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FusionStorage V100R006C10 File Storage Service Software Installation Guide 06

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Networking for Switches Not Shared by the Front and Back Ends

Networking for Switches Not Shared by the Front and Back Ends

This section describes how to configure switches in a network where the front and back ends do not share a switch.

Switch Configuration Overview

This section describes how to plan networking and ports of switches and how to obtain documents related to switches.

Network Planning

The following example uses three storage nodes, four CE6800 series switches, and one CE5800 series switch to explain how to configure switches. Figure 4-1 and Table 4-1 shows the network planning.

If the customer needs to plan uplink ports for management switch for connecting to other switches, contact Huawei technical support to customize a configuration solution based on the site requirements.

Figure 4-1  Networking diagram

Table 4-1 shows switch planning examples. The planning values are only for your reference and are italic texts in commands. You can replace them based on site requirements.

Table 4-1  Network planning example

Name

Example

Back-end switch

VLAN: 2

storage ports: 1/0/1 to 1/0/3, 2/0/1 to 2/0/3

40GE stack ports: 1/0/1 to 1/0/2

IPv4 address: 10.10.10.10/255.255.255.0

IPv6 address: feco:1::2 64

DeviceManager IPv4 address: 10.10.10.11

DeviceManager IPv6 address: feco:1::3

Front-end switch

VLAN: 100

Uplink ports: 1/0/4 to 1/0/6, 2/0/4 to 2/0/6

service ports: 1/0/1 to 1/0/3, 2/0/1 to 2/0/3

40GE stack ports: 1/0/1 to 1/0/2

Management switch

VLAN: 200

Mgmt ports: 1/0/1 to 1/0/3

NIC1 ports: 1/0/42 to 1/0/44

Switch management ports: 1/0/45 to 1/0/46

IPv4 address of a management switch: 10.110.100.1/255.255.255.0

IPv6 address of a management switch: fec0:1::1/64

Network management IPv4 address: 10.10.10.13

Network management IPv6 address: feco:1::5

Obtaining Switch-relevant Documents

This document uses the switch versions that match the delivered storage devices as an example to explain how to configure the switches. For details about the switch versions, see the FusionStorage Version Mapping.

If the switch version is another one, see the corresponding document to complete the configuration.

. To obtain the CE6800 series switch or CE5800 series switch document, log in to http://support.huawei.com/enterprise/ and choose Support > Enterprise Networking > Switch > Data Center Switch. Select CloudEngine 6800 or CloudEngine 5800 based on site requirements.

Configuring Back-End Storage Network Switches

This section describes how to configure back-end storage network switches.

Procedure

  1. Check switch versions.
    1. Log in to switches CE6800-1 through the console port separately.

      Set Transmission rate to 9600, Data bit to 8, Stop bit to 1, Parity bit to None, and Flow control mode to None. There is no authentication by default. For details about the operation, see chapter Appendix Common System Information and Basic System Operations > Logging In to a Switch Through a CONSOLE Port in this documention.

      If the following information is displayed, press Ctrl+C.

      USB discovery phase started...                                                  
      Press CTRL+C to abort Zero Touch Provisioning in 10 seconds... 

      You are prompted to set a password (the following output is for reference only). If security measures have been taken to protect the equipment room where the devices reside, there is no need to set a serial port password because if you forget the password, the devices cannot be managed. If a serial port password is set, record the password and notify the device administrator of the password.

      An initial password is required for the first login via the console.            
      Continue to set it? [Y/N]: N                      

    2. Run display version to query the current version of a switch. If the version displayed in the command output is not the required version, follow the instructions in chapter Networking for Switches Not Shared by the Front and Back Ends > Switch Configuration Overview to obtain the corresponding switch document and configure the switch with reference to the document that you have obtained.

      For details about the supported switch versions, see the FusionStorage Version Mapping.

  2. Stack switches CE6800-1 and CE6800-2.
    1. Ensure that the stack cables are connected.

      The following configuration can take effect only when stack cables are connected.

    2. Configure stack parameters for switch CE6800-1.

      NOTE:

      If confirmation messages are displayed when you execute the following commands, select Y all the time.

