· If the MEP belongs to an MA that does not carry the VLAN attribute, configurations on a member port of an aggregation group view take effect only on the current member port.

· If the MEP belongs to an MA that carries the VLAN attribute, configurations on a member port of an aggregation group take effect only when the member port leaves the aggregation group.

In an Ethernet network, you can enable CCM sending only on Layer 2/Layer 3 Ethernet interfaces and Layer 2 aggregate interfaces.

In an MPLS Layer 2 VPN, you can enable CCM sending only on Layer 3 Ethernet interfaces, Layer 3 Ethernet subinterfaces, Layer 3 aggregate interfaces, and Layer 3 aggregate subinterfaces.

Examples

# On GigabitEthernet 0/0/1, enable CCM sending on MEP 3 in service instance 5.

<Sysname> system-view

[Sysname] interface gigabitethernet 0/0/1

[Sysname-GigabitEthernet0/0/1] cfd cc service-instance 5 mep 3 enable

Related commands

cfd cc interval

Use cfd cc interval to set the value of the interval field in the CCM messages.

Use undo cfd cc interval to remove the value of the interval field in the CCM messages.

Syntax

cfd cc interval interval-value service-instance instance-id

undo cfd cc interval [ interval-value ] service-instance instance-id

Default

The value of this field is 4 for all CCM messages sent.

Views

System view

Predefined user roles

network-admin

Parameters

interval interval-value: Specifies the value of the interval field in CCM messages. The value range for the interval field is 1 to 7.

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

Usage guidelines

When setting the CCM interval, use the settings described in Table 1.

Table 1 CCM interval field encoding

CCM interval field	Transmission interval	Maximum CCM lifetime
1	10/3 milliseconds	35/3 milliseconds
2	10 milliseconds	35 milliseconds
3	100 milliseconds	350 milliseconds
4	1 second	3.5 seconds
5	10 seconds	35 seconds
6	60 seconds	210 seconds
7	600 seconds	2100 seconds

‌

Examples

# Set the value of the interval field to 3 in CCM messages sent by MEPs in service instance 2.

<Sysname> system-view

[Sysname] cfd cc interval 3 service-instance 2

Related commands

cfd cc enable

cfd dm one-way

Use cfd dm one-way to enable short-period one-way delay measurement (DM).

Syntax

cfd dm one-way service-instance instance-id mep mep-id { target-mac mac-address | target-mep target-mep-id } [dot1p dot1p-value ] [ number number ]

Views

Any view

Predefined user roles

network-admin

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

mep mep-id: Specifies the source MEP by its ID in the range of 1 to 8191.

target-mac mac-address: Specifies the target MEP by its MAC address in the format of H-H-H.

target-mep target-mep-id: Specifies the target MEP by its ID in the range of 1 to 8191.

dot1p dot1p-value: Specifies an 802.1p priority for 1DM frames. The value range for the dot1p-value argument is 0 to 7. The default value is 7.

number number: Specifies the number of 1DM frames sent. The value range for the number argument is 2 to 10, and the default is 5.

Usage guidelines

The short-period one-way DM function measures the one-way frame delay between the source and target MEPs by using 1DM frames.

To view the bridge MAC address of the target MEP, execute the display lacp system-id command on the target MEP.

Two types of one-way DM are available: short-period one-way DM and continual one-way DM. They cannot be configured at the same time for one source MEP. If you have configured continual one-way DM, you can configure short-period one-way DM only after you disable continual one-way DM. If you have configured short-period one-way DM, you can configure continual one-way DM only after the short-period one-way DM ends.

To view the short-period one-way delay test result, use the display cfd dm one-way history command on the target MEP.

Examples

# Enable the short-period one-way DM function to test the one-way frame delay from source MEP 1101 to target MEP 1003 in service instance 1.

<Sysname> cfd dm one-way service-instance 1 mep 1101 target-mep 1003

5 1DMs have been sent. Please check the result on the remote device.

Related commands

cfd dm one-way continual

display cfd dm one-way history

reset cfd dm one-way history

cfd dm one-way continual

Use cfd dm one-way continual to configure continual one-way DM.

Use undo cfd dm one-way continual to disable continual one-way DM.

Syntax

cfd dm one-way continual service-instance instance-id mep mep-id { target-mac mac-address | target-mep target-mep-id } [ dot1p dot1p-value ] [ interval interval ]

undo cfd dm one-way continual service-instance instance-id mep mep-id

Default

Continual one-way DM is disabled.

Views

System view

Predefined user roles

network-admin

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

mep mep-id: Specifies the source MEP by its ID in the range of 1 to 8191.

target-mac mac-address: Specifies the target MEP by its bridge MAC address, which is in the format of H-H-H.

target-mep target-mep-id: Specifies the target MEP by its ID in the range of 1 to 8191.

dot1p dot1p-value: Specifies the 802.1p priority of 1DM frames to be sent. The value range for the dot1p-value argument is 0 to 7, and the default is 7. The larger the value, the higher the priority.

interval interval: Specifies the interval for sending 1DM frames, in seconds. The value for the interval argument can be 1, 10, 60, or 600, and the default is 1.

Usage guidelines

Continual one-way DM continually sends 1DM frames at a configurable interval. It measures the one-way frame delay between the source and target MEPs after receiving the returned 1DM frames.

If the device supports hardware CC, you can only specify the target MEP by its MAC address. You cannot specify the target MEP by its ID.

To modify continual one-way DM settings for a source MEP, disable continual one-way DM and then reconfigure the function for the source MEP.

To display the continual one-way DM result, use the display cfd dm one-way history command on the device where the source MEP resides.

Inward-facing MEPs do not support continual one-way DM.

Examples

# Configure continual one-way DM to test the frame delay between source MEP 1101 and target MEP 2001 in service instance 1.

<Sysname> system-view

[Sysname] cfd dm one-way continual service-instance 1 mep 1101 target-mep 2001

Related commands

cfd dm two-way

display cfd dm one-way history

reset cfd dm one-way history

cfd dm two-way

Use cfd dm two-way to configure short-period two-way DM.

Syntax

cfd dm two-way service-instance instance-id mep mep-id { target-mac mac-address | target-mep target-mep-id } [ dot1p dot1p-value ] [ number number ] [ interval interval ]

Views

Any view

Predefined user roles

network-admin

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

mep mep-id: Specifies the source MEP by its ID in the range of 1 to 8191.

target-mac mac-address: Specifies the target MEP by its MAC address, which is in the format of H-H-H.

target-mep target-mep-id: Specifies the target MEP by its ID in the range of 1 to 8191.

dot1p dot1p-value: Specifies an 802.1p priority for DMM frames. The value range for the dot1p-value argument is 0 to 7. The default value is 7.

number number: Specifies the number of DMM frames to be sent. The value range for the number argument is 2 to 10, and the default is 5.

interval interval: Specifies the DMM frame sending interval, in seconds. The value takes 1, 10, 60, or 600. The default value is 1.

Usage guidelines

Short-period two-way DM sends a configurable number of DMM frames at a configuration interval. It measures the two-way frame delay between the source and target MEPs after receiving DMR frames.

Two types of two-way DM are available: short-period two-way DM and continual two-way DM. They cannot be configured at the same time for one source MEP. If you have configured continual two-way DM, you can configure short-period two-way DM only after you disable continual two-way DM. If you have configured short-period two-way DM, you can configure continual two-way DM only after the short-period two-way DM ends.

Examples

# Configure short-period DM to test the two-way frame delay between source MEP 1101 and target MEP 2001 in service instance 1.

<Sysname> cfd dm two-way service-instance 1 mep 1101 target-mep 2001

Frame delay:

Reply from 0010-fc00-6512: 10us

Reply from 0010-fc00-6512: 9us

Reply from 0010-fc00-6512: 11us

Reply from 0010-fc00-6512: 5us

Average: 8us

Frame delay variation: 1us 2us 6us 0us

Average: 2us

Packet statistics:

Sent DMMs: 5 Received: 5 Lost: 0

Table 2 Command output

Field	Description
Reply from 0010-fc00-6512	Delay of the DMR frames returned from the MEP with MAC address 0010-FC00-6512.
Average	Average frame delay or average frame delay variation.
Sent DMMs	Number of sent DMM frames .
Received	Number of received DMR frames.
Lost	Number of lost DMM frames.

‌

Related commands

cfd dm two-way continual

Use cfd dm two-way continual to configure continual two-way DM.

Use undo cfd dm two-way continual to disable continual two-way DM.

Syntax

cfd dm two-way continual service-instance instance-id mep mep-id { target-mac mac-address | target-mep target-mep-id } [ dot1p dot1p-value ] [ interval interval ]

undo cfd dm two-way continual service-instance instance-id mep mep-id

Default

Continual two-way DM is not configured.

Views

System view

Predefined user roles

network-admin

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

mep mep-id: Specifies the source MEP by its ID in the range of 1 to 8191.

target-mac mac-address: Specifies the target MEP by its MAC address, which is in the format of H-H-H. The MAC address cannot be a MAC address of a local MEP or a non-unicast MAC address.

target-mep target-mep-id: Specifies the target MEP by its ID in the range of 1 to 8191.

dot1p dot1p-value: Specifies the 802.1p priority of DMM frames to be sent. The value range for the dot1p-value argument is 0 to 7, and the default is 7. The larger the value, the higher the priority.

interval interval: Specifies the interval for sending DMM frames, in seconds. The value for the interval argument can be 1, 10, 60, or 600, and the default is 1.

Usage guidelines

Continual two-way DM continually sends DMM frames at a configurable interval. It measures the two-way frame delay between the source and target MEPs after receiving the returned DMR frames.

To modify continual two-way DM settings for a source MEP, disable continual two-way DM and then reconfigure the function for the source MEP.

To display the continual two-way DM result, use the display cfd dm two-way history command on the device where the source MEP resides.

Inward-facing MEPs do not support continual two-way DM.

Examples

# Configure continual two-way DM to test the two-way frame delay between source MEP 1101 and target MEP 2001 in service instance 1.

<Sysname> system-view

[Sysname] cfd dm two-way continual service-instance 1 mep 1101 target-mep 2001

Related commands

cfd dm two-way

cfd dm two-way threshold

display cfd dm two-way history

cfd dm two-way threshold

Use cfd dm two-way threshold to configure the lower limit and upper limit for continual two-way DM.

