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NE40E V800R010C00 Configuration Guide - Virtual Access 01

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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).
Configuring IP RAN Virtual Cluster Access

Configuring IP RAN Virtual Cluster Access

This section describes how to configure IP RAN virtual cluster access.

Usage Scenario

Virtual cluster access is deployed on the access ring of an IP RAN. Together with the L2VPN and L3VPN, virtual cluster access provides comprehensive end-to-end solutions for the following IP RAN services:
  • Ethernet services (multiple base stations are located on different network segments)

    As shown in Figure 2-4, VC1 and VC2 carry Ethernet services between AP1 and the master and between AP2 and the master, respectively. The master transmits Ethernet services from different IP network segments over different L3VPNs to the radio network controller site gateway (RSG).
    Figure 2-4  Ethernet services (multiple base stations are located on different network segments)
  • Ethernet services (multiple base stations are located on the same network segment)

    As shown in Figure 2-5, VC1 and VC2 carry Ethernet services between AP1 and the master and between AP2 and the master, respectively. The master transmits Ethernet services from the same IP network segment over the same L3VPN to the RSG.
    Figure 2-5  Ethernet services (multiple base stations are located on the same network segment)
  • Time division multiplexing (TDM) services

    As shown in Figure 2-6, VC1 and VC2 carry Ethernet services between AP1 and the master and between AP2 and the master, respectively. The master connects the access ring VCs and aggregation ring PW through Remote-AP interfaces to form a multi-segment pseudo wire (MS-PW) and transmits TDM services over the MS-PW to the RSG.
    NOTE:

    In a TDM service transmission scenario, BFD must be manually configured on the master and RSG to monitor PWs between APs and the RSG.

    Figure 2-6  TDM services

Pre-configuration Tasks

Before configuring IP RAN virtual cluster access, complete the following tasks:

  • Create a loopback interface and assign an IP address to it.

  • Assign an IP address to each interface.

Configuration Procedures

Figure 2-7 shows virtual cluster access configurations when a virtual cluster access Intermediate System to Intermediate System (IS-IS) process is automatically or manually established.

Figure 2-7  Virtual cluster access configurations

Enabling Virtual Cluster Accesss Globally

This section describes how to enable virtual cluster access globally. Enabling virtual cluster access globally is a prerequisite for configuring virtual cluster access.

Context

After you globally enable virtual cluster access on a device, the device automatically establishes a virtual cluster access Intermediate System to Intermediate System (IS-IS) process and globally enables Bidirectional Forwarding Detection (BFD).

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    virtual-cluster-access

    Virtual cluster access is globally enabled, and the virtual cluster access view is displayed.

    NOTE:

    Running the undo virtual-cluster-access command globally disables virtual cluster access but does not delete a created virtual cluster access IS-IS process.

  3. Run:

    commit

    The configuration is committed.

(Optional) Configuring a Virtual Cluster Accesss IS-IS Process Manually

This section describes how to manually configure a virtual cluster access Intermediate System to Intermediate System (IS-IS) process. After virtual cluster access is deployed, a virtual cluster access IS-IS process is automatically established by default.

Context

Virtual cluster access uses extended IS-IS to collect network topology information. A virtual cluster access IS-IS process can be automatically or manually established.
  • Manual establishment: To plan IS-IS processes on a device, run the isis command to establish an IS-IS process, and run the virtual-cluster-access enable command to configure the process as a virtual cluster access IS-IS process.
  • Automatic establishment: After you globally enable virtual cluster access on a device, the device automatically establishes a virtual cluster access IS-IS process based on the rules described in the following table.

    Scenario

    Sub-scenario

    Description

    No IS-IS process exists.

    By default, no IS-IS process exists.

    An AP and a master automatically establish an IS-IS process with the ID of 65534.

    One or more IS-IS processes exist.

    The ID of 65534 has been used for an IS-IS process.

    An AP and a master search for an unused IS-IS process ID in descending order from 65534 and use the ID to establish the first virtual cluster access IS-IS process.

