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Command Reference

CloudEngine 8800, 7800, 6800, and 5800 V200R002C50

This document describes all the configuration commands of the device, including the command function, syntax, parameters, views, default level, usage guidelines, examples, and related commands.
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M-LAG Commands

M-LAG Commands

NOTE:

The CE6880EI does not support M-LAG.

authentication-mode (DFS group view)

Function

The authentication-mode command specifies the authentication mode and password of DFS group synchronization packets.

The undo authentication-mode command cancels the configuration.

By default, the authentication mode of DFS group synchronization packets is not configured.

Format

authentication-mode hmac-sha256 password password

undo authentication-mode

Parameters

Parameter Description Value
hmac-sha256 Indicates the HMAC-SHA256 authentication mode. -
password password

Specifies the authentication password character string.

The value is a string of case-sensitive characters without spaces. The password contains 6 to 16 plain-text characters or 20 to 432 cipher-text characters. If the character string is quoted by double quotation marks, the character string can contain spaces.

Views

DFS group view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

Generally, the device does not encapsulate authentication information in DFS group synchronization packets or check received packets. When malicious packets are sent to attack a network, information on the entire network may be intercepted. In this case, authentication of a DFS group needs to be configured to improve network security. After authentication of a DFS group is configured, the device can encapsulate authentication information in DFS group synchronization packets to check validity of the synchronization packets sent by the remote device.

Precautions

Devices of the DFS group must be configured with the same authentication password.

Example

# Configure the authentication mode of DFS group synchronization packets and set the password to Huawei@1234.

<HUAWEI> system-view
[~HUAWEI] dfs-group 1
[*HUAWEI-dfs-group-1] authentication-mode hmac-sha256 password Huawei@1234
Related Topics

dfs-group

Function

The dfs-group command creates a Dynamic Fabric Service (DFS) group and displays its view, or displays the view of an existing DFS group.

The undo dfs-group command deletes a DFS group.

By default, no DFS group is created.

Format

dfs-group dfs-group-id

undo dfs-group dfs-group-id

Parameters

Parameter

Description

Value

dfs-group-id

Specifies the ID of a DFS group.

The value must be 1.

Views

System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

A DFS group is used for device pairing. Before configuring M-LAG on a dual-homing network, you must run the dfs-group command to create a DFS group.

Precautions

Only one DFS group can be created.

Example

# Create DFS group 1.

<HUAWEI> system-view
[~HUAWEI] dfs-group 1
[*HUAWEI-dfs-group-1] 

dfs-group m-lag

Function

The dfs-group m-lag command binds a user-side interface to a DFS group.

The undo dfs-group m-lag command unbinds a user-side interface from a DFS group.

By default, no user-side interface is bound to a DFS group.

Format

dfs-group dfs-group-id m-lag m-lag-id

undo dfs-group [ dfs-group-id [ m-lag m-lag-id ] ]

Parameters

Parameter

Description

Value

dfs-group-id

Specifies the ID of a DFS group.

The value must be 1.

m-lag-id

Specifies the ID of an M-LAG.

The value is an integer that ranges from 1 to 2048.

Views

Eth-Trunk interface view

Default Level

2: Configuration level

Usage Guidelines

Ensure that the Eth-Trunk bound to a DFS group connects to a CE that needs to be dual-homed to a network and the PEs at both ends use the same value of m-lag-id.

Example

# Bind Eth-Trunk 2 to DFS group 1 and set the value of m-lag-id to 3.

<HUAWEI> system-view
[~HUAWEI] interface eth-trunk 2
[*HUAWEI-Eth-Trunk2] dfs-group 1 m-lag 3

display dfs-group

Function

The display dfs-group command displays M-LAG information.

Format

display dfs-group dfs-group-id [ node node-id m-lag [ brief ] | peer-link ]

display dfs-group dfs-group-id m-lag

Parameters

Parameter

Description

Value

dfs-group-id

Specifies the ID of a DFS group.

The value must be 1.

node node-id

Specifies the ID of a node.

The value is 1 or 2.

m-lag

Displays M-LAG information.

-

brief

Displays the M-LAG summary.

-

peer-link

Displays peer link information.

-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

The display dfs-group command displays information about all M-LAG nodes, including information about a user-side interface on a node and pairing information.

Example

<HUAWEI> display dfs-group 1
  Dfs-Group ID   : 1 
  Priority       : 100 
  UDP Port       : -   
  Address        : -   
  System ID      : 0025-9e95-7c21
  SysName        : CE6850-9130  
  Up-delay       : 120           
  Switch-delay   : 0             
 

# Display information about the M-LAG with DFS group 1.

<HUAWEI> display dfs-group 1 m-lag
*                : Local node
Heart beat state : OK
Node 1 *
  Dfs-Group ID   : 1
  Priority       : 150
  Address        : nickname 100
  State          : Master
  Causation      : -
  System ID      : 0025-9e95-7c31
  SysName        : CE6850-9130
  Version        : V200R001C00SPC600
  Device Type    : CE6850
Node 2
  Dfs-Group ID   : 1
  Priority       : 120
  Address        : nickname 200
  State          : Backup
  Causation      : -
  System ID      : 0025-9e95-7c11
  SysName        : CE6850-9130
  Version        : V200R001C00SPC600
  Device Type    : CE6850
Table 7-30  Description of the display dfs-group command output

Item

Description

*

Local node.

Heart beat state

Heartbeat status.
  • OK: The heartbeat status is online.
  • Lost: The heartbeat status is offline.

Dfs-Group ID

ID of the DFS group.

UDP Port

UDP port number.

Priority

Priority of the DFS group.

Address

Nick name or IP address bound to the DFS group.

State

Device status:
  • Master
  • Backup

Causation

Failure cause:
  • -: The negotiation is successful.
  • NOPEERLINK: The peer-link is not configured.
  • NOADDRESS: The address is not bound.
  • SAMEMAC: The source MAC address of protocol packets is the same.
  • TYPEMISMATCH: The bound address type is not matched.
  • TIMEOUT: Protocol packet receiving times out, that is, protocol packets are not received.
  • PEERLINKDOWN: The peer-link status is Down.
  • DETECT: Hello packets from the remote end can be received but packets about remote device information cannot be received.
  • CMTDOWN: The TRILL CMT status is Down.
  • AUTHENTICATION FAILED: Device authentication for DFS group pairing fails.