Use undo cfd dm two-way threshold to restore the default.

Syntax

cfd dm two-way threshold service-instance instance-id mep mep-id { lower-limit lower-limit | upper-limit upper-limit } *

undo cfd dm two-way threshold service-instance instance-id mep mep-id [ lower-limit | upper-limit ]

Default

The lower limit and upper limit for continual two-way DM are 0 and 4294967295 microseconds, respectively.

Views

System view

Predefined user roles

network-admin

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

mep mep-id: Specifies the source MEP by its ID in the range of 1 to 8191.

lower-limit lower-limit: Specifies the lower limit in the range of 0 to 4294967295 microseconds. The lower limit must be smaller than the upper limit.

upper-limit upper-limit: Specifies the upper limit in the range of 0 to 4294967295 microseconds.

Usage guidelines

This command takes effect only after you configure continual two-way DM.

When the delay time reaches or exceeds the upper limit for three consecutive times, the system displays a message about the situation.

When the delay time reaches or falls below the lower limit for three consecutive times, the system displays a message about the situation.

Examples

# Configure the continual two-way DM lower limit and upper limit as 10000 and 5000000 microseconds, respectively, for source MEP 1101 in service instance 1.

<Sysname> system-view

[Sysname] cfd dm two-way threshold service-instance 1 mep 1101 lower-limit 10000 upper-limit 5000000

Related commands

cfd dm two-way continual

cfd port-trigger

display cfd dm two-way history

cfd enable

Use cfd enable to enable CFD.

Use undo cfd enable to disable CFD.

Syntax

cfd enable

undo cfd enable

Default

CFD is disabled.

Views

System view

Predefined user roles

network-admin

Examples

# Enable CFD.

<Sysname> system-view

[Sysname] cfd enable

cfd frame-count mode

Use cfd frame-count mode to configure the frame counting mode for LM.

Use undo frame-count mode to restore the default.

Syntax

cfd frame-count mode { dot1p-based | port-based }

undo cfd frame-count mode

Default

No frame counting mode is configured for LM.

Views

Layer 3 Ethernet interface view

Layer 3 Ethernet subinterface view

Layer 3 aggregate interface view

Layer 3 aggregate subinterface view

Predefined user roles

network-admin

Parameters

dot1p-based: Counts packets by 802.1p priority.

port-based: Counts packets by interface.

Usage guidelines

To obtain accurate test results, configure the same frame counting mode on the source MEP and target MEP.

If the frame counting mode is dot1p-based, you must specify the dot1p dot1p-value option when configuring the following commands:

· cfd slm

· cfd slm continual

If the frame counting mode is port-based, do not specify the dot1p dot1p-value option when configuring the following commands:

· cfd slm

· cfd slm continual

If LM has been configured for a MEP, the frame counting mode on the interface where the MEP resides cannot be modified.

This command can be configured only in MPLS Layer 2 VPNs.

Examples

# Configure the frame counting mode for LM as dot1p-based on GigabitEthernet 0/0/1.1.

<Sysname> system-view

[Sysname] interface gigabitethernet 0/0/1.1

[Sysname-GigabitEthernet0/0/1.1] cfd frame-count mode dot1p-based

Related commands

cfd dlm continual

cfd slm

cfd slm continual

cfd linktrace

Use cfd linktrace to identify the path between the source MEP and target MP.

Syntax

cfd linktrace service-instance instance-id mep mep-id { target-mac mac-address | target-mep target-mep-id } [ ttl ttl-value ] [ hw-only ]

Views

Any view

Predefined user roles

network-admin

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

mep mep-id: Specifies the source MEP by its ID in the range of 1 to 8191.

target-mac mac-address: Specifies the destination MAC address, in the format of H-H-H.

target-map target-mep-id: Specifies the destination MEP by its ID in the range of 1 to 8191.

ttl ttl-value: Specifies the TTL value in the range of 1 to 255. The default value is 64.

hw-only: Sets the hw-only bits of the LTMs sent. If you specify this keyword, the source MEP or the target MIP does not flood LTMs that have an unknown destination MAC address.

Usage guidelines

This command identifies the path between the source MEP and target MP by using LTMs and LTRs.

Examples

# Identify the path between source MEP 1101 and target MEP 2001 in service instance 1.

<Sysname> cfd linktrace service-instance 1 mep 1101 target-mep 2001

Linktrace to MEP 2001 with the sequence number 1101-43361:

MAC address TTL Last MAC Relay action

0010-fc00-6512 63 0010-fc00-6500 Hit

Table 3 Command output

Field	Description
Linktrace to MEP 2001 with the sequence number 1101-43361	Linktrace to target MEP 2001 with the sequence number 1101-43361.
MAC address	Source MAC address in the LTRs.
TTL	TTL of the LTM when it passes the device.
Last MAC	MAC address of the last-hop device the LTM passes.
Relay action	Indicates whether the forwarding device found the destination MAC address in its MAC address table. When the standard version (IEEE 802.1ag) of CFD is used: · Hit—The current device is the destination device. · FDB—The forwarding device found the destination MAC address. · MPDB—The destination MAC address is not found, or the destination MAC address is found in the MEP or MIP database.

‌

Related commands

cfd linktrace auto-detection

display cfd linktrace-reply

cfd linktrace auto-detection

Use cfd linktrace auto-detection to enable automatic sending of LTMs.

Use undo cfd linktrace auto-detection to disable automatic sending of LTMs.

Syntax

cfd linktrace auto-detection [ size size-value ]

undo cfd linktrace auto-detection

Default

Automatic sending of LTMs is disabled.

Views

System view

Predefined user roles

network-admin

Parameters

size size-value: Specifies the size of the buffer used to store the auto-detection result, in the range of 1 to 100 (in terms of auto-detection times). The default value is 5, which means the buffer stores the results of the recent five auto-detections.

Usage guidelines

This command enables the source MEP to send LTMs when it fails to receive CCMs from the target MEP within 3.5 times the sending interval. The destination of the LTMs is the target MEP, and the TTL field value is 255. Based on the returned LTRs, the fault source can be located on the faulty link.

If you disable automatic LTM sending, the content stored in the buffer will be removed.

Examples

# Enable automatic LTM sending, and set the size of the buffer used to store the auto-detection result to 100 (in terms of auto-detection times).

<Sysname> system-view

[Sysname] cfd linktrace auto-detection size 100

Related commands

cfd linktrace

display cfd linktrace-reply auto-detection

cfd loopback

Use cfd loopback to enable loopback (LB).

Syntax

cfd loopback service-instance instance-id mep mep-id { target-mac mac-address | target-mep target-mep-id } [ number number ]

Views

Any view

Predefined user roles

network-admin

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

mep mep-id: Specifies the source MEP by its ID in the range of 1 to 8191.

target-mac mac-address: Specifies the destination MAC address of the MP, in the format of H-H-H.

target-mep target-mep-id: Specifies the target MEP by its ID in the range of 1 to 8191.

number number: Specifies the number of the sent LBMs packets. The value is in the range of 1 to 10. The default value is 5.

Usage guidelines

The LB function verifies link connectivity between the source MEP and the target MP by using LBMs and LBRs.

Examples

# Enable LB for the link between MEP 1101 and MEP 2001 in service instance 1 (assume that the link status is normal).

<Sysname> cfd loopback service-instance 1 mep 1101 target-mep 2001

Loopback to MEP 2001 with the sequence number start from 1101-43404:

Reply from 0010-fc00-6512: sequence number=1101-43404 Time=5ms

Reply from 0010-fc00-6512: sequence number=1101-43405 Time=5ms

Reply from 0010-fc00-6512: sequence number=1101-43406 Time=5ms

Reply from 0010-fc00-6512: sequence number=1101-43407 Time=5ms

Reply from 0010-fc00-6512: sequence number=1101-43408 Time=5ms

Sent: 5 Received: 5 Lost: 0

# Enable LB for the link between MEP 1101 and MEP 2001 in service instance 1 (assume that the link status is abnormal).

<Sysname> cfd loopback service-instance 1 mep 1101 target-mep 2001

Loopback to MEP 2001 with the sequence number start from 1101-43404:

Sent: 5 Received: 0 Lost: 5

Table 4 Command output

Field	Description
Loopback to MEP 2001 with the sequence number start from 1101-43404	Sends LBMs to remote MEP 2001 with the sequence number starting with 1101-43404.
Reply from 0010-fc00-6512	Reply from the MP with the MAC address 0010-FC00-6512.
sequence number	Sequence number in the LBR messages.
Time=5ms	The interval between the sending of LBMs and receiving of LBRs is 5 milliseconds.
Sent	Number of sent LBMs.
Received	Number of received LBRs.
Lost	Number of lost LBRs.

‌

cfd md

Use cfd md to create an MD.

Use undo cfd md to delete an MD.

Syntax

cfd md md-name [ index index-value ] level level-value [ md-id { dns dns-name | mac mac-address subnumber | none } ]

undo cfd md md-name

Default

No MDs exist.

Views

System view

Predefined user roles

network-admin

Parameters

md md-name: Specifies the name of an MD, which is a string of 1 to 43 characters that can contain letters, numbers, and special characters such as grave accent (`), tilde (~), exclamation mark (!), at sign (@), number sign (#), dollar sign ($), percent (%), caret (^), ampersand (&), asterisk (*), brackets ({ }, ( ),[ ], < >), hyphen (-), underscore (_), plus (+), equal sign (=), vertical bar (|), colon (:), semicolon (;), quotation mark ('), comma (,), period (.), and slash (/).

index index-value: Specifies an MD index in the range of 1 to 4294967295. If you do not specify this option, the system automatically assigns the smallest index number that is not in use. As a best practice, use the index automatically assigned by the system.

level level-value: Specifies an MD level in the range of 0 to 7.

md-id: Specifies the MD name carried by packets sent by the MEP. If you do not provide this keyword, the MD name is represented by md-name.

dns dns-name: Specifies an MD name in the format of DNS name, where dns-name represents the DNS name.

mac mac-address subnumber: Specifies an MD name containing the MAC address and an integer. The mac-address argument represents the MAC address of the MD, and the subnumber argument is in the range of 0 to 65535.

none: Specifies that no MD name is carried in the packets sent by the MEP.