    The ID of 65534 has not been used for an IS-IS process.

    An AP and a master automatically establish an IS-IS process with the ID of 65534.

Procedure

  • Configure an existing IS-IS process as a virtual cluster access IS-IS process.
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      isis [ process-id ]

      The IS-IS view is displayed.

    3. Run:

      virtual-cluster-access enable

      The IS-IS process is configured as a virtual cluster access IS-IS process.

    4. Run:

      commit

      The configuration is committed.

  • Establish an IS-IS process and configure it as a virtual cluster access IS-IS process.
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      isis [ process-id ]

      An IS-IS process is established.

    3. Run:

      virtual-cluster-access enable

      The IS-IS process is configured as a virtual cluster access IS-IS process.

    4. Run:

      network-entity net

      A network entity title (NET) is configured.

    5. (Optional) Run:

      description

      A description is configured for the virtual cluster access IS-IS process.

    6. Run:

      commit

      The configuration is committed.

Enabling Virtual Cluster Access on an Interface

This section describes how to enable virtual cluster access on an interface. After you enable virtual cluster access on an interface, a master uses this interface to transmit service packets to an access point (AP).

Context

You can enable virtual cluster access only on an interface connected to an AP. After you enable virtual cluster access on an interface, the interface automatically establishes a virtual cluster access Intermediate System to Intermediate System (IS-IS) process. If label forwarding is required for an interface with virtual cluster access enabled, you must enable MPLS on the interface.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    interface interface-type interface-number [ .subinterface-number ]

    The interface view is displayed.

  3. Run:

    virtual-cluster-access enable

    Virtual cluster access is enabled on the interface.

    NOTE:

    Running the undo virtual-cluster-access enable command disables virtual cluster access on an interface but does not delete a virtual cluster access IS-IS process created on the interface.

  4. Run:

    mpls

    MPLS is enabled on the interface.

  5. Run:

    commit

    The configuration is committed.

Configuring MSCP Channels

This section describes how to configure Master Slave Control Protocol (MSCP) channels.

Context

MSCP channels provide logical connections to transmit data between an access point (AP) and masters. Virtual cluster access uses MSCP channels to deliver virtual path (VP) and virtual circuit (VC) forwarding entries.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    virtual-cluster-access

    The virtual cluster access view is displayed.

  3. Run:

    admin  ip-address

    A management IP address is configured for the node.

    A loopback interface address is used as a node's management IP address.

  4. Run:

    role master

    The node is configured as a master.

  5. (Optional) Run:

    authentication keychain keychain-name

    Keychain authentication is configured to authenticate the connections between an AP and a master and between the primary and secondary masters.

    To ensure that the connection between the local and remote nodes can be established, specify the same keychain for the local and remote nodes.

  6. (Optional) Run:

    ap name name ip ip-address

    A name is configured for a specified AP.

    To use an AP's name to bind a Remote-AP interface to the AP's attachment circuit (AC) interface, you must perform this step. The ip-address parameter specifies the management IP address of an AP.

  7. Run:

    commit

    The configuration is committed.

Configuring VCs

This section describes how to configure VCs. The primary master calculates VC forwarding entries and advertises the calculation results to the secondary master. The primary and secondary masters then deliver VC forwarding entries to access points (APs). A master uses a Remote-AP interface to terminate a VC to an AP.

Context

A VC can be established using a Remote-AP interface. This table describes VC configurations in different service scenarios.
Service Scenario Configuration

Ethernet service (multiple base stations are located on different network segments)

Create a Remote-AP interface and bind it to an AP's attachment circuit (AC) interface.

Ethernet service (multiple base stations are located on the same network segment)

  1. Create a Remote-AP interface and bind it to an AP's AC interface.
  2. Add the Remote-AP interface to a vBridge broadcast domain.

Time division multiplexing (TDM)

Create a Remote-AP interface and bind it to an AP's AC interface.