      #Run the following command to go to the system view: 
      <HUAWEI> system-view
      #Run the following commands to configure the stack priority, stack ID and stack domain ID: 
      [~HUAWEI] stack 
      [~HUAWEI-stack] stack member 1 priority 200 
      [*HUAWEI-stack] stack member 1 domain 10 
      [*HUAWEI-stack] quit 
      [*HUAWEI] commit 
      #Run the following commands to create a stack port: 
      [~HUAWEI] interface stack-port 1/1 
      #Run the following commands to add physical ports to the stack port. 
      #Each stack port number must correspond to the actually connected port number. 
      [*HUAWEI-Stack-Port1/1] port member-group interface 40ge 1/0/1 to 1/0/2 
      [*HUAWEI-Stack-Port1/1] quit 
      [*HUAWEI] commit 
      [~HUAWEI] quit 
      #Run the following command to save the configuration script: 
      <HUAWEI> save 
      Warning: The current configuration will be written to the device. Continue? [Y/N]:Y 
      #Press Enter. Info: Please input the file name(*.cfg, *.zip, *.dat)[vrpcfg.zip]: Now saving the current configuration to the slot 1 Info: Save the configuration successfully. 
      #Restart the switch and wait about five minutes. 
      <HUAWEI> reboot 
      ... 
      Warning: The system will reboot. Continue? [Y/N]:Y 
      ... 
      #Run the following command to shut down the stack port: 
      <HUAWEI> system-view 
      [~HUAWEI] interface stack-port 1/1 
      [*HUAWEI-Stack-Port1/1] shutdown 
      [*HUAWEI-Stack-Port1/1] quit 
      [*HUAWEI] commit 
      [~HUAWEI] quit 
      <HUAWEI> save 
      Warning: The current configuration will be written to the device. Continue? [Y/N]:y 
      ...

    3. As instructed in the preceding operations, log in to CE6800-2 through the console port and ensure that the version of CE6800-2 is correct.
    4. Configure stack parameters for switch CE6800-2.

      #Run the following command to go to the system view: 
      <HUAWEI> system-view 
      #Run the following commands to configure the stack ID and stack domain ID: 
      [~HUAWEI] stack 
      [~HUAWEI-stack] stack member 1 renumber 2 inherit-config 
      Warning: The stack configuration of member ID 1 will be inherited to member ID 2 after the device resets. Continue? [Y/N]:Y 
      [*HUAWEI-stack] stack member 1 domain 10 
      Info: The operation takes effect only after the save command is executed. The device with a lower priority then will be reset in stack merging scenario. 
      [*HUAWEI-stack] quit 
      [*HUAWEI] commit 
      #Run the following commands to create a stack port: 
      [~HUAWEI] interface stack-port 1/1 
      #Run the following commands to add physical ports to the stack port. 
      #Each stack port number must correspond to the actually connected port number. 
      [*HUAWEI-Stack-Port1/1] port member-group interface 40ge 1/0/1 to 1/0/2 
      [*HUAWEI-Stack-Port1/1] quit 
      [*HUAWEI] commit 
      [~HUAWEI] quit 
      <HUAWEI> save 
      Warning: The current configuration will be written to the device. Continue? [Y/N]:Y 
      #Press Enter. Info: Please input the file name(*.cfg, *.zip, *.dat)[vrpcfg.zip]: Now saving the current configuration to the slot 1 Info: Save the configuration successfully. 
      #Restart the switch and wait about five minutes. 
      <HUAWEI> reboot 
      ... 
      Warning: The system will reboot. Continue? [Y/N]:Y 
      ...

    5. After switch CE6800-2 successfully starts, log in to switch CE6800-1, and run the following command:

      <HUAWEI> system-view 
      [~HUAWEI] interface stack-port 1/1 
      [*HUAWEI-Stack-Port1/1] undo shutdown 
      [*HUAWEI-Stack-Port1/1] quit 
      [*HUAWEI] commit 
      [~HUAWEI] quit 
      <HUAWEI> save 
      Warning: The current configuration will be written to the device. Continue? [Y/N]:y 
      ...

      The CE6800-2 switch will automatically restart. Wait about 5 minutes.