Usage guidelines

An MD name must be in compliant with the specifications in IEEE802.1ag-2007.

You can create only one MD with a specific level. MD cannot be created if you enter an invalid MD name or an existing MD name or the MD index is in use.

When deleting an MD, you will also delete the configurations related to that MD.

Examples

# Create an MD named test_md1, with its level being 3.

<Sysname> system-view

[Sysname] cfd md test_md1 level 3

# Create an MD named test_md2, and the MD name carried in the packet sent by the MEP comprises the MAC address 1-1-1 and integer 1.

<Sysname> system-view

[Sysname] cfd md test_md2 level 5 md-id mac 1-1-1 1

cfd mep

Use cfd mep to create a MEP.

Use undo cfd mep to delete a MEP.

Syntax

In an Ethernet network:

· Layer 2 Ethernet interface view or Layer 2 aggregate interface view:

· cfd mep mep-id service-instance instance-id { inbound | outbound }

undo cfd mep mep-id service-instance instance-id

· Layer 3 Ethernet interface view:

cfd mep mep-id service-instance instance-id outbound

undo cfd mep mep-id service-instance instance-id

In a Layer 2 VPN:

· Layer 3 aggregate interface view or Layer 3 aggregate subinterface view:

· cfd mep mep-id service-instance instance-id inbound

undo cfd mep mep-id service-instance instance-id

· Layer 3 Ethernet interface view:

cfd mep mep-id service-instance instance-id { inbound | outbound }

undo cfd mep mep-id service-instance instance-id

· Layer 3 Ethernet subinterface view:

cfd mep mep-id service-instance instance-id inbound

cfd mep mep-id service-instance instance-id [ vlan vlan-id | service-vid vlan-id customer-vid vlan-id ] outbound

undo cfd mep mep-id service-instance instance-id

Default

No MEPs exist.

Views

Layer 2 Ethernet interface view

Layer 2 aggregate interface view

Layer 3 Ethernet interface view

Predefined user roles

network-admin

Parameters

mep mep-id: Specifies the MEP ID, in the range of 1 to 8191.

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

inbound: Creates an inward-facing MEP.

outbound: Creates an outward-facing MEP.

Usage guidelines

In creating a MEP, the service instance you specified defines the MD and MA to which the MEP belongs.

You cannot create a MEP if the MEP ID is not included in the MEP list of the relevant service instance.

Follow these guidelines when you use the command:

· Configurations in Ethernet interface view or aggregate interface view take effect only on the current interface.

· If the MEP belongs to an MA that does not carry the VLAN attribute, configurations on a member port of an aggregation group take effect only on the current member port.

· If the MEP belongs to an MA that carries the VLAN attribute, configurations on a member port of an aggregation group take effect only when the member port leaves the aggregation group.

In an Ethernet network, you can create MEPs only on Layer 2 Ethernet interfaces, Layer 2 aggregate interfaces, and Layer 3 Ethernet interfaces.

In an MPLS Layer 2 VPN:

· For L2VPN networking, you can create MEPs only on Layer 3 Ethernet interfaces, Layer 3 Ethernet subinterfaces, Layer 3 aggregate interfaces, Layer 3 aggregate subinterfaces, and Layer 2 Ethernet service instances.

· Only one inward-facing MEP can be configured for a CFD service instance.

· A MEP can only be configured on an AC interface to detect PW connectivity.

When configuring a MEP on a Layer 3 Ethernet subinterface, follow these restrictions and guidelines:

· To specify the VLAN ID, you must first configure the vlan-type dot1q vid vlan-id-list command and specify the same value for the vlan-id-list and vlan vlan-id parameters. For more information about the vlan-type dot1q vid vlan-id-list command, see VLAN termination commands in Layer 2—LAN Switching Command Reference.

· To specify the outer and inner VLAN IDs you must first configure the vlan-type dot1q vid second-dot1q command and set the same outer VLAN ID and the same inner VLAN ID in the two commands. For more information about the vlan-type dot1q vid second-dot1q command, see VLAN termination commands in Layer 2—LAN Switching Command Reference.

Examples

# Configure a MEP list in service instance 5, and create inward-facing MEP 3 in service instance 5 on GigabitEthernet 0/0/1.

<Sysname> system-view

[Sysname] cfd md test_md level 3

[Sysname] cfd service-instance 5 ma-id vlan-based md test_md vlan 100

[Sysname] cfd meplist 3 service-instance 5

[Sysname] interface gigabitethernet 0/0/1

[Sysname-GigabitEthernet0/0/1] cfd mep 3 service-instance 5 outbound

# In an MPLS Layer 2 VPN, configure a MEP list in service instance 5, and create inward-facing MEP 3 in service instance 5 on GigabitEthernet 0/0/1.1.

<Sysname> system-view

[Sysname] cfd md vpnmd level 4

[Sysname] cfd service-instance 5 ma-id string vpnma md vpnmd xconnect-group vpn1 connection ac2pw

[Sysname] cfd meplist 3 service-instance 5

[Sysname] interface gigabitethernet 0/0/1.1

[Sysname-GigabitEthernet0/0/1.1] cfd mep 3 service-instance 5 inbound

Related commands

cfd meplist

vlan-type dot1q vid (Layer 2—LAN Switching Command Reference)

vlan-type dot1q vid second-dot1q (Layer 2—LAN Switching Command Reference)

cfd meplist

Use cfd meplist to create a MEP list.

Use undo cfd meplist to delete a MEP list.

Syntax

cfd meplist mep-list service-instance instance-id

undo cfd meplist mep-list service-instance instance-id

Default

No MEP list is created.

Views

System view

Predefined user roles

network-admin

Parameters

meplist mep-list: Specifies a space-separated list of up to 10 MEP items. Each item specifies a MEP ID or a range of MEP IDs in the form of mep-id 1 to mep-id 2. The value range for the MEP ID is 1 to 8191. The mep-id 2 must be equal to or greater than mep-id 1.

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

Usage guidelines

A MEP list is a collection of local MEPs allowed to be configured and the remote MEPs to be monitored in the same MA.

Before creating a MEP list, create the relevant MD and service instance.

After you delete a MEP list, all local MEP configurations based on this list are deleted.

Examples

# create a MEP list that includes MEP 9 through MEP 15 in service instance 5.

<Sysname> system-view

[Sysname] cfd md test_md level 3

[Sysname] cfd service-instance 5 ma-id vlan-based md test_md vlan 100

[Sysname] cfd meplist 9 to 15 service-instance 5

# In an MPLS Layer 2 VPN, create a MEP list that includes MEP 9 through MEP 15 in service instance 5.

<Sysname> system-view

[Sysname] cfd md test_md level 3

[Sysname] cfd service-instance 5 ma-id string vpnma md vpnmd xconnect-group vpn1 connection ac2pw

[Sysname] cfd meplist 9 to 15 service-instance 5

Related commands

cfd md

cfd service-instance

cfd mip-rule

Use cfd mip-rule to configure the rules for generating MIPs.

Use undo cfd mip-rule to remove the rules for generating MIPs and the MIPs created in a service instance.

Syntax

cfd mip-rule { default | explicit } service-instance instance-id

undo cfd mip-rule [ default | explicit ] service-instance instance-id

Default

No rules for generating MIPs are configured and the system does not automatically generate any MIPs.

Views

System view

Predefined user roles

network-admin

Parameters

default: Specifies the default rule. If no lower-level MIP exists on an interface, a MIP is created on the current level. A MIP can be created even if no MEP is configured on the interface.

explicit: Specifies the explicit rule. If no lower-level MIP exists and a lower-level MEP exists on an interface, a MIP is created at the current level. A MIP can be created only when a lower-level MEP is created on the interface.

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

Usage guidelines

The system automatically generates MIPs on each port according to the rules configured.

This command takes effect only in Ethernet networks.

Examples

# Configure the MIP generation rule as default in service instance 5.

<Sysname> system-view

[Sysname] cfd mip-rule default service-instance 5

cfd port-trigger

Use cfd port-trigger to specify the triggering event and triggered action for port collaboration.

Use undo cfd port-trigger to cancel the triggering event and triggered action for port collaboration.

Syntax

cfd port-trigger { cc-expire | dm | rdi | slm | tst } action { block | shutdown }

undo cfd port-trigger { cc-expire | dm | rdi | slm | tst } action

Default

The triggering event and triggered action are not specified for port collaboration.

Views

Layer 2 aggregate interface view

Layer 3 Ethernet interface view

Predefined user roles

network-admin

Parameters

cc-expire: Triggers port collaboration when continuity check expires.

dm: Triggers port collaboration when the link transmission delay in continual two-way DM reaches or exceeds the upper limit, or reaches or falls below the lower limit.

rdi: Triggers port collaboration when the CCMs with the RDI flag bit set are received.

slm: Triggers port collaboration when the packet loss ratio in continual LM reaches or exceeds the upper limit, or reaches or falls below the lower limit.

tst: Triggers port collaboration when the bit error ratio in continual TST reaches or exceeds the upper limit, or reaches or falls below the lower limit.

block: Blocks the port by changing its link layer protocol state to DOWN (CFD). The port cannot send or receive any data packets.

shutdown: Shuts down the port by changing its physical state to CFD DOWN. The port cannot send or receive any data packets or protocol packets.

Usage guidelines

If a port is blocked by CFD, it can automatically come up when the link recovers, except that the block action is triggered by continual LM. To bring up the port blocked in continual LM, execute the undo cfd port-trigger slm action or cfd slm port-trigger up-delay command.

If a port is shut down by CFD, it cannot automatically come up when the link recovers. To bring up the port, you must execute the undo shutdown or undo cfd port-trigger command.

You can specify multiple triggering events for an interface. All the triggering events can take effect. When you specify multiple triggered actions for a triggering event on an interface, the most recent configuration takes effect.

The command takes effect only on the ports with outward-facing MEPs configured.

Configurations in Ethernet interface view take effect only on the current interface.

Configurations in aggregate interface view take effect only on the current aggregate interface.