System ID

System MAC address.

SysName

Device name.

Up-delay

Delay for the M-LAG member interface to report the Up event.

Switch-delay

Delay in switching the LACP M-LAG system ID.

Version

Device version.

Device Type

Device series.

# Display information about the M-LAG with DFS group 1 and node 1.

<HUAWEI> display dfs-group 1 node 1 m-lag brief
* - Local node 

M-Lag ID     Interface      Port State    Status                                                                                     
       1     Eth-Trunk 10   Up            active(*)-active  
Table 7-31  Description of the display dfs-group command output

Item

Description

* - Local node

Local node.

M-Lag ID

ID of the M-LAG.

Interface

User-side Eth-Trunk:

Port State

Status of the interface:
  • Down
  • Up

Status

Whether traffic can be forwarded:
  • active: Traffic can be forwarded.
  • inactive: Traffic cannot be forwarded.

display dfs-group m-lag check stp

Function

The display dfs-group m-lag check stp command checks whether the STP configurations on both ends of the M-LAG are consistent.

Format

display dfs-group dfs-group-id m-lag check stp

Parameters

Parameter

Description

Value

dfs-group-id

Specifies the ID of a DFS group.

The value must be 1.

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

When VSTP is configured in M-LAG networking, you can run this command to check whether the STP configurations on both ends of the M-LAG are consistent. If parameters are inconsistent, the calculation results on both ends may be different. As a result, network forwarding fails or network flapping occurs. Determine and modify the configurations to ensure that the STP configurations on both ends are consistent.

Example

# Check whether the STP configurations on both ends of the M-LAG are consistent.

<HUAWEI> display dfs-group 1 m-lag check stp
*                   : This option must be kept consistent on the local and remote ends.
                      Local     Remote    Result
*Protocal Status    : Enabled   Enabled   OK
 Priority           : 32768     32768     OK
*Foward Delay (s)   : 15        15        OK
*Hello Time (s)     : 2         2         OK
*Max Age (s)        : 20        20        OK
Table 7-32  Description of the display dfs-group m-lag check stp command output

Item

Description

*

Parameter that must be consistent on both ends.

Protocal Status

STP status:
  • Enabled
  • Disabled

Priority

Priority of the device in the specified spanning tree.

Foward Delay (s)

Value of Forward Delay, in seconds.

Hello Time (s)

Value of the Hello timer, in seconds.

Max Age (s)

Value of Max Age, in seconds.

Local

Local end.

Remote

Remote end.

Result

Whether the results on both ends are consistent.
  • OK: The results on both ends are consistent.
  • Fail: The results on both ends are inconsistent.
  • -: The results on both ends are inconsistent. To prevent network flapping when faults occur, you are advised to use consistent parameters at both ends.

display dfs-group stp

Function

The display dfs-group stp command displays STP information about all nodes in a DFS group.

Format

display dfs-group dfs-group-id node node-id stp { brief | global | m-lag m-lag-id [ brief ] }

Parameters

Parameter

Description

Value

dfs-group-id

Specifies the ID of a DFS group.

The value must be 1.

node node-id

Specifies the ID of a node.

The value is 1 or 2.

brief

Displays brief information.

-

global

Displays global information.

-

m-lag m-lag-id

Specifies the ID of an M-LAG.

The value is an integer that ranges from 1 to 2048.

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

You can run the display dfs-group stp command to check STP information about all nodes in a DFS group or STP information about an M-LAG user-side interface.

Example

# Display global information about node 1 in DFS group 1.

<HUAWEI> display dfs-group 1 node 1 stp global
Protocol Status            :Enabled
Bpdu-filter default        :Disabled
Tc-protection              :Enabled
Tc-protection threshold    :1
Tc-protection interval     :2s
Edged port default         :Disabled
Pathcost-standard          :Dot1T
Timer-factor               :3
Transmit-limit             :6
CIST Global Information:
  BPDU-Protection     :Disabled
  STP Converge Mode   :Normal

# Display brief information about node 1 in DFS group 1 of M-LAG 1.

<HUAWEI> display dfs-group 1 node 1 stp m-lag 1 brief
M-Lag ID     Interface      Port Protocol
       1     Eth-Trunk 47   Enabled
Table 7-33  Description of the display dfs-group stp command output

Item

Description

Protocol Status

Spanning Tree Protocol (STP) status:
  • Enabled
  • Disabled

Bpdu-filter default

Whether the function of configuring device interfaces as Bridge Protocol Data Unit (BPDU) filter interfaces is enabled:
  • Enabled
  • Disabled

Tc-protection

Topology change (TC) protection status:
  • Enabled
  • Disabled

Tc-protection threshold

Threshold of TC packets that the device can handle and immediately refresh forwarding entries in a given period.

Tc-protection interval

Time the device takes to handle a given number of TC packets and immediately refresh forwarding entries.

Edged port default

Whether the function of configuring all ports of the switch as edge ports is enabled:
  • Enabled
  • Disabled

Pathcost-standard

Method of calculating the MSTP path cost.

Timer-factor

Multiplier of Hello time.

Transmit-limit

Maximum number of BPDUs that the current interface can send per Hello time.

CIST Global Information

CIST global information.

BPDU-Protection

Whether BPDU protection is enabled:
  • Disabled
  • Enabled

STP Converge Mode

Convergence mode of the Spanning Tree Protocol (STP), which can be fast or normal.

M-Lag ID

ID of the M-LAG.

Interface

User-side Eth-Trunk.

Port Protocol

Protocol status of the interface:
  • Enabled
  • Disabled

display m-lag troubleshooting

Function

The display m-lag troubleshooting command displays causes about M-LAG faults.

Format

display m-lag troubleshooting [ history ]

Parameters

Parameter Description Value
history

Displays historical fault information. If this parameter is not specified, the current fault information is displayed.

-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

When an M-LAG fault occurs, run the display m-lag troubleshooting command to check causes about M-LAG faults.

The display m-lag troubleshooting command displays the causes of a maximum of 100 recent faults.