    6. Verify the configuration.

      <HUAWEI> display stack                                                           
      ----------------------------------------------------------------                
      MemberID Role     MAC              Priority   Device Type                       
      ----------------------------------------------------------------                
      1        Master   30d1-7e72-9650   200        CE6800
      2        Standby  30d1-7e72-9600   100        CE6800
      ----------------------------------------------------------------                
      <HUAWEI> display stack topology
      Stack Topology:                                                                 
      ----------------------------------------------                                  
                  Stack-Port 1      Stack-Port 2                                      
      MemberID   Status Neighbor   Status Neighbor                                    
      ----------------------------------------------                                  
      1          up     2          --     --                                          
      2          up     1          --     --                                          
      ----------------------------------------------                                  
                                                                                      
      Stack Link:                                                                     
      ----------------------------------------------------------------------------    
      Stack-Port       Port               Status     PeerPort           PeerStatus    
      ----------------------------------------------------------------------------    
      Stack-Port1/1    40GE1/0/1          up         40GE2/0/1          up            
      Stack-Port1/1    40GE1/0/2          up         40GE2/0/2          up            
      Stack-Port2/1    40GE2/0/1          up         40GE1/0/1          up            
      Stack-Port2/1    40GE2/0/2          up         40GE1/0/2          up            
      ----------------------------------------------------------------------------    

      If two switches are included in the records, and the stack ID, stack priority, and stack ports are the same as that you have configured, the switches are stacked successfully.

  3. Configure the PFC function of DCB.

    The VLAN ID of the back-end storage network is 2 by default consistent with 2 in SLOT4-0.2 of the node at delivery. If the VLAN ID of the back-end storage network cannot be 2, you need to modify the value of SLOT4-0.2 of the node. For details about how to modify the value, see chapter Networking for Switches Not Shared by the Front and Back Ends > Modifying the Virtual Network Port ID on Each Storage Node in this documention.

    #Run the following command to go to the system view. 
    <HUAWEI> system-view 
    #Create VLAN2. 
    [~HUAWEI] vlan 2
    [*HUAWEI-vlan2] commit 
    [*HUAWEI-vlan2] quit 
    #Create port group 1 and add ports. 
    [~HUAWEI] port-group 1
    [*HUAWEI-port-group-1] group-member 10ge  1/0/1 to 10ge 1/0/3 
    [*HUAWEI-port-group-1] group-member 10ge 2/0/1 to 10ge 2/0/3 
    [*HUAWEI-port-group-1] commit 
    #Configure hybrid for the ports that are connected to the RoCE network adapter and specify the working mode of the PFC function. 
    [~HUAWEI-port-group-1] port link-type hybrid 
    #The RoCE port exits from VLAN 1. 
    [*HUAWEI-port-group-1] undo port hybrid untagged vlan 1 
    [*HUAWEI-port-group-1] port hybrid tagged vlan 2 
    [*HUAWEI-port-group-1] dcb pfc enable mode manual 
    [~HUAWEI-port-group-1] commit 
    [~HUAWEI-port-group-1] quit 
    #Set the priority. 
    [~HUAWEI] dcb pfc 
    [~HUAWEI-dcb-pfc] priority 0 to 5 
    [*HUAWEI-dcb-pfc] commit 
    [~HUAWEI-dcb-pfc] quit

  4. Configure an IP address for port MEth0/0/0.

    #Run the following commands to configure an IPv4 address for port MEth0/0/0 (the IPv4 address is shared by the two stacked switches CE6800-1 and CE6800-2):
    [~HUAWEI] interface MEth0/0/0
    [~HUAWEI-MEth0/0/0] ip address 10.110.100.10 255.255.255.0
    [*HUAWEI-MEth0/0/0] commit
    [~HUAWEI-MEth0/0/0] quit
    #Run the following commands to configure an IPv6 address for port MEth0/0/0 (the IPv6 address is shared by the two stacked switches CE6800-1 and CE6800-2):
    [~HUAWEI] interface MEth0/0/0
    [~HUAWEI-MEth0/0/0] ipv6 enable
    [~HUAWEI-MEth0/0/0] ipv6 address feco:1::2 64
    [*HUAWEI-MEth0/0/0] commit
    [~HUAWEI-MEth0/0/0] quit

  5. Configure SNMP.

    Configuring SNMP aims to discover switches and centrally manage switch alarms. Therefore, do not skip this operation.

    To protect system security, you are advised to use SNMPv3 and the authentication and encryption protocols illustrated in this section.