If the MEP belongs to an MA that does not carry the VLAN attribute, configurations on a member port of an aggregation group take effect only on the current member port.

If the MEP belongs to an MA that carries the VLAN attribute, configurations on a member port of an aggregation group take effect only when the member port leaves the aggregation group.

Examples

# Specify the triggering event as cc-expire and the triggered action as block for port collaboration on GigabitEthernet 0/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 0/0/1

[Sysname-GigabitEthernet0/0/1] cfd port-trigger cc-expire action block

# Specify the triggering event as cc-expire and the triggered action as shutdown for port collaboration on GigabitEthernet 0/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 0/0/1

[Sysname-GigabitEthernet0/0/1] cfd port-trigger cc-expire action shutdown

Related commands

cfd cc enable

cfd dm two-way continual

cfd dm two-way threshold

cfd mep

cfd slm continual

cfd slm threshold

cfd tst continual

cfd tst threshold

cfd service-instance

Use cfd service-instance to create a service instance.

Use undo cfd service-instance to remove a service instance.

Syntax

In an Ethernet network:

cfd service-instance instance-id ma-id { icc-based ma-name | integer ma-num | string ma-name | vlan-based [ vlan-id ] } [ ma-index index-value ] md md-name [ vlan vlan-id ]

undo cfd service-instance instance-id

In an MPLS Layer 2 VPN:

cfd service-instance instance-id ma-id { icc-based ma-name | integer ma-num | string ma-name } [ ma-index index-value ] md md-name xconnect-group group-name connection connection-name

undo cfd service-instance instance-id

Default

No service instances exist.

Views

System view

Predefined user roles

network-admin

Parameters

service-instance instance-id: Specifies the service instance ID in the range of 1 to 32767.

ma-id: Creates an MA.

icc-based ma-name: Specifies that an MA is identified by an ICC. The ma-name argument is a string of 1 to 13 characters. An MD name must be compliant with the specifications in IEEE802.1ag-2007.

integer ma-num: Specifies that an MA is identified by an integer, where the ma-num argument is in the range of 0 to 65535.

string ma-name: Specifies that an MA is identified by a string, where the ma-name argument is string of 1 to 45 characters that can contain letters, numbers, and special characters such as grave accent (`), tilde (~), exclamation mark (!), at sign (@), number sign (#), dollar sign ($), percent (%), caret (^), ampersand (&), asterisk (*), brackets ({ }, ( ),[ ], < >), hyphen (-), underscore (_), plus (+), equal sign (=), vertical bar (|), colon (:), semicolon (;), quotation mark ('), comma (,), period (.), and slash (/).

vlan-based [ vlan-id ]: Specifies an MA that is identified by a VLAN ID, where the vlan-id argument is in the range of 1 to 4094. If you do not provide the vlan-id argument, the VLAN ID specified by vlan vlan-id is used. If the vlan vlan-id option is not provided, you must specify the vlan-id argument for the vlan-based [ vlan-id ] option.

ma-index index-value: Specifies an MA index in the range of 1 to 4294967295. If you do not specify this option, the system automatically assigns the smallest index number that is not in use. As a best practice, use the index automatically assigned by the system.

md md-name: Specifies the name of an MD. The md-name argument is a string of 1 to 43 characters that can contain letters, numbers, and special characters such as grave accent (`), tilde (~), exclamation mark (!), at sign (@), number sign (#), dollar sign ($), percent (%), caret (^), ampersand (&), asterisk (*), brackets ({ }, ( ),[ ], < >), hyphen (-), underscore (_), plus (+), equal sign (=), vertical bar (|), colon (:), semicolon (;), quotation mark (’), comma (,), period (.), and slash (/).

vlan vlan-id: Specifies the VLAN that the MA serves. The value range for the vlan-id argument is 1 to 4094.

xconnect-group group-name: Specifies the cross-connect group that the MA serves. The group-name argument is a case-sensitive string of 1 to 31 characters excluding hyphens (-).

connection connection-name: Specifies the cross-connect that the MA serves. The connection-name argument is a case-sensitive string of 1 to 20 characters excluding hyphens (-).

Usage guidelines

You must create the relevant MD before creating a service instance with the MD name.

Deleting a service instance also deletes the configurations related to that service instance.

Deleting a service instance not only removes the connection between the service instance and the relevant MA, but also deletes the MA.

When you create a service instance, follow these restrictions and guidelines:

· A service instance is indicated by an integer to represent an MA in an MD. An MA index uniquely identifies a specific MA in an MD. An MA index can be used in different MDs.

· With the vlan-based [ vlan-id ] or vlan vlan-id option, the command creates an MA carrying the VLAN attribute. If you do not specify the option, the command creates an MA carrying no VLAN attribute.

In an MPLS Layer 2 VPN, you must create the relevant cross-connect group and cross-connect before creating a service instance. For more information about cross-connect groups and cross-connects, see MPLS L2VPN in MPLS Configuration Guide.

The total number of characters of the ma-name and md-name arguments cannot exceed 45.

Examples

# Create a level-3 MD named test_md and create service instance 5, in which the MA is identified by a VLAN and serves VLAN 100.

<Sysname> system-view

[Sysname] cfd md test_md level 3

[Sysname] cfd service-instance 5 ma-id vlan-based md test_md vlan 100

# Create a level-4 MD named vpnmd and create service instance 10, in which the MA is identified by vpnma and serves cross-connect ac2pw in cross-connect group vpn1.

<Sysname> system-view

[Sysname] cfd md vpnmd level 4

[Sysname] cfd service-instance 10 ma-id string vpnma md vpnmd xconnect-group vpn1 connection ac2pw

Related commands

cfd md

cfd slm

Use cfd slm to configure short-period one-way loss measurement (LM).

Syntax

cfd slm service-instance instance-id mep mep-id { target-mac mac-address | target-mep target-mep-id } [ dot1p dot1p-value ] [ number number ] [ interval { interval | msec msec-interval } ]

Views

Any view

Predefined user roles

network-admin

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

mep mep-id: Specifies the source MEP by its ID in the range of 1 to 8191.

target-mac mac-address: Specifies the target MEP by its MAC address, which is in the format of H-H-H.

target-mep target-mep-id: Specifies the target MEP by its ID in the range of 1 to 8191.

dot1p dot1p-value: Specifies an 802.1p priority for LMM frames. The value range for the dot1p-value argument is 0 to 7. The default value is 7.

number number: Specifies the number of LMM frames to be sent. The value range for the number argument is 2 to 10, and the default is 5.

interval interval: Specifies the LMM frame sending interval, in seconds. The value takes 1, 10, 60, or 600. The default value is 1.

msec msec-interval: Specifies the LMM frame sending interval, in milliseconds. The value takes 100, 1000, 10000, 60000, or 600000. The default value is 1000.

Usage guidelines

Short-period LM sends a configurable number of LMM frames at a configuration interval. It measures the frame loss between the source and target MEPs after receiving LMR frames.

If the frame counting mode is dot1p-based, you must specify the dot1p dot1p-value option. If the frame counting mode is port-based, do not specify the dot1p dot1p-value option.

Two types of one-way LM are available: short-period one-way LM and continual one-way LM. They cannot be configured at the same time for one source MEP. If you have configured continual LM, you can configure short-period LM only after you disable continual LM. If you have configured short-period LM, you can configure continual LM only after the short-period LM ends.

Examples

# Configure short-period LM to measure the frame loss between source MEP 1101 and target MEP 2001 in service instance 1.

<Sysname> cfd slm service-instance 1 mep 1101 target-mep 2001

Reply from 0010-fc00-6512:

Far-end frame loss : 10 Far-end frame loss rate : 10.00%

Near-end frame loss: 20 Near-end frame loss rate: 20.00%

Reply from 0010-fc00-6512:

Far-end frame loss : 40 Far-end frame loss rate : 40.00%

Near-end frame loss: 40 Near-end frame loss rate: 40.00%

Reply from 0010-fc00-6512:

Far-end frame loss : 0 Far-end frame loss rate : 0.00%

Near-end frame loss: 10 Near-end frame loss rate: 10.00%

Reply from 0010-fc00-6512:

Far-end frame loss : 30 Far-end frame loss rate : 30.00%

Near-end frame loss: 30 Near-end frame loss rate: 30.00%

Average:

Far-end frame loss : 20 Far-end frame loss rate : 20.00%

Near-end frame loss: 25 Near-end frame loss rate: 25.00%

Packet statistics:

Sent LMMs: 5 Received: 5

Table 5 Command output

Field	Description
Reply from 0010-fc00-6512	LMR frames returned from the target MEP with MAC address 0010-FC00-6512.
Far-end frame loss	Number of lost frames on the target MEP.
Near-end frame loss	Number of lost frames on the source MEP.
Far-end frame loss rate	Frame loss ratio on the target MEP.
Near-end frame loss rate	Frame loss ratio on the source MEP.
Average	Average number of lost frames.
Sent LMMs	Number of sent LMM frames.
Received	Number of received LMR frames.
Lost	Number of lost LMR frames.

‌

Related commands

cfd slm continual

Use cfd slm continual to configure continual one-way LM.

Use undo slm continual to disable continual one-way LM.

Syntax

cfd slm continual service-instance instance-id mep mep-id { target-mac mac-address | target-mep target-mep-id } [ dot1p dot1p-value ] [ interval { interval | msec msec-interval }] [ period period ]

undo cfd slm continual service-instance instance-id mep mep-id

Default

Continual one-way LM is not configured.

Views

System view

Predefined user roles

network-admin

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

mep mep-id: Specifies the source MEP by its ID in the range of 1 to 8191.

target-mac mac-address: Specifies the target MEP by its MAC address, which is in the format of H-H-H. The MAC address cannot be a MAC address of a local MEP or a non-unicast MAC address.

target-mep target-mep-id: Specifies the target MEP by its ID in the range of 1 to 8191.

dot1p dot1p-value: Specifies the 802.1p priority of LMM frames to be sent. The value range for the dot1p-value argument is 0 to 7, and the default is 7. The larger the value, the higher the priority.

interval interval: Specifies the LMM frame sending interval, in seconds. The value takes 1, 10, 60, or 600. The default value is 1.

msec msec-interval: Specifies the LMM frame sending interval, in milliseconds. The value takes 100, 1000, 10000, 60000, or 600000. The default value is 1000.

period period: Specifies the statistics collection period in the range of 1 to 65535 seconds.