Example

# Display the cause about the current M-LAG fault.

<HUAWEI> display m-lag troubleshooting
Total :1                                                                                                                            
--------------------------------------------------------------------------------                                                    
Seq  Time                     Event Description                                                                                     
--------------------------------------------------------------------------------                                                    
1    2016-05-23 11:51:17      Pairing of switches in M-LAG 100 (Interface = Eth-                                                    
                              Trunk 100) failed because the status of 100 was Do                                                    
                              wn. Check the link status of M-LAG 100.                                                               
--------------------------------------------------------------------------------

# Display causes about M-LAG historical faults.

<HUAWEI> display m-lag troubleshooting history                                     
Total :2                                                                                                                           
--------------------------------------------------------------------------------                                                    
Seq  Time                     Event Description                                                                                     
--------------------------------------------------------------------------------                                                    
1    2016-05-23 14:53:53      DFS pairing failed because the peer-link was Down.                                                    
                               Check the status of the peer-link interface.(Inte                                                    
                              rface = Eth-Trunk0).                                                                                  
2    2016-05-23 11:51:17      Pairing of switches in M-LAG 100 (Interface = Eth-                                                    
                              Trunk 100) failed because the status of 100 was Do                                                    
                              wn. Check the link status of M-LAG 100.
Table 7-34  Description of the display m-lag troubleshooting command output

Item

Description

Total

M-LAG fault count.

Seq

Sequence number.

Time

M-LAG fault occurrence time.

Event Description

Cause for the M-LAG fault.

display m-lag unpaired-port suspend

Function

The display m-lag unpaired-port suspend command displays the name of the interface that is configured to enter the Error-Down state on the slave device.

Format

display m-lag unpaired-port suspend

Parameters

None

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

You can run the display m-lag unpaired-port suspend command to view the name of the interface where the m-lag unpaired-port suspend command is configured.

Example

# Display the name of the interface that is configured to enter the Error-Down state.

<HUAWEI> display m-lag unpaired-port suspend
*    : errordown                                                                                                                    
Ports                                                                                                                               
----------------------------------------------------------------                                                                    
Eth-Trunk2      Eth-Trunk30     40GE1/0/30      40GE1/0/31
Table 7-35  Description of the display m-lag unpaired-port suspend command output

Item

Description

*

The interface is configured to enter the Error-Down state.

The interface enters the Error-Down state only when the peer-link is faulty.

Ports

Name of the interface.

display m-lag unpaired-port reserved

Function

The display m-lag unpaired-port reserved command displays the name of the interface that is configured not to enter the Error-Down state when the peer-link fails but the DAD status is normal.

Format

display m-lag unpaired-port reserved

Parameters

None

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

You can run the display m-lag unpaired-port reserved command to check the name of the interface where the m-lag unpaired-port reserved command is configured.

Example

# Display the name of the interface that is configured not to enter the Error-Down state when the peer-link fails but the DAD status is normal.

<HUAWEI> display m-lag unpaired-port reserved
*    : errordown                                                                                                                    
Ports                                                                                                                               
----------------------------------------------------------------                                                                    
Eth-Trunk2      Eth-Trunk30     40GE1/0/30      40GE1/0/31
Table 7-36  Description of the display m-lag unpaired-port reserved command output

Item

Description

*

The interface is configured to enter the Error-Down state.

The interface enters the Error-Down state only when the peer-link is faulty.

Ports

Interface name.

display snmp-agent trap feature-name etrunk all

Function

The display snmp-agent trap feature-name etrunk all command displays all trap messages of the ETRUNK module.

Format

display snmp-agent trap feature-name etrunk all

Parameters

None

Views

All views

Default Level

3: Management level

Usage Guidelines

The Simple Network Management Protocol (SNMP) is a standard network management protocol widely used on TCP/IP networks. It uses a central computer (a network management station) that runs network management software to manage network elements. The SNMP agent reports trap messages to the network management station so that the network management station can obtain the network status in a timely manner, and the network administrator can take measures accordingly.

The display snmp-agent trap feature-name etrunk all command displays whether all trap functions of the ETRUNK module are enabled.

Example

# Display all trap messages of the ETRUNK module.

<HUAWEI> display snmp-agent trap feature-name etrunk all
------------------------------------------------------------------------------  
Feature name: ETRUNK                                                            
Trap number : 2                                                                 
------------------------------------------------------------------------------  
Trap name                      Default switch status   Current switch status    
hwMLagHeartLost                on                      on                       
hwMLagHeartLostResume          on                      on                       
Table 7-37  Description of the display snmp-agent trap feature-name etrunk all command output

Item

Description

Feature name

Name of the module to which a trap message belongs.

Trap number

Number of trap messages.

Trap name

Name of a trap message of the ETRUNK module.

Default switch status

Whether the default trap function is enabled:

  • on: The trap function is enabled.
  • off: The trap function is disabled.

Current switch status

Whether the current trap function is enabled:

  • on: The trap function is enabled.
  • off: The trap function is disabled.

display stp v-stp

Function

The display stp v-stp command displays V-STP status and statistics.

Format

display stp [ process process-id ] v-stp

Parameters

Parameter Description Value
process process-id Specifies the ID of an MSTP process.
NOTE:
By default, an MSTP process works in MSTP mode. Currently, V-STP scenarios support only STP and RSTP modes. The MSTP process therefore must be configured to work in STP or RSTP mode in V-STP scenarios.
The value is an integer ranging from 1 to 256.

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

To check V-STP status and statistics, run the display stp v-stp command. The command output shows bridge, peer-link interface, virtual interface, and M-LAG interface information.

