMC on Ten-GigabitEthernet 3/1/1.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 3/1/1

[Sysname-Ten-GigabitEthernet3/1/1] esmc enable

Related commands

display esmc

synchronous mode

synchronous mode

Use synchronous mode to enable the synchronous mode on an Ethernet interface.

Use undo synchronous mode to restore the default.

Syntax

synchronous mode

undo synchronous mode

Default

Ethernet interfaces are regular Ethernet interfaces in non-synchronous mode. They do not extract timing signals, send, forward, or process ESMC packets.

Views

Layer 2 Ethernet interface view

Layer 3 Ethernet interface view

Predefined user roles

network-admin

Usage guidelines

You can configure an interface as a line clock input port only after you enable the synchronous mode on the interface.

Examples

# Enable the synchronous mode on Ten-GigabitEthernet 3/1/1.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 3/1/1

[Sysname-Ten-GigabitEthernet3/1/1] synchronous mode

Related commands

display esmc

esmc enable