Usage guidelines

Continual LM continually sends LMM frames at a configurable interval. It measures the frame loss between the source and target MEPs after receiving LMR frames.

To modify continual LM settings for a source MEP, disable continual LM and then reconfigure the function for the source MEP.

To display the continual LM result, use the display cfd slm history command on the device where the source MEP resides.

Inward-facing MEPs do not support continual one-way LM.

Examples

# Configure continual LM to measure the frame loss between source MEP 1101 and target MEP 2001 in service instance 1.

<Sysname> system-view

[Sysname] cfd slm continual service-instance 1 mep 1101 target-mep 2001

Related commands

cfd slm

cfd slm threshold

display cfd slm history

cfd slm port-trigger up-delay

Use cfd slm port-trigger up-delay to enable automatic port recovery for continual LM and set the delay time for automatic recovery.

Use undo slm port-trigger up-delay to restore the default.

Syntax

cfd slm port-trigger up-delay delay

undo cfd slm port-trigger up-delay

Default

A port blocked in continual LM cannot come up automatically. The undo cfd port-trigger slm action command is required to bring up the port.

Views

System view

Predefined user roles

network-admin

Parameters

delay: Specifies the delay time for automatic recovery, in the range of 10 to 300 minutes.

Usage guidelines

After this command is configured, continual LM stops when port collaboration blocks a port. The port automatically comes up after the specified delay time, and continues with continual LM.

Examples

# Enable automatic port recovery for continual LM and set the delay time for automatic recovery to 10 minutes.

<Sysname> system-view

[Sysname] cfd slm port-trigger up-delay 10

Related commands

cfd port-trigger

cfd slm continual

cfd slm threshold

display cfd slm history

cfd slm threshold

Use cfd slm threshold to configure the lower limit and upper limit for continual LM.

Use undo cfd slm threshold to restore the default.

Syntax

cfd slm { far-end | near-end } threshold service-instance instance-id mep mep-id { lower-limit lower-limit | upper-limit upper-limit } *

undo cfd slm { far-end | near-end } threshold service-instance instance-id mep mep-id [ lower-limit | upper-limit ]

Default

The lower limit and upper limit for continual LM are 0 and 100%, respectively, for both the source and target MEPs.

Views

System view

Predefined user roles

network-admin

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

far-end: Configures the lower limit and upper limit for the target MEP.

near-end: Configures the lower limit and upper limit for the source MEP.

mep mep-id: Specifies a MEP by its ID in the range of 1 to 8191.

lower-limit lower-limit: Specifies the lower limit in percentage, in the range of 0 to 100. It can contain a maximum of 8 digits, including the dot (.), for example, 1.000001. The lower limit must be smaller than the upper limit.

upper-limit upper-limit: Specifies the upper limit in percentage, in the range of 0 to 100. It can contain a maximum of 8 digits, including the dot (.), for example, 1.000001.

Usage guidelines

This command takes effect only after you configure continual LM.

If the packet loss ratio for the source MEP or target MEP reaches or exceeds the upper limit for three consecutive times, the system displays a message about the situation.

If the packet loss ratios for both the source MEP and target MEP reach or fall below the lower limit for three consecutive times, the system displays a message about the situation.

Examples

# Configure the continual LM lower limit and upper limit as 0.2% and 0.8%, respectively, for source MEP 1101 in service instance 1.

<Sysname> system-view

[Sysname] cfd slm near-end threshold service-instance 1 mep 1101 lower-limit 0.2 upper-limit 0.8

Related commands

cfd port-trigger

cfd slm continual

display cfd slm history

cfd tst

Use cfd tst to configure short-period test (TST).

Syntax

cfd tst service-instance instance-id mep mep-id { target-mac mac-address | target-mep target-mep-id } [ number number ] [ length-of-test length ] [ pattern-of-test { all-zero | prbs } [ with-crc ] ]

Views

Any view

Predefined user roles

network-admin

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

mep mep-id: Specifies the source MEP by its ID in the range of 1 to 8191.

target-mac mac-address: Specifies the target MEP by its MAC address, which is in the format of H-H-H.

target-mep target-mep-id: Specifies the target MEP by its ID in the range of 1 to 8191.

number number: Specifies the number of sent TST frames. The value range for the number argument is 1 to 10, and the default is 5.

length-of-test length: Specifies the length of the Test TLV (Type/Length/Value) in the TST frame. The value range for the length argument is 4 to 1400, in bytes. The default value is 64.

pattern-of-test { all-zero | prbs } [ with-crc ]: Specifies the pattern of the Test TLV in the TST frame:

· all-zero (all-zero value without CRC-32), which is the default pattern.

· prbs (pseudo random bit sequence without CRC-32).

· all-zero with-crc (all-zero value with CRC-32).

· prbs with-crc (pseudo random bit sequence with CRC-32).

Usage guidelines

Short-period TST detects bit errors between the source and target MEPs by sending a configurable number of TST frames.

To view the TST test result, use the display cfd tst history command on the target MEP.

Short-period TST and continual TST cannot be configured at the same time for one source MEP. If you have configured continual TST, you can configure short-period TST only after you disable continual TST. If you have configured short-period TST, you can configure continual TST only after the short-period TST ends.

Examples

# Configure short-period TST to test the bit errors between source MEP 1101 and target MEP 1003 in service instance 1.

<Sysname> cfd tst service-instance 1 mep 1101 target-mep 1003

5 TSTs have been sent. Please check the result on the remote device.

Related commands

display cfd tst history

reset cfd tst

cfd tst continual

Use cfd tst continual to configure continual TST.

Use undo cfd tst continual to disable continual TST.

Syntax

cfd tst continual service-instance instance-id mep mep-id { target-mac mac-address | target-mep target-mep-id } [ length-of-test length ] [ pattern-of-test { all-zero | prbs } [ with-crc ] ] [ interval interval ]

undo cfd tst continual service-instance instance-id mep mep-id

Default

Continual TST is not configured.

Views

System view

Predefined user roles

network-admin

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

mep mep-id: Specifies the source MEP by its ID in the range of 1 to 8191.

target-mac mac-address: Specifies the target MEP by its MAC address, which is in the format of H-H-H.

target-mep target-mep-id: Specifies the target MEP by its ID in the range of 1 to 8191.

length-of-test length: Specifies the length of the Test TLV (Type/Length/Value) in the TST frame. The value range for the length argument is 4 to 1400 bytes, and the default is 64.

pattern-of-test { all-zero | prbs } [ with-crc ]: Specifies the pattern of the Test TLV in the TST frame:

· all-zero (all-zero value without CRC-32), which is the default pattern.

· prbs (pseudo random bit sequence without CRC-32).

· all-zero with-crc (all-zero value with CRC-32).

· prbs with-crc (pseudo random bit sequence with CRC-32).

interval interval: Specifies the interval for sending TST frames, in milliseconds. The value for the interval argument can be 100 or 1000, and the default is 1000.

Usage guidelines

Continual TST detects bit errors between the source and target MEPs by sending TST frames continuously.

To modify continual TST settings for a source MEP, you must disable continual TST and then reconfigure the function for the source MEP.

To display the continual TST result, use the display cfd tst history command on the device where the source MEP resides.

Inward-facing MEPs do not support this function.

Examples

# Configure continual TST to test the bit errors between source MEP 1101 and target MEP 2001 in service instance 1.

<Sysname> system-view

[Sysname] cfd tst continual service-instance 1 mep 1101 target-mep 2001

Related commands

cfd tst

cfd tst threshold

display cfd tst history

cfd tst threshold

Use cfd tst threshold to configure the lower limit and upper limit for continual TST.

Use undo cfd tst threshold to restore the default.

Syntax

cfd tst threshold service-instance instance-id mep mep-id { lower-limit lower-limit | upper-limit upper-limit } *

undo cfd tst threshold service-instance instance-id mep mep-id [ lower-limit | upper-limit ]

Default

The lower limit and upper limit for continual TST are 0 and 100%, respectively.

Views

System view

Predefined user roles

network-admin

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

mep mep-id: Specifies the source MEP by its ID in the range of 1 to 8191.

lower-limit lower-limit: Specifies the lower limit in percentage, in the range of 0 to 100. It can contain a maximum of 8 digits, including the dot (.).The lower limit must be smaller than the upper limit.

upper-limit upper-limit: Specifies the upper limit in percentage, in the range of 0 to 100. It can contain a maximum of 8 digits, including the dot (.).

Usage guidelines

This command takes effect only after you configure continual TST.

If the cfd port-trigger tst action { block | shutdown } command is configured, the following rules apply:

· If the bit error ratio reaches or exceeds the upper limit for three consecutive times, the port is blocked or shut down.

· If the bit error ratio reaches or falls below the lower limit for three consecutive times, the port is unblocked or brought up.

Examples

# Configure the continual TST lower limit and upper limit as 4.5% and 80.7%, respectively, for source MEP 1101 in service instance 1.

<Sysname> system-view

[Sysname] cfd tst threshold service-instance 1 mep 1101 lower-limit 4.5 upper-limit 80.7

Related commands

cfd port-trigger

cfd tst continual

display cfd tst history

display cfd ais

Use display cfd ais to display the AIS configuration and information on the specified MEP or all MEPs.

Syntax

display cfd ais [ service-instance instance-id [ mep mep-id ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767. If you do not specify this option, the command displays the AIS configuration and information for all service instances.

mep mep-id: Specifies a MEP by its ID in the range of 1 to 8191. If you do not specify this option, the command displays the AIS configuration and information for all MEPs.