Example

# Display V-STP information.
<HUAWEI> display stp v-stp
Bridge Information: 
  V-STP Mode          :False
  Bridge Mac          :Config=38af-7611-1200 / Active=38af-7611-1200
  Peer-link Name      :Eth-Trunk1

CIST Global Information: 
  Priority            :Config=32768 / Active=32768
  Peer-link State     :Down
  CIST Root Times     :Hello 2s MaxAge 20s FwDly 15s MaxHop 20
  CIST Root/ERPC      :32768.38af-7611-1200 / 0
  CIST RegRoot/IRPC   :32768.38af-7611-1200 / 0
  Designated Bridge/Port   :32768.38af-7611-1200 / 0.0
  CIST RootPortId     :0.0
  Virtual Port State  :Inactive
  Packet Sent         :0
  Packet Received     :0
  TC(Sent/Received)    :0 / 0

CIST M-lag Port Information: 
  Port Id             :3
  Port Name           :Eth-Trunk2
  M-lag Id            :3
  Port State          :Down
  Port Role           :Disabled Port
  Port Cost(Dot1T)    :Config=auto / Active=2000
# Display V-STP information with an MSTP process ID set to 256.
<HUAWEI> display stp process 256 v-stp
Bridge Information: 
  V-STP Mode          :True 
  Bridge Mac          :Config=08e8-4f6a-7401 / Active=08e8-4f6a-7501
  Peer-link Name      :Eth-Trunk12 

CIST Global Information: 
  Priority            :Config=0 / Active=0
  Peer-link State     :Forwarding 
  CIST Root Times     :Hello 2s MaxAge 20s FwDly 15s MaxHop 20
  CIST Root/ERPC      :0.08e8-4f6a-7501 / 0
  CIST RegRoot/IRPC   :0.08e8-4f6a-7501 / 0
  Designated Bridge/Port   :0.08e8-4f6a-7501 / 0.0
  CIST RootPortId     :0.0 
  Virtual Port State  :Active 
  Packet Sent         :89
  Packet Received     :95
  TC(Sent/Received)   :0 / 0

CIST M-lag Port Information: 
  Port Id             :64
  Port Name           :Eth-Trunk16
  M-lag Id            :4
  Port State          :Forwarding
  Port Role           :Designated Port
  Port Cost(Dot1T)    :Config=auto / Active=2000
Table 7-38  Description of the display stp v-stp command output

Item

Description

Bridge Information

V-STP bridge information

V-STP Mode

V-STP mode
  • False: non-V-STP mode
  • True: V-STP mode

Bridge Mac

Remote device's priority and bridge MAC address

  • Config: configured MAC address. If a bridge MAC address is configured, its value is displayed. If no bridge MAC address is configured, the system MAC address is configured.
  • Active: MAC address in use, which can be the configured MAC address or synchronized MAC address from the master device.

Peer-link Name

Name of the V-STP connected remote interface

NOTE:

If no peer-link exists, hyphens (--) are displayed.

CIST Global Information

Global CIST information

Priority

CIST bridge priority

Peer-link State

Peer-link interface status
  • Down
  • Forwarding
  • Learning
  • Discarding
  • Inactive

CIST Root Times

Time information of the CIST root

  • Hello: interval at which BPDUs are sent
  • MaxAge: maximum TTL of BPDUs
  • FwDly: holdoff period for interface status transition
  • MaxHop: maximum number of hops in the MST region

CIST Root/ERPC

CIST root ID/external path cost

CIST RegRoot/IRPC

CIST regional root ID/internal path cost

Designated Bridge/Port

ID of the designated switch and designated interface

CIST RootPortId

Root interface ID

Virtual Port State

Virtual interface activation status:

  • Active
  • Inactive

Packet Sent

Number of sent V-STP BPDUs

Packet Received

Number of received V-STP BPDUs

TC(Sent/Received)

Number of sent and received TC BPDUs

CIST M-lag Port Information

V-STP-enabled M-LAG interface information

Port Id

Interface ID

Port Name

Interface name

M-lag Id

M-LAG ID

Port State

Interface status

Port Role

Interface role in a CIST region:

  • CIST Root Port
  • CIST Designated Port
  • CIST Alternate Port
  • Disabled Port

Port Cost(Dot1T)

Interface's path cost (calculated using the dot1t algorithm):

  • Config: configured path cost
  • Active: path cost in use

lacp m-lag priority

Function

The lacp m-lag priority command sets the LACP priority of a member Eth-Trunk of an M-LAG, that is, LACP M-LAG system priority.

The undo lacp m-lag priority command restores the default LACP M-LAG system priority.

The default LACP M-LAG system priority is 32768, and there is no default LACP M-LAG system priority in the Eth-Trunk interface view.

Format

lacp m-lag priority priority

undo lacp m-lag priority

Parameters

Parameter Description Value
priority

Specifies the LACP M-LAG system priority.

A smaller value indicates a higher LACP M-LAG system priority.

The value is an integer that ranges from 0 to 65535.

Views

System view, Eth-Trunk interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

When an M-LAG is composed of an Eth-Trunk in LACP mode, the LACP M-LAG system priority is used to differentiate priorities of both devices of the Eth-Trunk. The device with a higher system priority functions as the Actor, and the other device selects active interface based on the interface priority of the Actor.

The lacp m-lag priority command sets the LACP M-LAG system priority.

Prerequisites

Ensure that the Eth-Trunk has been configured to work in static or dynamic LACP mode using the mode lacp-static or mode lacp-dynamic command and the Eth-Trunk has been bound to the DFS group when the lacp m-lag priority command is executed in the Eth-Trunk interface view.

Precautions

  • Eth-Trunks on both devices configured with M-LAG must use the same LACP M-LAG system priority.
  • The LACP M-LAG system priority configured in the system view takes effect for all Eth-Trunks. The LACP M-LAG system priority configured in the Eth-Trunk interface view takes effect for only the specified Eth-Trunk. If the lacp m-lag priority command is configured in the system view and Eth-Trunk interface view, the LACP M-LAG system priority configured in the Eth-Trunk interface view takes effect.
  • When multiple M-LAGs are configured on the device, different Eth-Trunks can use different system priorities. In this case, you need to set the LACP M-LAG system priority in the Eth-Trunk interface view.
  • The LACP M-LAG system priority is valid for the M-LAG composed of an Eth-Trunk in LACP mode, whereas the LACP system priority configured by the lacp priority command is valid for an Eth-Trunk in LACP mode.

    If both the LACP M-LAG system priority and LACP system priority are configured, the Eth-Trunk in LACP mode that joins an M-LAG uses the LACP M-LAG system priority but not the LACP system priority.