    [~HUAWEI] snmp-agent sys-info version v3
    [*HUAWEI] snmp-agent mib-view included aaa internet
    [*HUAWEI] snmp-agent group v3 group1 privacy write-view aaa notify-view aaa
    #Add SNMP user user1, authentication protocol sha, authentication password User@123, encryption protocol aes128, and encryption password User@321.
    #If multiple switches are connected to the network management system using the same SNMP user, the authentication protocol, 
    #authentication password, encryption protocol, and encryption password of one switch must be the same those of other switches. 
    #If you want to change your user name or password, execute the following command again:
    [*HUAWEI] snmp-agent usm-user v3 user1 group group1
    [*HUAWEI] snmp-agent usm-user v3 user1 authentication-mode sha
    Please configure the authentication password (8-255)                             
    Enter Password:                                                                 
    Confirm Password: 
    [*HUAWEI] snmp-agent usm-user v3 user1 privacy-mode aes128
    Please configure the privacy password (8-255)                                    
    Enter Password:                                                                 
    Confirm Password:
    #Set parameters to send trap packets to the cluster management IP address in the configuration file.
    #If theDeviceManager IP address is an IPv4 address 
    [*HUAWEI] snmp-agent target-host trap address udp-domain 10.110.100.11 params securityname user1 v3 privacy 
    #If the DeviceManager IP address is an IPv6 address 
    [*HUAWEI] snmp-agent target-host trap ipv6 address udp-domain feco:1::3 params securityname user1 v3 privacy
    [*HUAWEI] snmp-agent trap enable
    [*HUAWEI] commit
    [~HUAWEI] quit
    #Run the following command to save the configuration script:
    <HUAWEI> save
    Warning: The current configuration will be written to the device. Continue? [Y/N]:y
    ...

  6. Run display current-configuration | include snmp to query the SNMP configuration. A command output similar to the following is displayed.

    <HUAWEI> system-view
    [~HUAWEI] display current-configuration | include  snmp
    snmp-agent
    snmp-agent local-engineid 800007DB03A4DCBEF96590
    snmp-agent sys-info version v3
    snmp-agent group v3 group1 privacy write-view aaa notify-view aaa
    snmp-agent target-host trap address udp-domain 10.110.100.11 params securityname vser1 v3 privacy
    snmp-agent mib-view included aaa internet
    snmp-agent usm-user v3 user1
    snmp-agent usm-user v3 user1 group group1
    snmp-agent usm-user v3 user1 authentication-mode sha cipher %@%@A+{$Y8X284,+L<-g_'HYLjCd%@%@
    snmp-agent usm-user v3 user1 privacy-mode aes128 cipher %@%@WG=(Lp;HMY92f2NF[<YTLkSQ%@%@

  7. Run the display current-configuration command and press Enter to check related configurations one by one.
Troubleshooting

To clear configurations of 10GE switches, perform the following steps:

  1. Disconnect all stack cables between the two switches.

  2. Log in to switch CE6800-1 and run the following command:

    <HUAWEI> reset saved-configuration
    The action will delete the saved configuration on the device.                   
    The configuration will be erased to reconfigure. Continue? [Y/N]:y              
    Warning: Now clearing the configuration in the device.                          
    Info: Succeeded in clearing the configuration in the device.
    ##Restart the switch without saving configurations.
    <HUAWEI> reboot fast

    If you are prompted to Press CTRL+C to abort Zero Touch Provisioning in 10 seconds during the restart, press CTRL+C.

  3. Log in to switch CE6800-2 and run the following command:

    <HUAWEI> reset saved-configuration
    The action will delete the saved configuration on the device.                   
    The configuration will be erased to reconfigure. Continue? [Y/N]:y               
    Warning: Now clearing the configuration in the device.                          
    Info: Succeeded in clearing the configuration in the device.
    #Restart the switch without saving configurations.
    <HUAWEI> reboot fast

    If you are prompted to Press CTRL+C to abort Zero Touch Provisioning in 10 seconds during the restart, press CTRL+C.

(Optional) Configuring a Management Network Switch

You need to perform the following configuration if only a management switch serves as the management gateway.