Examples

# Display the AIS configuration and information for all the MEPs in all service instances.

<Sysname> display cfd ais

Service instance: 5

AIS level: 4 AIS period: 1s

MEP ID: 1

AIS condition: yes Time to enter the condition: 2019/01/22 10:43:57

AIS state machine: Previous state: NO_RECEIVE

Current state: RECEIVE

MEP ID: 2

AIS condition: yes Time to enter the condition: 2019/01/22 10:43:57

AIS state machine: Previous state: NO_RECEIVE

Current state: RECEIVE

Service instance: 20

AIS level: 3 AIS period: 60s

MEP ID: 10

AIS condition: yes Time to enter the condition: 2019/01/22 10:43:57

AIS state machine: Previous state: NO_RECEIVE

Current state: RECEIVE

Service instance: 100

AIS level: 6 AIS period: 1s

MEP ID: 20

AIS condition: no Time to enter the condition: 2019/01/22 11:40:01

AIS state machine: Previous state: IDLE

Current state: NO_RECEIVE

MEP ID: 50

AIS condition: no Time to enter the condition: -

AIS state machine: Previous state: IDLE

Current state: NO_RECEIVE

Table 6 Command output

Field	Description
Service instance	Service instance of the MEP.
AIS level	AIS frame transmission level.
AIS period	AIS frame transmission period.
AIS condition	AIS status: · yes—AIS is running. · no—AIS is not running.
Time to enter the condition	Time when the AIS status began. (- means AIS is enabled but the MEP does not receive any AIS frame.)
AIS state machine	AIS frame receiving state machine.
Previous state	Previous state: · IDLE—Not activated. · NO_RECEIVE—Activated. · RECEIVE—AIS frames are received.
Current state	Current state: · IDLE—Not activated. · NO_RECEIVE—Activated. · RECEIVE—AIS frames are received.

‌

display cfd dm one-way history

Use display cfd dm one-way history to display the one-way DM result.

Syntax

display cfd dm one-way history [ service-instance instance-id [ mep mep-id ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767. If you do not specify this option, the command displays the one-way DM results for all service instances.

mep mep-id: Specifies a MEP by its ID in the range of 1 to 8191. If you do not specify this option, the command displays the one-way DM results for all MEPs.

Usage guidelines

The one-way DM results for all inward-facing MEPs in a service instance are the same.

Examples

# Display the one-way DM results for all the MEPs in all service instances.

<Sysname> display cfd dm one-way history

Service instance: 1

MEP ID: 1003

Sent 1DM total number: 0

Received 1DM total number: 5

Frame delay: 11us 9us 10us 5us 5us

Delay average: 8us

Frame delay variation: 2us 1us 5us 0us

Variation average: 2us

MEP ID: 1004

Sent 1DM total number: 0

Received 1DM total number: 5

Frame delay: 10us 9us 11us 4us 6us

Delay average: 8us

Frame delay variation: 1us 2us 7us 2us

Variation average: 2us

Service instance: 2

No MEP exists in the service instance.

Service instance: 3

MEP ID: 1023

Sent 1DM total number: 5

Received 1DM total number: 10

Frame delay: 20us 9us 8us 7us 1us 5us 13us 17us 7us 5us

Delay average: 9us

Frame delay variation: 1us 1us 1us 6us 4us 8us 4us 10us 2us

Variation average: 4us

Service instance: 4

MEP ID: 1023

Sent 1DM total number: 77

Received 1DM total number: 0

Table 7 Command output

Field	Description
Service instance	Service instance of the MEP.
Sent 1DM total number	Number of sent 1DM frames.
Received 1DM total number	Number of received 1DM frames.
Delay average	Average frame delay.
Variation average	Average frame delay variation.

‌

Related commands

cfd dm one-way

cfd dm one-way continual

reset cfd dm one-way history

display cfd dm two-way history

Use display cfd dm two-way history to display the two-way DM result.

Syntax

display cfd dm two-way history [ service-instance instance-id [ mep mep-id ] ] [ number number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767. If you do not specify this option, the command displays the two-way DM results for all service instances.

mep mep-id: Specifies a MEP by its ID in the range of 1 to 8191. If you do not specify this option, the command displays the two-way DM results for all MEPs.

number number: Specifies the number of most recent two-way DM result entries to be displayed, in the range of 1 to 64. The default is 5.

Examples

# Display the two-way DM results for all the MEPs in all service instances.

<Sysname> display cfd dm two-way history

Service instance: 1

MEP ID: 1003

Send status: Testing

Test state: Active

Frame delay:

Reply from 0010-fc00-6512: 10us

Reply from 0010-fc00-6512: 9us

Reply from 0010-fc00-6512: 11us

Reply from 0010-fc00-6512: 5us

Average: 8us

Frame delay variation: 1us 2us 6us 0us

Average: 2us

Packet statistics:

Sent DMMs: 5 Received: 5 Lost: 0

MEP ID: 1004

Send status: Init

Test state: Inactive (cfd disable)

Frame delay:

Reply from 0010-fc00-6512: 10us

Reply from 0010-fc00-6512: 9us

Reply from 0010-fc00-6512: 11us

Reply from 0010-fc00-6512: 5us

Average: 8us

Frame delay variation: 1us 2us 6us 0us

Average: 2us

Packet statistics:

Sent DMMs: 5 Received: 5 Lost: 0

Service instance: 2

No MEP exists in the service instance.

Table 8 Command output

Field	Description
Send status	Two-way DM test status: · Testing—A two-way DM test is in progress. · Init—A two-way DM test is in initialization state and is about to start. · Stop—A two-way DM test stopped. If a two-way DM test has never been performed on a source MEP, this field displays a hyphen (-).
Test state	Test state: · Active. · Inactive (reason). Table 9 shows possible reasons for this state. · -—Unknown.
Reply from 0010-fc00-6512	DMR frames returned from the target MEP with MAC address 0010-FC00-6512.
Average	Average frame delay or average frame delay variation.
Sent DMMs	Number of sent DMM frames.
Received	Number of received DMR frames.
Lost	Number of lost DMR frames.

‌

Table 9 Reasons for the Inactive state

Reason	Description
cfd disable	CFD is disabled.
not support	The test type is not supported.
mep disable	The MEP is disabled.
target information error	The target MEP information is incorrect.
link down	The link state is down.
frame-count mode error	The frame counting mode setting is incorrect.
rmep failed	The CC fails.

Related commands

cfd dm two-way

cfd dm two-way continual

display cfd linktrace-reply

Use display cfd linktrace-reply to display information about the LTRs received by a MEP.

Syntax

display cfd linktrace-reply [ service-instance instance-id [ mep mep-id ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767. If you do not specify this option, the command displays the LTR information for all service instances.

mep mep-id: Specifies the ID of a MEP, in the range of 1 to 8191. If you do not specify this option, the command displays the LTR information for all MEPs.

Usage guidelines

This command displays only information about LTRs received by execution of the cfd linktrace command.

Examples

# Display the LTR information saved on all the MEPs in every service instance.

[Sysname] display cfd linktrace-reply

Service instance: 1 MEP ID: 1003

MAC address TTL Last MAC Relay action

0000-fc00-6505 63 0000-fc00-6504 MPDB

000f-e269-a852 62 0000-fc00-6505 FDB

0000-fc00-6508 61 000f-e269-a852 Hit

Service instance: 2 MEP ID: 1023

MAC address TTL Last MAC Relay action

0000-fc00-6508 61 000f-e269-a852 Hit

Table 10 Command output

Field	Description
Service instance	Service instance to which the MEPs that send LTMs belong.
MEP ID	ID of the MEP that sends LTMs.
MAC address	Source MAC address in the LTR.
TTL	TTL of the LTM when it passes the device.
Last MAC	MAC address of the last-hop device the LTM passes.
Relay action	Indicates whether the forwarding device found the destination MAC address in its MAC address table. When the standard version (IEEE 802.1ag) of CFD is used: · Hit—The current device is the destination device. · FDB—The forwarding device found the destination MAC address. · MPDB—The destination MAC address is not found, or the destination MAC address is found in the MEP or MIP database.

‌

Related commands

cfd linktrace

display cfd linktrace-reply auto-detection

Use display cfd linktrace-reply auto-detection to display information about the LTRs received as responses to the automatically sent LTMs.

Syntax

display cfd linktrace-reply auto-detection [ size size-value ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

size size-value: Specifies the times of recent auto-detections, in the range of 1 to 100. If you do not specify this option, the command displays all information in the buffer.

Usage guidelines

This command displays only information about LTRs received by execution of the cfd linktrace auto-detection command.

Examples

# Display the contents of the LTRs received as responses to the LTMs automatically sent.

<Sysname> display cfd linktrace-reply auto-detection

Service instance: 1 MEP ID: 1003 Time: 2019/05/22 10:43:57

Target MEP ID: 2005 TTL: 64

MAC address TTL Last MAC Relay action

0000-fc00-6505 63 0000-fc00-6504 MPDB

000f-e269-a852 62 0000-fc00-6505 FDB

0000-fc00-6508 61 000f-e269-a852 Hit

Service instance: 2 MEP ID: 1023 Time: 2019/05/22 10:44:06

Target MEP ID: 2025 TTL: 64

MAC address TTL Last MAC Relay action

0000-fc00-6508 61 000f-e269-a852 Hit

Table 11 Command output

Field	Description
Service instance	Service instance to which the MEPs that sent LTMs belong.
MEP ID	ID of the MEP that sends LTMs.
Time	Time of the LTMs automatically sent.
Target MEP ID	ID of the target MEP.
TTL	Initial TTL of the automatically sent LTMs.
MAC address	Source MAC address in the LTRs.
TTL	TTL of the LTM when it passes the device.
Last MAC	MAC address of the last-hop device the LTM passes.
Relay action	Indicates whether the forwarding device found the destination MAC address in its MAC address table. When the standard version (IEEE 802.1ag) of CFD is used: · Hit—The current device is the destination device. · FDB—The forwarding device found the destination MAC address. · MPDB—The destination MAC address is not found, or the destination MAC address is found in the MEP or MIP database.

‌

Related commands

cfd linktrace auto-detection

display cfd md

Use display cfd md to display the MD configuration information.

Syntax

display cfd md

Views

Any view

Predefined user roles

network-admin

network-operator

Examples

# Display the MD configuration information.

<Sysname> display cfd md

CFD is enabled.