Example

# Set the LACP M-LAG system priority to 10 in the view of Eth-Trunk 10.

<HUAWEI> system-view
[~HUAWEI] interface eth-trunk 10
[~HUAWEI-Eth-Trunk10] mode lacp-static
[*HUAWEI-Eth-Trunk10] dfs-group 1 m-lag 1
[*HUAWEI-Eth-Trunk10] lacp m-lag priority 10

lacp m-lag system-id

Function

The lacp m-lag system-id command sets the LACP system ID of a member Eth-Trunk of an M-LAG, that is, LACP M-LAG system ID.

The undo lacp m-lag system-id command restores the default LACP M-LAG system ID.

The default LACP M-LAG system ID in the system view is the MAC address of an Ethernet interface on the MPU, and there is no default LACP M-LAG system ID in the Eth-Trunk interface view.

Format

lacp m-lag system-id mac-address

undo lacp m-lag system-id

Parameters

Parameter Description Value
mac-address

Specifies the LACP M-LAG system ID.

A smaller value indicates a higher LACP M-LAG system ID.

The value is in H-H-H format. An H is a hexadecimal string of four characters. You can enter 1 to 4 characters, for example, 00e0 and fc01. If you enter fewer than four characters, 0s are padded before the input characters. For example, if e0 is entered, 00e0 is displayed.
NOTE:
  • The LACP M-LAG system ID cannot be all 0s.
  • If the value is set to all Fs, the default LACP M-LAG system ID is restored.

Views

System view, Eth-Trunk interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

When an M-LAG is composed of an Eth-Trunk in LACP mode, the LACP M-LAG system priority is used to differentiate priorities of both devices of the Eth-Trunk. The device with a higher system priority functions as the Actor, and the other device selects active interface based on the interface priority of the Actor. When both ends of the Eth-Trunk use the same LACP M-LAG system priority, you can run the lacp m-lag system-id command to set the LACP M-LAG system ID to determine priorities of both devices. The devices then can determine active interfaces.

Prerequisites

Ensure that the Eth-Trunk has been configured to work in static or dynamic LACP mode using the mode lacp-static or mode lacp-dynamic command and the Eth-Trunk has been bound to the DFS group when the lacp m-lag system-id command is executed in the Eth-Trunk interface view.

Precautions

  • Eth-Trunks on both devices configured with M-LAG must use the same LACP M-LAG system ID.
  • The LACP M-LAG system ID configured in the system view takes effect on all Eth-Trunks. The LACP M-LAG system ID configured in the Eth-Trunk interface view takes effect for only the specified Eth-Trunk. If the lacp m-lag system-id command is configured in the system view and Eth-Trunk interface view, the LACP M-LAG system ID configured in the Eth-Trunk interface view takes effect.
  • When multiple M-LAGs are configured on the device, different Eth-Trunks can use different system IDs. In this case, you need to set the system ID of an LACP M-LAG in the Eth-Trunk interface view.
  • The LACP M-LAG system ID is valid for the M-LAG composed of an Eth-Trunk in LACP mode, whereas the LACP system ID is valid for an Eth-Trunk in LACP mode. The LACP system ID is the MAC address of an Ethernet interface on the MPU and cannot be changed.

Example

# Set the LACP M-LAG system ID to 00E0-FC00-0000 in the view of Eth-Trunk 10.

<HUAWEI> system-view
[~HUAWEI] interface eth-trunk 10
[~HUAWEI-Eth-Trunk10] mode lacp-static
[*HUAWEI-Eth-Trunk10] dfs-group 1 m-lag 1
[*HUAWEI-Eth-Trunk10] lacp m-lag system-id 00e0-fc00-0000
Related Topics

m-lag unpaired-port suspend

Function

The m-lag unpaired-port suspend command configures an interface on the backup device to automatically enter the Error-Down state.

The undo m-lag unpaired-port suspend command restores the default configuration of an interface on the backup device when the peer-link fails but the DAD status is normal.

By default, this command is not configured on any interface.

Format

m-lag unpaired-port suspend

undo m-lag unpaired-port suspend

Parameters

None

Views

GE interface view, 10GE interface view, 40GE interface view, 25GE interface view, 100GE interface view, Eth-Trunk interface view, port group view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

On a dual-homing TRILL network where M-LAG is deployed, when the peer-link fails but the DAD status is normal, the M-LAG interface on the backup device enters the Error-Down state. On a dual-homing Ethernet, VXLAN, or IP network where M-LAG is deployed, when the peer-link fails but the DAD status is normal, interfaces except the management interface, peer-link interface, and stack interface on the backup device all enter the Error-Down state. When the peer-link recovers, the M-LAG member interface in Error-Down state becomes Up after 2 minutes by default, and other interfaces in Error-Down state are restored to the Up state.

In practice, uplink interfaces running routing protocols or DAD-enabled heartbeat interfaces should not enter the Error-Down state. You can configure this command on the interfaces that are not M-LAG member interfaces. Table 7-39 describes the Error-Down state of interfaces when the peer-link fails but the DAD status is normal.

Table 7-39  Error-Down state of interfaces when the peer-link fails but the DAD status is normal

Device Configuration

Ethernet, VXLAN, or IP Network Where M-LAG Is Deployed

TRILL Network Where M-LAG Is Deployed

Default setting

Interfaces except the management interface, peer-link interface, and stack interface on the backup device all enter the Error-Down state.

The M-LAG member interface is in Error-Down state.

Device where m-lag unpaired-port suspend is configured

Only the M-LAG member interface and the interface configured with m-lag unpaired-port suspend are in Error-Down state.

Only the M-LAG member interface and the interface configured with m-lag unpaired-port suspend are in Error-Down state.

Device where m-lag unpaired-port reserved is configured

Interfaces except the interface configured with m-lag unpaired-port reserved, management interface, peer-link interface, and stack interface on the backup device all enter the Error-Down state.

The M-LAG member interface is in Error-Down state.

Device where both m-lag unpaired-port suspend and m-lag unpaired-port reserved are configured

Only the M-LAG member interface and the interface configured with m-lag unpaired-port suspend are in Error-Down state.

Only the M-LAG member interface and the interface configured with m-lag unpaired-port suspend are in Error-Down state.