Procedure

  1. Log in to management network switch through the console port.

    Set Speed(baud) to 9600, Data bits to 8, Stop bits to 1, Parity to None, and Flow control to None. There is no authentication by default. For details about the operation, see chapter Networking for Switches Not Shared by the Front and Back Ends > Logging In to a Switch Through a CONSOLE Port.

    If the following information is displayed, press Ctrl+C.

    USB discovery phase started...                                                  
    Press CTRL+C to abort Zero Touch Provisioning in 10 seconds... 

    You are prompted to set a password (the following output is for reference only). If security measures have been taken to protect the equipment room where the devices reside, there is no need to set a serial port password because if you forget the password, the devices cannot be managed. If a serial port password is set, record the password and notify the device administrator of the password.

    An initial password is required for the first login via the console.            
    Continue to set it? [Y/N]: N                      

  2. Create management VLAN.

    <HUAWEI> system-view
    [~HUAWEI] vlan 200
    #Add the descriptive information, facilitating management and identification of VLANs.
    [*HUAWEI-vlan200] description manage
    [*HUAWEI-vlan200] quit
    [*HUAWEI] commit
    [~HUAWEI] port-group 1
    [~HUAWEI-port-group1] group-member ge 1/0/1 to ge 1/0/3
    [*HUAWEI-port-group1] group-member ge 1/0/42 to ge 1/0/46
    [*HUAWEI-port-group1] port link-type access
    [*HUAWEI-port-group1] port default vlan 200
    [*HUAWEI-port-group1] quit
    [*HUAWEI] commit

  3. Configure an IP address that is within the management segment for the VLANIF interface.

    • If the IP address is an IPv4 address
      [HUAWEI] interface vlanif 200
      [HUAWEI-Vlanif200] ip address 10.110.100.12 255.255.255.0
      [HUAWEI-Vlanif200] quit
      [*HUAWEI] commit
      [~HUAWEI] quit
    • If the IP address is an IPv6 address
      [HUAWEI] interface vlanif 200
      [HUAWEI-Vlanif200] ipv6 enable
      [HUAWEI-Vlanif200] ipv6 address fec0:1::4 64
      [HUAWEI-Vlanif200] quit
      [*HUAWEI] commit
      [~HUAWEI] quit

  4. Run the following commands to view the IP address information.

    • If it is an IPv4 address, run the display ip interface brief command.
      [~HUAWEI] display ip interface brief
      *down: administratively down
      !down: FIB overload down
      ^down: standby
      (l): loopback
      (s): spoofing
      s(d): Dampening Suppressed
      The number of interface that is UP in Physical is 3
      The number of interface that is DOWN in Physical is 0
      The number of interface that is UP in Protocol is 3
      The number of interface that is DOWN in Protocol is 0
      Interface                         IP Address/Mask      Physical   Protocol VPN
      MEth0/0/0                       10.110.100.12/24      up         up       --
    • If it is an IPv6 address, run the display ipv6 interface brief command.
      [~HUAWEI] display ipv6 interface brief
      *down: administratively down                                                                                                        
      !down: FIB overload down                                                                                                            
      (l): loopback                                                                                                                       
      (s): spoofing                                                                                                                       
      Interface                    Physical              Protocol VPN                                                                     
      Vlanif77                     up                    up       --                                                                      
      [IPv6 Address] fec0:1::4

  5. Optional: Configure SNMP.

    Perform the following operations only when the upper-layer NMS needs to manage the local switch through SNMP. To ensure system security, you are advised to use SNMPv3, as well as the authentication protocol and encrypted protocol in this example when you configure SNMP.

