Contents

Network synchronization commands· 1

display network-clock self-test-result 1

display network-clock source· 2

display network-clock status· 4

display network-clock version· 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

network-clock work-mode manual mdc· 13

Synchronous Ethernet commands· 15

display esmc· 15

esmc enable· 16

synce state· 17

synchronous mode· 18

Network synchronization commands

All these commands are supported on the default MDC. The network-clock ssmcontrol and network-clock work-mode manual mdc commands and the bits0 and bits1 keywords are not configurable on non-default MDCs. For more information about MDCs, see Virtual Technologies Configuration Guide.

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

mdc-admin

mdc-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.

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 E1A network clock chip: ·     Normal—The E1A is operating correctly. ·     Fault—The E1A has failed.
E1B	State of the E1B network clock chip: ·     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.

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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

mdc-admin

mdc-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.

Usage guidelines

This command displays the states of clock sources only for the current MDC.

To display BITS clock sources, execute this command on any MDC.

To display information about a line clock source, you must execute this command on the MDC that contains the line clock input port. This command does not display the line clock source if all settings of the clock source are default.

Examples

# Display the states of clock sources.

<Sysname> display network-clock source

Traced reference: XGE1/0/1

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

BITS0       Lost    255       Unknown   ON        4       N/A       2 Mbps

BITS1       Lost    255       Unknown   ON        4       N/A       2 Mbps

PTP         N/A     255       Unknown   ON        N/A     N/A       N/A

XGE1/0/1    Normal  10        Unknown   OFF       N/A     Yes       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: ·     BITS clock source. The available values include BITS0 and BITS1. ·     PTP clock source. The value is PTP. ·     Line clock source. The value is the line clock input port. This information is displayed only when a line clock input port is configured.
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	SSM quality level in descending order: ·     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	Whether to use the manually assigned SSM quality level: ·     ON—Uses the manually assigned SSM quality level. ·     OFF—Extracts the SSM quality level from the received timing signal.
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	Whether the port is a line clock input 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 clock sources.
Frequency	Frequency of the BITS clock: ·     2 Mbps. ·     2 MHz.

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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

mdc-admin

mdc-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.

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. If no clock source is available, this field displays N/A.
Traced reference	Traced clock source. If no clock source has been traced, this field displays N/A.
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.

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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

mdc-admin

mdc-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.

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 data: 2015-05-14

Table 4 Command output

Field	Description
Type	Model of the clock daughter card
PCB	PCB version of the clock daughter card
FPGA version	Version of the Field Programmable Gate Array (FPGA)
Release date	Release date of the current clock daughter card version

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network-clock source forcessm

Use network-clock source forcessm to configure the method for setting the SSM 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 SSM level of a clock source is manually assigned, not extracted from the received timing signal.

Views

System view

Predefined user roles

network-admin

mdc-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: Extracts the SSM level from the received timing signal.

on: Uses the manually configured SSM level rather than extracts the SSM level from the received timing signal .

Usage guidelines

For BITS and PTP, this command is configurable only on the default MDC. For a line clock, this command is configurable only on the MDC that contains the line clock input port.

For a BITS clock with a frequency of 2 MHz (configured by using the network-clock source frequency command), do not use this command to extract the SSM level from the received timing signal. Doing so might cause inaccurate clock synchronization.

Examples

# Extract the SSM level of the BITS 0 clock source from the received timing signal.

<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 or specifies a PEX by its virtual chassis number.

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.

Usage guidelines

This command is configurable only on the default MDC. However, the command setting takes effect on all MDCs.

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

mdc-admin

Parameters

chassis chassis-number: Specifies an IRF member device by its member ID.

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.

Usage guidelines

For BITS and PTP, this command is configurable only on the default MDC. For a line clock, this command is configurable only on the MDC that contains the line clock input port.

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.

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.

Usage guidelines

This command is configurable only on the default MDC. However, the command setting takes effect on all MDCs.

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

mdc-admin

Parameters

chassis chassis-number: Specifies an IRF member device by its member ID.

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 BITS and PTP, this command is configurable only on the default MDC. For a line clock, this command is configurable only on the MDC that contains the line clock input port.

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.

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.

This command is configurable only on the default MDC. However, the command setting takes effect on all MDCs.

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

mdc-admin

Parameters

chassis chassis-number: Specifies an IRF member device by its member ID.

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 specify a line clock input port, use the network-clock work-mode command on the MDC that contains the port. If the MDC is not the default MDC, you must also configure the network-clock work-mode manual mdc command on the default MDC.

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

network-clock work-mode manual mdc

Use network-clock work-mode manual mdc to specify the manually specified clock reference on an MDC as the primary clock reference for the entire system.

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

Syntax

In standalone mode:

network-clock work-mode manual mdc mdc-id

undo network-clock work-mode manual mdc

In IRF mode:

network-clock chassis chassis-number work-mode manual mdc mdc-id

undo network-clock chassis chassis-number work-mode manual mdc

Default

The clock reference manually specified on the default MDC takes effect on the entire system.

Views

System view

Predefined user roles

network-admin

Parameters

mdc mdc-id: Specifies the ID of a non-default MDC on which you have manually specified a clock reference. The value range for the mdc-id argument is 2 to 5.

chassis chassis-number: Specifies an IRF member device by its member ID.

Usage guidelines

This command is configurable only on the default MDC. The command setting takes effect on all MDCs.

Before you can specify a non-default MDC to provide the primary synchronization reference, use the display network-clock source command to verify that the MDC has a clock source in Normal state. If the MDC does not have a correctly operating clock source, it cannot be configured to provide timing for other MDCs.

Examples

# Use the clock reference manually specified on MDC 2 to provide timing for the entire system.

<Sysname> system-view

[Sysname] network-clock work-mode manual mdc 2

Related commands

display network-clock status

network-clock work-mode

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

mdc-admin

mdc-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-GigabitEthernet1/0/1

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 information.
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.

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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

mdc-admin

Usage guidelines

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

Examples

# Enable ESMC on Ten-GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 1/0/1

[Sysname-Ten-GigabitEthernet1/0/1] esmc enable

Related commands

display esmc

synchronous mode

synce state

Use synce state to set the clock mode on a copper GE port.

Use undo synce state to restore the default.

Syntax

synce state { master | slave }

undo synce state

Default

The clock mode of a GE copper port is automatically negotiated.

Views

Layer 2 Ethernet interface view

Layer 3 Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

master: Specifies the master clock mode.

slave: Specifies the slave clock mode.

Usage guidelines

To avoid a negotiation result that conflicts with your clock synchronization trail design, manually set the clock mode.

·     To derive timing from the upstream clock, set the clock mode to slave.

·     To provide timing for the downstream clock, set the clock mode to master.

Examples

# Configure Ten-GigabitEthernet 1/0/1 to operate in master mode.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 1/0/1

[Sysname-Ten-GigabitEthernet1/0/1] synce state master

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

mdc-admin

Usage guidelines

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

After you disable the synchronous mode for an interface by using the undo synchronous mode command, this interface might still be displayed in the display network-clock source command output. However, this interface can no longer act as a line clock source to participate in clock reference selection.

Examples

# Enable the synchronous mode on Ten-GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 1/0/1

[Sysname-Ten-GigabitEthernet1/0/1] synchronous mode

Related commands

display esmc

esmc enable