Precautions

  • You are advised to configure this command on interfaces of both the M-LAG master and slave devices, so the Error-Down state of interfaces is consistent after an active/standby switchover of the M-LAG master and backup devices.

  • This command cannot be configured on the peer-link interface and M-LAG member interfaces.

  • This command and the m-lag unpaired-port reserved command cannot be configured on the same interface.

Prerequisites

DFS group has been created using the dfs-group dfs-group-id command.

Example

# Configure Eth-Trunk 2 on the backup device to automatically enter the Error-Down state.

<HUAWEI> system-view
[~HUAWEI] interface eth-trunk 2
[*HUAWEI-Eth-Trunk2] m-lag unpaired-port suspend

m-lag unpaired-port reserved

Function

The m-lag unpaired-port reserved command configures an interface on the backup device not to enter the Error-Down state when the peer-link fails but the DAD status is normal.

The undo m-lag unpaired-port reserved command restores the default configuration of an interface on the backup device when the peer-link fails but the DAD status is normal.

By default, this command is not configured on any interface.

Format

m-lag unpaired-port reserved

undo m-lag unpaired-port reserved

Parameters

None

Views

GE interface view, 10GE interface view, 40GE interface view, 25GE interface view, 100GE interface view, Eth-Trunk interface view, port group view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

On a dual-homing TRILL network where M-LAG is deployed, when the peer-link fails but the DAD status is normal, the M-LAG interface on the backup device enters the Error-Down state. On a dual-homing Ethernet, VXLAN, or IP network where M-LAG is deployed, when the peer-link fails but the DAD status is normal, interfaces except the management interface, peer-link interface, and stack interface on the backup device all enter the Error-Down state. When the peer-link recovers, the M-LAG member interface in Error-Down state becomes Up after 2 minutes by default, and other interfaces in Error-Down state are restored to the Up state.

In practice, uplink interfaces running routing protocols or DAD-enabled heartbeat interfaces should not enter the Error-Down state. You can run this command on such interfaces. Table 7-40 describes the Error-Down state of interfaces when the peer-link fails but the DAD status is normal.

Table 7-40  Error-Down state of interfaces when the peer-link fails but the DAD status is normal

Device Configuration

Ethernet, VXLAN, or IP Network Where M-LAG Is Deployed

TRILL Network Where M-LAG Is Deployed

Default setting

Interfaces except the management interface, peer-link interface, and stack interface on the backup device all enter the Error-Down state.

The M-LAG member interface is in Error-Down state.

Device where m-lag unpaired-port suspend is configured

Only the M-LAG member interface and the interface configured with m-lag unpaired-port suspend are in Error-Down state.

Only the M-LAG member interface and the interface configured with m-lag unpaired-port suspend are in Error-Down state.

Device where m-lag unpaired-port reserved is configured

Interfaces except the interface configured with m-lag unpaired-port reserved, management interface, peer-link interface, and stack interface on the backup device all enter the Error-Down state.

The M-LAG member interface is in Error-Down state.

Device where both m-lag unpaired-port suspend and m-lag unpaired-port reserved are configured

Only the M-LAG member interface and the interface configured with m-lag unpaired-port suspend are in Error-Down state.

Only the M-LAG member interface and the interface configured with m-lag unpaired-port suspend are in Error-Down state.

Precautions

  • You are advised to configure this command on interfaces of both the M-LAG master and slave devices, so the Error-Down state of interfaces is consistent after an active/standby switchover of the M-LAG master and backup devices.

  • This command cannot be configured on the peer-link interface and M-LAG member interfaces.

  • This command and the m-lag unpaired-port suspend command cannot be configured on the same interface.

Prerequisites

DFS group has been created using the dfs-group dfs-group-id command.

Example

# Configure Eth-Trunk 2 on the backup device not to enter the Error-Down state.

<HUAWEI> system-view
[~HUAWEI] interface eth-trunk 2
[*HUAWEI-Eth-Trunk2] m-lag unpaired-port reserved

m-lag up-delay

Function

The m-lag up-delay command sets the delay for the M-LAG member interface to report the Up event.

The undo m-lag up-delay command restores the default configuration.

By default, the delay for the M-LAG member interface to report the Up event is 120 seconds.

Format

m-lag up-delay value

undo m-lag up-delay value

Parameters

Parameter

Description

Value

value

Specifies the delay for the M-LAG member interface to report the Up event.

The value is an integer that ranges from 0 to 3600, in seconds.

Views

DFS group view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

When the physical status of an interface changes, the system notifies upper-layer protocol modules (such as the routing and forwarding modules) of the change to direct packet receiving and forwarding. However, after the switch restarts or a card resets, the physical status of an interface changes to Up, but the upper-layer protocol modules do not meet forwarding requirements. If the interface receives packets and sends the packets to the upper-layer protocol modules, the modules cannot properly process the packets. As a result, the upper-layer protocol negotiation mechanism does not take effect and packet loss occurs. Generally, you can run the set up-delay command to set the delay for an interface to go Up. In M-LAG scenarios, you can run the m-lag up-delay command to set the delay for the M-LAG member interface to report the Up event.

Precautions

It is recommended that the delay for an interface to go Up should be larger than 60s.

If this command is configured, the delay function takes effect only after the device restarts, the card resets, or the peer-link recovers.

If the set up-delay command is configured on a physical member interface of the M-LAG interface, a larger delay is used.

If the delay in reporting the interface Up status does not expire on an interface, and the set up-delay command is run to change the delay or the interface restarts, the original delay becomes invalid. Therefore, change the delay when the interface works properly.

Example

# Set the delay for the M-LAG interface to report the Up event to 90s.

<HUAWEI> system-view
[~HUAWEI] dfs-group 1
[*HUAWEI-dfs-group-1] m-lag up-delay 90

port vlan exclude

Function

The port vlan exclude command specifies VLANs not allowed by a peer-link interface.

The undo port vlan exclude command cancels the configuration.

By default, no allowed VLAN is specified on a peer-link interface.

Format

port vlan exclude { { vlan-id1 [ to vlan-id2 ] } &<1-10> }

undo port vlan exclude { { vlan-id1 [ to vlan-id2 ] } &<1-10> }

Parameters

Parameter

Description

Value

vlan-id1 [ to vlan-id2 ]

Specifies VLANs not allowed by a peer-link interface.
  • vlan-id1 specifies the first VLAN ID.
  • to vlan-id2 specifies the last VLAN ID. The value of vlan-id2 must be larger than or equal to the value of vlan-id1.