Procedure

  • Configure VCs for Ethernet services (multiple base stations are located on different network segments).
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      interface remote-ap interface-number

      A Remote-AP interface is created, and the Remote-AP interface view is displayed.

    3. Run:

      bind ap { name ap-name | ip ip-address } interface interface-type interface-number

      The Remote-AP interface is bound to a specified AP's AC interface.

    4. (Optional) Run:

      mtu mtu

      The maximum transmission unit (MTU) for a Remote-AP interface is set.

      By default, the MTU is 1500 bytes.

    5. Run:

      connect-slot slot-id

      A specified slot is associated with the Remote-AP interface.

    6. (Optional) Configure a Media Access Control (MAC) address for the Remote-AP interface.

      1. Run the quit command to return to the system view.

      2. Run the slot slot-id command to enter the slot view.

      3. Run the virtual-cluster-access-mac mac-address command to configure a MAC address for the Remote-AP interface.

        NOTE:

        By default, all Remote-AP interfaces have the same MAC address, which results in a forwarding error on the Layer 2 network. To resolve this issue, run the virtual-cluster-access-mac command to change the MAC addresses configured for Remote-AP interfaces.

    7. Run:

      commit

      The configuration is committed.

  • Configure VCs for Ethernet services (multiple base stations are located on the same network segment).
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      interface vbridge interface-number

      A vBridge interface is created, and the vBridge interface view is displayed.

    3. Run:

      connect-slot slot-id

      A specified slot is associated with the vBridge interface.

    4. (Optional) Configure a MAC address for the vBridge interface.

      1. Run:

        quit

        Return to the system view.

      2. Run:

        slot slot-id

        The slot view is displayed.

      3. Run:

        virtual-cluster-access-mac mac-address

        A MAC address for the vBridge interface is configured.

        NOTE:

        By default, all vBridge interfaces have the same MAC address, which results in a forwarding error on the Layer 2 network. To resolve this issue, run the virtual-cluster-access-mac command to change the MAC addresses configured for vBridge interfaces.

    5. Run:

      quit

      Return to the system view.

    6. Run:

      interface remote-ap interface-number

      A Remote-AP interface is created, and the Remote-AP interface view is displayed.

    7. Run:

      bind ap { name ap-name | ip ip-address } interface interface-type interface-number

      The Remote-AP interface is bound to a specified AP's AC interface.

    8. Run:

      interface vbridge interface-number

      The Remote-AP interface is added to a vBridge broadcast domain.

    9. Run:

      commit

      The configuration is committed.

  • Configure VCs for TDM services.
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      interface remote-ap interface-number

      A Remote-AP interface is created, and the Remote-AP interface view is displayed.

    3. Run:

      bind ap { name ap-name | ip ip-address } interface interface-type interface-number

      The Remote-AP interface is bound to a specified AP's AC interface.

    4. (Optional) Run:

      mtu mtu

      The maximum transmission unit (MTU) for a Remote-AP interface is set.

      Using the default MTU (1500 bytes) is recommended. This is because some protocols have requirements for minimum MTU values. If the MTU value set for a protocol is too small, neighbor relationships may fail to be established.

    5. Run:

      commit

      The configuration is committed.

(Optional) Configuring BFD Session Parameters

To control BFD's sensitivity to faults, configure BFD for VP and BFD for VC session parameters.

Context

Virtual cluster access uses dynamic BFD to monitor VP and VC connectivity. If BFD detects a fault, a traffic protection switchover is triggered. You can configure BFD session parameters to control BFD's sensitivity to faults, preventing intermittent network faults from resulting in unnecessary traffic switchovers.
NOTE:
  • After virtual cluster access is configured, BFD sessions are automatically established and you do not need to separately enable them.
  • Masters and APs may support different BFD session parameter values. If the BFD session parameter values configured on a master are less than the minimum BFD session parameter values supported by an AP, the AP uses the default BFD session parameter values to negotiate with the master to determine parameter values used for BFD sessions.

Procedure

  • Configure BFD for VP session parameters.
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      virtual-cluster-access

      The virtual cluster access view is displayed.