Maintenance domains configured: 4 in total

Level Index Maintenance domain MD format MD ID

0 1 md_0 CHARSTRING md_0

1 2 md_1 DNS dns1

2 3 md_2 MAC 0001-00

01-0001-1

3 4 md_3 NONE Without

Table 12 Command output

Field	Description
Maintenance domains configured	Number of MDs configured.
Level	Level of MD.
Index	MD index.
Maintenance domain	Name of MD.
MD format	MD name format: · CHARSTRING—Character string. · DNS—DNS name. · MAC—MAC address and an integer. · NONE—No MD name is carried.
MD ID	MD ID value: · A character string if the MD format is CHARSTRING. · A DNS name if the MD format is DNS. · A MAC address-subnumber if the MD format is MAC. · No ID if the MD format is NONE.

‌

display cfd mep

Use display cfd mep to display the attribute and operating information for a MEP.

Syntax

display cfd mep mep-id service-instance instance-id

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

mep mep-id: Specifies a MEP by its ID in the range of 1 to 8191.

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

Examples

# In an Ethernet network, display the attribute and operating information for MEP 50 in service instance 1.

<Sysname> display cfd mep 50 service-instance 1

Interface: GigabitEthernet0/0/2

Maintenance domain: md_0

Maintenance domain index: 1

Maintenance association: ma_0

Maintenance association index: 1

Level: 0 VLAN: 1 Direction: Outbound

Current state: Active CCM send: Enabled

FNG state: FNG_DEFECT_REPORTED

CCM:

Current state: CCI_WAITING

Interval: 1s SendCCM: 12018 ReceiveCCM: 24036

Loopback:

NextSeqNumber: 8877

SendLBR: 0 ReceiveInOrderLBR: 0 ReceiveOutOrderLBR: 0

SendLBM: 0 ReceiveLBM: 0

Linktrace:

NextSeqNumber: 8877

SendLTR: 0 ReceiveLTM: 0

SendLTM: 0 ReceiveLTR: 0

No CCM received from some remote MEPs.

One or more streams of error CCMs is received. The last received CCM:

Maintenance domain: (Without ID)

Maintenance association: matest1

MEP ID: 5 Sequence Number:0x50A

MAC Address: 0011-2233-4402

Received Time: 2019/03/06 13:01:34

One or more streams of cross-connect CCMs is received. The last received CCM:

Maintenance domain: mdtest1

Maintenance association:matest1

MEP ID: 6 Sequence Number:0x63A

MAC Address: 0011-2233-4401

Received Time: 2019/03/06 13:01:34

Some other MEPs are transmitting the RDI bit.

# In an MPLS Layer 2 VPN, display the attribute and operating information of MEP 50 in service instance 1.

<Sysname> display cfd mep 50 service-instance 1

Interface: GigabitEthernet0/0/2.1

Maintenance domain: md_0

Maintenance domain index: 1

Maintenance association: ma_0

Maintenance association index: 1

Level: 0 Direction: Inbound

Current state: Active CCM send: Enabled

FNG state: FNG_DEFECT_REPORTED

CCM:

Current state: CCI_WAITING

Interval: 1s SendCCM: 12018 ReceiveCCM: 24036

Loopback:

NextSeqNumber: 8877

SendLBR: 0 ReceiveInOrderLBR: 0 ReceiveOutOrderLBR: 0

SendLBM: 0 ReceiveLBM: 0

Linktrace:

NextSeqNumber: 8877

SendLTR: 0 ReceiveLTM: 0

SendLTM: 0 ReceiveLTR: 0

No CCM received from some remote MEPs.

Table 13 Command output

Field	Description
Interface	Interface on which the MEP is configured.
Maintenance domain	MD to which the MEP belongs. (If the MD does not have a name, this field is displayed as Without ID.)
Maintenance domain index	Index of the MD to which the MEP belongs..
Maintenance association	MA to which the MEP belongs.
Maintenance association index	Index of the MA to which the MEP belongs.
Level	Level of the MD.
VLAN	VLAN to which the MA belongs.
EthSrv	Ethernet service instance for the MEP.
Direction	Direction of the MEPs.
Current state	State of MEP: · Active. · Inactive.
CCM send	Whether the MEP sends CCM.
FNG state	State of FNG (Fault Notification Generator): · FNG_RESET—A fault has been cleared. · FNG_DEFECT—A fault has been detected. · FNG_REPORT_DEFECT—Report a fault. · FNG_DEFECT_REPORTED—A fault has been reported. · FNG_DEFECT_CLEARING—A fault is being cleared. If this field is not supported, a hyphen (-) is displayed.
CCM	Information related to CCM.
Current state	State of CCMs sent: · CCI_IDLE—Initial state. · CCI_WAITING—Sending state. If this field is not supported, a hyphen (-) is displayed.
Interval	Interval to send CCM. Not supported means the MEP does not support CCM sending.
SendCCM	Number of CCMs that have been sent by the MEPs. If this field is not supported, a hyphen (-) is displayed.
ReceiveCCM	Number of CCMs that have been received by the MEPs. If this field is not supported, a hyphen (-) is displayed.
Loopback	Information related to Loopback.
NextSeqNumber	Sequence number of the next LBM to be sent.
SendLBR	Number of LBRs that have been sent. If the MEP is inward-facing, the number of LBRs will not be counted.
ReceiveInOrderLBR	Number of LBRs received in correct sequence.
ReceiveOutOrderLBR	Number of LBRs received out of order.
SendLBM	Number of LBMs that have been sent. If the MEP is inward-facing, the number of LBMs will not be counted.
ReceiveLBM	Number of LBMs that have been received.
Linktrace	Information related to linktrace.
NextSeqNumber	Sequence number of the next LTM to be sent.
SendLTR	Number of LTRs sent. If the MEP is inward-facing, the number of LTRs will not be counted.
ReceiveLTM	Number of LTMs received.
SendLTM	Number of LTMs that have been sent. If the MEP is inward-facing, the number of LTMs will not be counted.
ReceiveLTR	Number of LTRs that have been received.
No CCM received from some remote MEPs.	Failure to receive CCMs from some remote MEPs. (This information is displayed only when some CCMs are lost.)
One or more streams of error CCMs is received. The last received CCM:	Display the content of the last error CCM when one or more error CCMs are received. (This information is displayed only when error CCMs are received.)
Maintenance domain	MD of the last error CCM. If this field is not supported, a hyphen (-) is displayed.
Maintenance association	MA of the last error CCM. If this field is not supported, a hyphen (-) is displayed.
MEP	ID of the MEP that sent the last error CCM. If this field is not supported, a hyphen (-) is displayed.
Sequence Number	Sequence number of the last error CCM. If this field is not supported, a hyphen (-) is displayed.
Received Time	Time when the last error CCM is received. If this field is not supported, a hyphen (-) is displayed.
One or more streams of cross-connect CCMs is received. The last received CCM:	Cross-connect CCMs are received, and the content of the last cross-connect CCM is displayed. (This information is displayed only when cross-connect CCMs are received.)
Some other MEPs are transmitting the RDI bit.	CCMs with the RDI flag bits set are received from other MEPs. (This information is displayed only when this type of CCMs are received.)

‌

display cfd meplist

Use display cfd meplist to display the MEP list in a service instance.

Syntax

display cfd meplist [ service-instance instance-id ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767. If you do not specify this option, the command displays MEP lists in all service instances.

Examples

# Display the MEP list in service instance 5.

<Sysname> display cfd meplist service-instance 5

Service instance: 5

MEP list: 1 to 20, 30, 50.

display cfd mp

Use display cfd mp to display the MP information.

Syntax

display cfd mp [ 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 this option, the command displays MP information for all interfaces.

Usage guidelines

The output is arranged by interface name. On an interface, the output shows MPs that serve VLANs, and then shows MPs that do not serve any VLANs. The MPs that serve VLANs are displayed in the ascending VLAN ID order. Within the same VLAN, the output is in the order of MIPs and MEPs (from high to low level). The MEPs that do not serve any VLANs are displayed by level (from high to low).

Examples

# Display the MP information on all interfaces.

<Sysname> display cfd mp

Interface GigabitEthernet0/0/1 VLAN 100

MIP Level: 1 Service instance: 101

Maintenance domain: md_1

Maintenance domain index: 2

Maintenance association: ma_1

Maintenance association index: 2

MEP ID: 100 Level: 0 Service instance: 100 Direction: Outbound

Maintenance domain: md_0

Maintenance domain index: 1

Maintenance association: ma_0

Maintenance association index: 1

Interface GigabitEthernet0/0/2 VLAN NONE

MEP ID: 101 Level: 2 Service instance: 102 Direction: Inbound

Maintenance domain: md_2

Maintenance domain index: 3

Maintenance association: ma_2

Maintenance association index: 3

Table 14 Command output

Field	Description
Interface GigabitEthernet0/0/1 VLAN 100	MP configuration of VLAN 100 on GigabitEthernet 0/0/1.
Interface GigabitEthernet0/0/2 VLAN NONE	Configuration of the MP that does not serve any VLAN.
MIP	A MIP in the MP.
Level	MD level to which the MP belongs.
Service instance	Service instance to which the MP belongs.
Maintenance domain	MD to which the MP belongs.
Maintenance domain index	Index of the MD to which the MP belongs.
Maintenance association	MA to which the MP belongs.
Maintenance association index	Index of the MA to which the MP belongs.
Direction	Direction of the MEP, Inbound or Outbound.

‌

display cfd remote-mep

Use display cfd remote-mep to display information about a remote MEP.

Syntax

display cfd remote-mep service-instance instance-id mep mep-id

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767.

mep mep-id: Specifies a MEP by its ID in the range of 1 to 8191.

Examples

# Display remote MEP information for MEP 10 in service instance 4.

<Sysname> display cfd remote-mep service-instance 4 mep 10

MEP ID MAC address State Time MAC status

20 00e0-fc00-6565 OK 2019/03/06 02:36:38 UP

30 00e0-fc27-6502 OK 2019/03/06 02:36:38 DOWN

40 00e0-fc00-6510 FAILED 2019/03/06 02:36:39 DOWN

50 00e0-fc52-baa0 OK 2019/03/06 02:36:44 DOWN

60 0010-fc00-6502 OK 2019/03/06 02:36:42 DOWN

Table 15 Command output

Field	Description
MEP ID	ID of the remote MED.
MAC address	MAC address of the remote MEP device. If this field is not supported, a hyphen (-) is displayed.
State	Running state of the remote MEP: · OK. · FAILED.
Time	Time when the remote MEP entered the FAILED or OK state for the last time. If this field is not supported, a hyphen (-) is displayed.
MAC status	State of the interface indicated by the last CCM received from the remote MEP: · UP—The interface is ready to pass packets. · DOWN—The interface cannot pass packets. · TESTING—The interface is in some test mode. · UNKNOWN—The interface status cannot be determined. · DORMANT—The interface is not in a state to pass packets. Instead, it is in a pending state, waiting for some external event. · NOT-PRESENT—Some component of the interface is missing. · LLD—The interface is down due to state of the lower layer interfaces. If this field is not supported, a hyphen (-) is displayed.