The value of vlan-id1 is an integer that ranges from 1 to 4094.

The value of vlan-id2 is an integer that ranges from 1 to 4094.

Views

Eth-Trunk interface view

Default Level

2: Configuration level

Usage Guidelines

Prerequisites

The Eth-Trunk has been configured as a peer-link interface using the peer-link (Eth-Trunk interface view) peer-link-id command in the Eth-Trunk interface view.

The command is mutually exclusive with the vxlan vni command.

Example

# Specify VLANs 10 to 30 not allowed by Eth-Trunk 2.

<HUAWEI> system-view
[~HUAWEI] interface eth-trunk 2
[*HUAWEI-Eth-Trunk2] peer-link 1
[*HUAWEI-Eth-Trunk2] port vlan exclude 10 to 30

priority (DFS group view)

Function

The priority command sets the priority of a DFS group.

The undo priority command restores the default priority of a DFS group.

By default, the priority of a DFS group is 100.

Format

priority priority

undo priority [ priority ]

Parameters

Parameter Description Value
priority Specifies the priority of a DFS group. The value is an integer that ranges from 1 to 254. A larger value indicates a higher priority.

Views

DFS group view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

Two devices configured with M-LAG send negotiation packets for negotiation and determine the master and backup statuses. M-LAG determines the master and backup statuses based on the priority and MAC address. The device with a higher priority is the master. You can also run the priority command to set the priority to determine the master and backup statuses of devices.

Precautions

If the priorities of the two devices are the same, the device with a smaller system MAC address is the master.

If the priority and system MAC address are the same, M-LAG considers the two devices to be the master. You are advised to set different priorities for two devices.

Example

# Set the priority of a DFS group to 10.

<HUAWEI> system-view
[~HUAWEI] dfs-group 1
[*HUAWEI-dfs-group-1] priority 10

pseudo-nickname

Function

The pseudo-nickname command configures a pseudo nickname and priority for a DFS group.

The undo pseudo-nickname command cancels the configuration.

By default, no pseudo nickname is configured for a DFS group.

Format

pseudo-nickname nickname-value [ priority priority ]

undo pseudo-nickname [ nickname-value [ priority priority ] ]

Parameters

Parameter Description Value
nickname-value Specifies a pseudo nickname of a DFS group. The value is an integer that ranges from 1 to 65471.
priority priority

Specifies the priority of a pseudo nickname.

The value is an integer that ranges from 128 to 255. The default value is 192. A larger value indicates a higher priority.

Views

DFS group view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

On a dual-homing Transparent Interconnection of Lots of Links (TRILL) network, the pseudo nickname is encapsulated in TRILL packets instead of the actual nickname. When two RBs that join a DFS group use the same pseudo nickname, the remote device considers that one device connects to the TRILL network, regardless of the network topology.

Precautions

A pseudo nickname is generated using the following methods:
  • Manual: It is recommended that the same pseudo nickname be configured on two devices that are dual-homed to the TRILL network. If the configured pseudo nicknames are different, a pseudo nickname with a higher priority is used.
  • Automatic: Two devices negotiate a pseudo nickname.

Example

# Set the pseudo nickname to 300.

<HUAWEI> system-view
[~HUAWEI] dfs-group 1
[*HUAWEI-dfs-group-1] pseudo-nickname 300

reset m-lag troubleshooting history

Function

The reset m-lag troubleshooting history command clears M-LAG historical fault event information.

Format

reset m-lag troubleshooting history

Parameters

None

Views

User view

Default Level

3: Management level

Usage Guidelines

None

Example

# Clear M-LAG historical fault event information.

<HUAWEI> reset m-lag troubleshooting history

set lacp system-id switch-delay

Function

The set lacp system-id switch-delay command sets the delay in switching the LACP M-LAG system ID.

The undo set lacp system-id switch-delay command restores the default delay in switching the LACP M-LAG system ID.

By default, the delay in switching the LACP M-LAG system ID is 0, that is, the LACP M-LAG system ID is not switched.

Format

set lacp system-id switch-delay { switch-delay-time | immediately }

undo set lacp system-id switch-delay [ switch-delay-time | immediately ]

Parameters

Parameter Description Value
switch-delay-time

Specifies the delay in switching the LACP M-LAG system ID.

The value is an integer that ranges from 0 to 3600, in seconds.

immediately

Indicates that the LACP M-LAG system ID is switched immediately.

-

Views

DFS group view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

When devices successfully pair into a DFS group, the master device synchronizes its LACP M-LAG system ID to the backup device. The M-LAG member interface on the backup device uses the synchronized LACP M-LAG system ID for LACP negotiation. When devices fail to pair into a DFS group and M-LAG fails, and the backup device does not join the M-LAG within the delay, the backup device uses the synchronized LACP M-LAG system ID. If the backup device joins the M-LAG within the delay, the slave device uses its LACP M-LAG system ID.

When the delay is set to 0, the LACP M-LAG system ID is not switched.

Precaution

After an active/standby switchover of the M-LAG master and backup devices is performed, the LACP M-LAG system ID is not switched.

Example

# Set the delay in switching the LACP M-LAG system ID to 1200s.

<HUAWEI> system-view
[~HUAWEI] dfs-group 1
[*HUAWEI-dfs-group-1] set lacp system-id switch-delay 1200

snmp-agent trap enable feature-name etrunk

Function

The snmp-agent trap enable feature-name etrunk command enables the trap function for the E-Trunk module.

The undo snmp-agent trap enable feature-name etrunk command disables the trap function for the E-Trunk module.

By default, the trap function is disabled for the E-Trunk module.

Format

snmp-agent trap enable feature-name etrunk [ trap-name trap-name ]

undo snmp-agent trap enable feature-name etrunk [ trap-name trap-name ]

Parameters

Parameter Description Value
trap-name trap-name

Specifies the name of a trap.

If this parameter is not specified, all trap functions are enabled for the DAD module.

Enumerated type. For details, see Table 7-41.