    3. Run:

      vp bfd { min-tx-interval tx-interval | min-rx-interval rx-interval | detect-multiplier multiplier }*

      BFD for VP session parameters are configured.

    4. Run:

      commit

      The configuration is committed.

  • Configure BFD for VC session parameters.

    NOTE:

    BFD for VC session parameter configurations take effect only for Ethernet services.

    You can configure BFD for VC session parameters in either the virtual cluster access view or the Remote-AP interface view. If you configure BFD for VC session parameters in both views, the configuration in the Remote-AP interface view is preferentially selected.

    • In the virtual cluster access view:
      1. Run the system-view command to enter the system view.

      2. Run the virtual-cluster-access command to enter the virtual cluster access view.

      3. Run the vc bfd { min-tx-interval tx-interval | min-rx-interval rx-interval | detect-multiplier multiplier }* command to configure BFD for VC session parameters.

      4. Run the commit command to commit the configuration.

    • In the Remote-AP interface view:
      1. Run the system-view command to enter the system view.

      2. Run the interface remote-ap interface-number command to enter the Remote-AP interface view.

      3. Run the vc bfd { min-tx-interval tx-interval | min-rx-interval rx-interval | detect-multiplier multiplier }* command to configure BFD for VC session parameters.

      4. Run the commit command to commit the configuration.

(Optional) Configuring Bit-Error-Triggered Protection Switching for Virtual Cluster Access

In scenarios where VC and VP bit error detection are enabled, you can configure bit-error-triggered protection switching to protect services against bit errors.

Context

Virtual cluster access uses VC and VP bit error detection to protect services against bit errors.

  • In virtual cluster access scenarios, when VPs are established to transmit services with high quality requirements, bit errors on VPs may cause service interruptions. To address this problem, enable VP bit error detection. The master then calculates forward and backward VP BERs to determine whether to perform VP switching.

    To precisely control bit-error-triggered VP switching based on the sensitivity of services to bit errors, configure the thresholds for bit-error-triggered protection switching and revertive switching.

  • If the primary and backup VPs of a VP protection group are both in the excessive BER state or the backup VP fails, bit-error-triggered VP switching cannot protect traffic against bit errors, but bit-error-triggered VC switching can do so.

Procedure

  • Configure VP bit error detection.
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      virtual-cluster-access

      The virtual cluster access view is displayed.

    3. Run:

      vp bit-error-detection [  threshold switch switch-coe switch-pow resume resume-coe resume-pow ]

      VP bit error detection is enabled.

    4. Run:

      commit

      The configuration is committed.

  • Configure VC bit error detection.

    NOTE:

    VC bit error detection can be configured in either the virtual cluster access view or the Remote-AP interface view. If VC bit error detection is configured in both views, the configuration in the Remote-AP interface view takes preference over the configuration in the virtual cluster access view.

    • Configure VC bit error detection in the virtual cluster access view:
      1. Run:

        system-view

        The system view is displayed.

      2. Run:

        virtual-cluster-access

        The virtual cluster access view is displayed.

      3. Run:

        vc bit-error-detection

        VC bit error detection is enabled.

      4. Run:

        commit

        The configuration is committed.

    • In the Remote-AP interface view:
      1. Run:

        system-view

        The system view is displayed.

      2. Run:

        interface remote-ap interface-number

        The Remote-AP interface view is displayed.

      3. Run:

        vc bit-error-detection

        VC bit error detection is enabled.

      4. Run:

        commit

        The configuration is committed.

Checking the Configurations

After configuring IP radio access network (RAN) virtual cluster access, check the configurations.

Prerequisites

IP RAN virtual cluster access has been configured.