    [~HUAWEI] snmp-agent sys-info version v3
    [*HUAWEI] snmp-agent mib-view included aaa internet
    [*HUAWEI] snmp-agent group v3 group1 privacy write-view aaa notify-view aaa
    #Add SNMP user user1, authentication protocol sha, authentication password User@123, encryption protocol aes128, and encryption password User@321.
    #If multiple switches are connected to the network management system using the same SNMP user, the authentication protocol, authentication password, encryption protocol, and encryption password of one switch must be the same those of other switches. 
    #If you want to change your user name or password, execute the following command again:
    [*HUAWEI] snmp-agent usm-user v3 user1 group group1
    [*HUAWEI] snmp-agent usm-user v3 user1 authentication-mode sha
    Please configure the authentication password (8-255)                             
    Enter Password:                                                                 
    Confirm Password: 
    [*HUAWEI] snmp-agent usm-user v3 user1 privacy-mode aes128
    Please configure the privacy password (8-255)                                    
    Enter Password:                                                                 
    Confirm Password:
    #Set parameters to send trap packets to the cluster management IP address in the configuration file.
    #If network management IP address is an IPv4 address
    [*HUAWEI] snmp-agent target-host trap address udp-domain 10.110.100.13 params securityname user1 v3 privacy
    #If the network management IP address is an IPv6 address
    [*HUAWEI] snmp-agent target-host trap ipv6 address udp-domain feco:1::5 params securityname user1 v3 privacy
    [*HUAWEI] snmp-agent trap enable
    [*HUAWEI] commit
    [~HUAWEI] quit
    #Run the following command to save the configuration script:
    <HUAWEI> save
    Warning: The current configuration will be written to the device. Continue? [Y/N]:y
    ...

  6. Optional: Run display current-configuration | include snmp to query the SNMP configuration. A command output similar to the following is displayed.

    <HUAWEI> system-view
    [~HUAWEI] display current-configuration | include  snmp
    snmp-agent
    snmp-agent local-engineid 800007DB03A4DCBEF96590
    snmp-agent sys-info version v3
    snmp-agent group v3 group1 privacy write-view aaa notify-view aaa
    snmp-agent target-host trap address udp-domain 10.110.100.13 params securityname vser1 v3 privacy
    snmp-agent mib-view included aaa internet
    snmp-agent usm-user v3 user1
    snmp-agent usm-user v3 user1 group group1
    snmp-agent usm-user v3 user1 authentication-mode sha cipher %@%@A+{$Y8X284,+L<-g_'HYLjCd%@%@
    snmp-agent usm-user v3 user1 privacy-mode aes128 cipher %@%@WG=(Lp;HMY92f2NF[<YTLkSQ%@%@

(Optional) Configuring Front-End Service Network Switches

The front-end service network switches are provided and configured by users. If switches on the front-end service network are CE6800 series switches, configure them by following instructions in this section.

Procedure

The front-end service ports of storage nodes are untagged. Therefore, the interconnected front-end network switches cannot be configured with tags. If tags are configured for these switches, the front-end network is unreachable and services cannot be provided.

You can configure the front-end service network switches after installing the cluster software. Before the configuration, enable the stacking function by following the instructions in chapter Configuring Switches > Configuring Switches on a 10GE Network > Networking for Switches Not Shared by the Front and Back Ends > Configuring Back-End Storage Network Switches in this documentation, and then run the following commands.

Configuring traffic control for the front-end service network switches is recommended. If other models of switches do not support the function, you do not need to configure it for them.

<HUAWEI> system-view
#Enable the traffic control function.
[~HUAWEI] port-group 1
[*HUAWEI-port-group-1] group-member 10ge 1/0/1 to 10ge 1/0/48
[*HUAWEI-port-group-1] commit
[~HUAWEI-port-group-1] flow-control
[*HUAWEI-port-group-1] commit
[~HUAWEI-port-group-1] quit
[~HUAWEI] port-group 2
[*HUAWEI-port-group-2] group-member 10ge 2/0/1 to 10ge 2/0/48
[*HUAWEI-port-group-2] commit
[~HUAWEI-port-group-2] flow-control
[*HUAWEI-port-group-2] commit
[~HUAWEI-port-group-2] quit
[~HUAWEI] vlan 100
[*HUAWEI-Vlan100] description FrontEnd
[*HUAWEI-Vlan100] commit
[~HUAWEI-Vlan100] quit
#Add other ports to the VLAN.
[~HUAWEI] port-group 3
[*HUAWEI-port-group3] group-member 10ge 1/0/1 to 10ge 1/0/3
[*HUAWEI-port-group3] group-member 10ge 2/0/1 to 10ge 2/0/3
[*HUAWEI-port-group3] port link-type access
[*HUAWEI-port-group3] port default vlan 100
[*HUAWEI-port-group3] commit
[~HUAWEI-port-group3] quit
 me [~HUAWEI] quit
<HUAWEI> save
Warning: The current configuration will be written to the device. Continue? [Y/N]:y
...
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Updated: 2019-03-28

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