Views

System view

Default Level

3: Management level

Usage Guidelines

To allow the NMS to easily manage the E-Trunk module of the device, run the command to enable the trap function for the E-Trunk module. Then generated traps can be sent to the NMS. Otherwise, traps of the E-Trunk module are not sent to the NMS.

Table 7-41  Traps of the E-Trunk module

Trap Name

Default Status

Meaning

hwMLagHeartLost Enabled

DAD packets are lost. Check the source address or link status of the local or remote device.

hwMLagHeartLostResume Enabled

DAD packets can be received and sent.

Example

# Disable the trap function for DAD packet loss of the E-Trunk module.

<HUAWEI> system-view
[~HUAWEI] undo snmp-agent trap enable feature-name etrunk trap-name hwmlagheartlost

source ip

Function

The source ip command binds a DFS group to an IPv4 address and a VPN instance.

The undo source ip command cancels the configuration.

By default, a DFS group is not bound to any IPv4 address or VPN instance.

Format

  • When a DFS group is bound to only the IPv4 address, use the following command:

    source ip ip-address

    undo source ip [ ip-address ]

  • When a DFS group is bound to an IPv4 address and a VPN instance use the following command:

    source ip ip-address vpn-instance vpn-instance-name

    undo source ip ip-address vpn-instance [ vpn-instance-name ]

Parameters

Parameter Description Value
ip-address

Specifies the IPv4 address bound to a DFS group.

The value is in dotted decimal notation.
vpn-instance-name

Specifies the name of a VPN instance bound to a DFS group.

The VPN must already exist.

Views

DFS group view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

When a CE is dual-homed to two PEs on an Ethernet VXLAN, or IP network, to enable PEs to exchange heartbeat packets, DFS groups need to be bound to IP addresses of Layer 3 interfaces connecting the two PEs. If the CE connects to a VPN, you must specify the VPN instance bound to a DFS group.

Precautions

You can configure one of source ip, source ipv6, and source nickname.

Example

# Bind a DFS group to IPv4 address 10.1.0.1.

<HUAWEI> system-view
[~HUAWEI] dfs-group 1
[*HUAWEI-dfs-group-1] source ip 10.1.0.1

source ipv6

Function

The source ipv6 command binds a DFS group to an IPv6 address and a VPN instance.

The undo source ipv6 command cancels the configuration.

By default, a DFS group is not bound to any IPv6 address or VPN instance.

Format

  • When a DFS group is bound to only the IPv6 address, use the following command:

    source ipv6 ipv6-address

    undo source ipv6 [ ipv6-address ]

  • When a DFS group is bound to an IPv6 address and a VPN instance use the following command:

    source ipv6 ipv6-address vpn-instance vpn-instance-name

    undo source ipv6 ipv6-address vpn-instance [ vpn-instance-name ]

Parameters

Parameter Description Value
ipv6-address

Specifies the IPv6 address bound to a DFS group.

The value is of 128 digits and divided into eight groups. Each group is a hexadecimal string of four characters. The value is in X:X:X:X:X:X:X:X format.
vpn-instance vpn-instance-name

Specifies the name of a VPN instance bound to a DFS group.

The VPN must already exist.

Views

DFS group view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

When a CE is dual-homed to two PEs on an Ethernet VXLAN, or IP network, to enable PEs to exchange heartbeat packets, DFS groups need to be bound to IP addresses of Layer 3 interfaces connecting the two PEs. If the IP network uses IPv6 addresses, a DFS group needs to be bound to an IPv6 address. If the CE connects to a VPN, you must specify the VPN instance bound to a DFS group.

Precautions

You can configure one of source ip, source ipv6, and source nickname.

Example

# Bind a DFS group to IPv6 address of fc00::1.

<HUAWEI> system-view
[~HUAWEI] dfs-group 1
[*HUAWEI-dfs-group-1] source ipv6 fc00::1

source nickname

Function

The source nickname command binds a nickname to a DFS group.

The undo source nickname command cancels the configuration.

By default, no nickname is bound to a DFS group.

Format

source nickname nickname-value

undo source nickname [ nickname-value ]

Parameters

Parameter Description Value
nickname-value Specifies the nickname bound to a DFS group. The value is an integer that ranges from 1 to 65471.

Views

DFS group view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

When a CE is dual-homed to a TRILL network, a nickname identifies an RB. The nicknames as a part of the MAC forwarding table are encapsulated into TRILL packets. When forwarding TRILL packets, an RB looks up the MAC forwarding table based on the nickname of the destination RB. When forwarding multicast packets, TRILL forms a multicast distribution tree (MDT) based on the root priority of the nickname of each RB to obtain the multicast forwarding table. A DFS group needs to be bound to a nickname so that RBs can exchange heartbeat packets.

Example

# Bind nickname 100 to a DFS group.

<HUAWEI> system-view
[~HUAWEI] dfs-group 1
[*HUAWEI-dfs-group-1] source nickname 100

stp v-stp enable

Function

The stp v-stp enable command enables V-STP on an M-LAG device.

The undo stp v-stp enable command disables V-STP on an M-LAG device.

By default, V-STP is disabled.

Format

stp v-stp enable

undo stp v-stp enable

Parameters

None

Views

System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

V-STP is a Layer 2 topology management feature in the M-LAG solution. V-STP allows two devices that both have STP enabled to be virtualized into one device to perform STP calculation.

STP can detect the M-LAG master/backup negotiation status. After the negotiation is complete and V-STP is enabled on the master and backup devices, the two devices are virtualized into one device to calculate roles and rapid convergence. To ensure correct STP calculation, the M-LAG backup device synchronizes the bridge MAC address and instance priority from the master device.

Precautions

In V-STP mode, to correctly calculate a network-wide Layer 2 topology, the M-LAG interfaces on the master and backup devices must meet the following requirements: Have the same STP configurations. Generate the same calculation result. Send the same STP packets to the connected aggregation or access device.

The V-STP mode conflicts with the global and multi-process MSTP modes.

Example

# Enable V-STP on an M-LAG device.

<HUAWEI> system-view
[~HUAWEI] stp v-stp enable
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Updated: 2019-03-21

Document ID: EDOC1000166501

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