‌

display cfd service-instance

Use display cfd service-instance to display the configuration information of service instances.

Syntax

display cfd service-instance [ instance-id ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

instance-id: Specifies a service instance by its ID in the range of 1 to 32767. If you do not specify this argument, the command displays configuration information for all service instances.

Examples

# In an Ethernet network, display the configuration information of all service instances.

<Sysname> display cfd service-instance

Service instances configured (2 in total):

Service instance 5:

Maintenance domain: md_5

Maintenance domain index: 5

Maintenance association: ma_5

Maintenance association index: 5

Level: 5 VLAN: 5 MIP rule: NONE CCM interval: 1s

Direction: Inbound

MEP ID: 730 Interface: GigabitEthernet0/0/1

Service instance 6:

Maintenance domain: (Without ID)

Maintenance domain index: 6

Maintenance association: ma_6

Maintenance association index: 6

Level: 6 VLAN: 6 MIP rule: NONE CCM interval: 1s

Direction: Outbound

MEP ID: 731 Interface: GigabitEthernet0/0/2

# In an MPLS Layer 2 VPN, display the configuration information of all service instances.

Service instances configured (2 in total):

Service instance 5:

Maintenance domain: md_5

Maintenance domain index: 5

Maintenance association: ma_5

Maintenance association index: 5

Xconnect-group: vpn1

Xconnection: ldp1

Level: 5 MIP rule: NONE CCM interval: 1s

Direction: Inbound

MEP ID: 730 Interface: GigabitEthernet0/0/1

Service instance 6:

Maintenance domain: (Without ID)

Maintenance domain index: 6

Maintenance association: ma_6

Maintenance association index: 6

Xconnect-group: vpn2

Xconnection: ldp2

Level: 6 MIP rule: NONE CCM interval: 1s

Direction: Inbound

MEP ID: 731 Interface: GigabitEthernet0/0/2

Table 16 Command output

Field	Description
Service instances are configured.	Number of service instances configured.
Service instance	Service instance ID.
Maintenance domain	MD of the service instance. (If the MD does not have a name, this field displays Without ID.)
Maintenance domain index	Index of the MD to which the service instance belong.
Maintenance association:	MA of the service instance.
Maintenance association index	Index of the MA to which the service instance belong.
Xconnect-group	Cross-connect group name.
Xconnection	Cross-connect name.
Level	MD level.
VLAN	VLAN to which the MA belongs.
MIP rule	MIP generation rules configured on the service instance.
CCM interval	Interval to send CCMs.
Direction	Direction of the MEPs configured on the service instance.
MEP ID	ID of MEPs configured on the service instance.
Interface	Interface of the MEP configured on the service instance.

‌

display cfd slm history

Use display cfd slm history to display the LM result.

Syntax

display cfd slm history [ service-instance instance-id [ mep mep-id ] ] [ number number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767. If you do not specify this option, the command displays the LM results for all service instances.

mep mep-id: Specifies a MEP by its ID in the range of 1 to 8191. If you do not specify this option, the command displays the LM results for all MEPs.

number number: Specifies the number of most recent LM result entries to be displayed, in the range of 1 to 64. The default is 5.

Examples

# Display the LM results for MEP 1101 in service instance 1.

<Sysname> display cfd slm history service-instance 1 mep 1101

Service instance: 1

MEP ID: 1101

Send status: Testing

Test state: Active

Reply from 0010-fc00-6512:

Far-end frame loss : 10 Far-end frame loss rate : 10.00%

Near-end frame loss: 20 Near-end frame loss rate: 20.00%

Reply from 0010-fc00-6512:

Far-end frame loss : 40 Far-end frame loss rate : 40.00%

Near-end frame loss: 40 Near-end frame loss rate: 40.00%

Reply from 0010-fc00-6512:

Far-end frame loss : 0 Far-end frame loss rate : 0.00%

Near-end frame loss: 10 Near-end frame loss rate: 10.00%

Reply from 0010-fc00-6512:

Far-end frame loss : 30 Far-end frame loss rate : 30.00%

Near-end frame loss: 30 Near-end frame loss rate: 30.00%

Reply from 0010-fc00-6512:

Far-end frame loss : 20 Far-end frame loss rate : 20.00%

Near-end frame loss: 25 Near-end frame loss rate: 25.00%

Average:

Far-end frame loss : 20 Far-end frame loss rate : 20.00%

Near-end frame loss: 25 Near-end frame loss rate: 25.00%

Packet statistics:

Sent LMMs: 100 Received: 100

Table 17 Command output

Field	Description
Send status	LM test status: · Testing—An LM test is in progress. · Init—An LM test is in initialization state and is about to start. · Stop—An LM test stopped. If an LM test has never been performed on a source MEP, this field displays a hyphen (-).
Test state	Test state: · Active. · Inactive (reason). Table 9 shows possible reasons for this state. · -—Unknown.
Reply from 0010-fc00-6512	LMR frames returned from the target MEP with MAC address 0010-FC00-6512.
Far-end frame loss	Number of lost frames on the target MEP.
Near-end frame loss	Number of lost frames on the source MEP.
Far-end frame loss rate	Frame loss ratio on the target MEP.
Near-end frame loss rate	Frame loss ratio on the source MEP.
Average	Average number of lost frames.
Sent LMMs	Number of sent LMM frames.
Received	Number of received LMR frames.

‌

Related commands

cfd slm

cfd slm continual

display cfd status

Use display cfd status to display the CFD and AIS status.

Syntax

display cfd status

Views

Any view

Predefined user roles

network-admin

network-operator

Examples

# Display the CFD and AIS status.

<Sysname> display cfd status

CFD is enabled.

AIS is disabled.

display cfd tst history

Use display cfd tst history to display the TST result.

Syntax

display cfd tst history [ service-instance instance-id [ mep mep-id ] ] [ number number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767. If you do not specify this option, the command displays the TST results for all service instances.

mep mep-id: Specifies a MEP by its ID in the range of 1 to 8191. If you do not specify this option, the command displays the TST results for all MEPs.

number number: Specifies the number of most recent TST result entries to be displayed, in the range of 1 to 64. The default is 5.

Usage guidelines

The TST DM results for all inward-facing MEPs in a service instance are the same.

Examples

# Display the TST results for all the MEPs in all service instances.

<Sysname> display cfd tst history

Service instance: 1

MEP ID: 1003

Send status: Testing

Test state: Active

Received from 0010-fc00-6510, Bit True, sequence number 0

Received from 0010-fc00-6510, Bit True, sequence number 1

Received from 0010-fc00-6510, Bit True, sequence number 2

Received from 0010-fc00-6510, Bit True, sequence number 3

Received from 0010-fc00-6510, Bit True, sequence number 4

Sent TST total number: 7

Received TST total number: 5

Received bit error TST number: 0

Percentage of error messages: 0.00%

Table 18 Command output

Field	Description
Service instance	Service instance of the MEP.
Send status	TST test status: · Testing—A TST test is in progress. · Init—A TST test is in initialization state and is about to start. · Stop—A TST test stopped. If a TST test has never been performed on the source MEP, this field displays a hyphen (-).
Test state	Test state: · Active. · Inactive (reason). Table 9 shows possible reasons for this state. · -—Unknown.
Received from 0010-fc00-6510, Bit True, sequence number 0	TST frame with sequence number 0 was received from the MEP with MAC address 0010-FC00-6510: · Bit True—No bit error occurred. · Bit False—Bit errors occurred.
Sent TST total number	Number of sent TST frames.
Received TST total number	Number of received TST frames.
Received bit error TST number	Number of received TST frames with bit errors.
Percentage of error messages	Percentage of received TST frames with bit errors.

‌

Related commands

cfd tst

cfd tst continual

reset cfd tst

reset cfd dm one-way history

Use reset cfd dm one-way history to clear the one-way DM result.

Syntax

reset cfd dm one-way history [ service-instance instance-id [ mep mep-id ] ]

Views

User view

Predefined user roles

network-admin

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767. If you do not specify this option, the command clears the one-way DM results for all service instances.

mep mep-id: Specifies a MEP by its ID in the range of 1 to 8191. If you do not specify this option, the command clears the one-way DM results for all MEPs.

Usage guidelines

Clearing the one-way DM result for an inward-facing MEP clears all one-way DM results for the service instance where the inward-facing MEP resides.

Examples

# Clear the one-way DM results for all MEPs in all service instances.

<Sysname> reset cfd dm one-way history

Related commands

cfd dm one-way

display cfd dm one-way history

reset cfd tst

Use reset cfd tst to clear the TST result.

Syntax

reset cfd tst [ service-instance instance-id [ mep mep-id ] ]

Views

User view

Predefined user roles

network-admin

Parameters

service-instance instance-id: Specifies a service instance by its ID in the range of 1 to 32767. If you do not specify this option, the command clears the TST results for all service instances.

mep mep-id: Specifies a MEP by its ID in the range of 1 to 8191. If you do not specify this option, the command clears the TST results for all MEPs.

Usage guidelines

Clearing the TST result for an inward-facing MEP clears all TST results for the service instance where the inward-facing MEP resides.

Examples

# Clear the TST results for all MEPs in all service instances.

<Sysname> reset cfd tst

Related commands

cfd tst

display cfd tst

20-High Availability Command Reference

CFD commands

cfd linktrace

cfd md

cfd mep

cfd meplist

cfd service-instance

display cfd tst history

Cloud & AI

InterConnect

Intelligent Terminal Products

Product Support Services

Technical Service Solutions

Resource Center

Policy

Online Help

Become a Partner

Partner Resources

Partner Business Management

Company Information

News & Events

Contact Us