Procedure

  • Run the display virtual-cluster-access command to check master information.
  • Run the display virtual-cluster-access ap command to check access point (AP) information.
  • Run the display virtual-cluster-access ap-interface command to check AP interface information.
  • Run the display virtual-cluster-access label-space command to check label space information.
  • Run the display virtual-cluster-access regist-master command to check peer master information.
  • Run the display virtual-cluster-access interface-binding command to check Remote-AP interface information.
  • Run the display isis virtual-cluster-access advertisements command to check virtual cluster access information advertised by a specified Intermediate System to Intermediate System (IS-IS) process.
  • Run the display virtual-cluster-access vp statistics command to check statistics about virtual paths (VPs).
  • Run the display virtual-cluster-access vp [ source source-address ] [ destination destination-address ] [ verbose ] command to check VP information.
  • Run the display virtual-cluster-access vp protect-group [ source source-address ] [ destination destination-address ] [ verbose ] command to check detailed information about a VP protection group.
  • Run the display virtual-cluster-access vc [ interface interface-type interface-number ] command to check virtual circuit (VC) information on a specified interface.
  • Run the display bfd session all command to check all Bidirectional Forwarding Detection (BFD) session information.

Example

Run the display virtual-cluster-access command to view master information.

<HUAWEI> display virtual-cluster-access
                         Virtual Cluster Accesss Information
--------------------------------------------------------------------------------
Mode          : Master                  AdminIP       : 1.1.1.1  

Run the display virtual-cluster-access ap command to view AP information.

<HUAWEI> display virtual-cluster-access ap
                                 Ap Information
Total 2 record(s) :
--------------------------------------------------------------------------------
 Ap ID             : 3.1.2.9
 Primary Master ID : 8.1.2.9            Secondary Master ID : 7.1.2.9
 Compute Master ID : 7.1.2.9
 State             : Running            Gr State            : Idle
 Up Time           : 2014-01-14 09:03:08

 Ap ID             : 4.1.2.9
 Primary Master ID : 8.1.2.9            Secondary Master ID : 7.1.2.9
 Compute Master ID : 7.1.2.9
 State             : Running            Gr State            : Idle
 Up Time           : 2014-01-14 09:03:01
--------------------------------------------------------------------------------

Run the display virtual-cluster-access ap-interface command to view AP interface information.

<HUAWEI> display virtual-cluster-access ap-interface
                            Ap Interface Information
Total 6 record(s) found :
--------------------------------------------------------------------------------
ApID                Interface           IfIndex             State
--------------------------------------------------------------------------------
1.1.1.9             GigabitEthernet1/0/0      6             Up                  
11.11.11.9          GigabitEthernet2/0/0      4             Up                  
11.11.11.9          GigabitEthernet2/0/1      6             Up                  
11.11.11.9          GigabitEthernet2/0/2      7             Down                
22.22.22.9          GigabitEthernet2/0/3      4             Up                  
22.22.22.9          GigabitEthernet3/0/0      6             Up                  
--------------------------------------------------------------------------------

Run the display virtual-cluster-access vp command to view VP information, including VP forwarding entries and the BFD for VP session status.

<HUAWEI> display virtual-cluster-access vp
 -------------------------------------------------------------------------------
                             End Point VP
 -------------------------------------------------------------------------------
   Source Node ID : 4.1.2.9             Dest Node ID  : 8.1.2.9
   Group ID       : 2817                VP ID         : 161
   VP Role        : Egress              Next Node ID  : --
   In/Out Label   : 4319/--             Out Interface : --
   Next Hop Mac   : --
   VP Age         : 0d04h49m55s         MTU           : 1500
   OAM State      : --                  OAM Age       : --

   Source Node ID : 8.1.2.9             Dest Node ID  : 4.1.2.9
   Group ID       : 2817                VP ID         : 161
   VP Role        : Ingress             Next Node ID  : 4.1.2.9
   In/Out Label   : --/16               Out Interface : GigabitEthernet1/0/0
   Next Hop Mac   : e468-a3f9-e15b
   VP Age         : 0d04h49m55s         MTU           : 1500
   OAM State      : Up                  OAM Age       : 0d04h49m44s

   Source Node ID : 3.1.2.9             Dest Node ID  : 8.1.2.9
   Group ID       : 2818                VP ID         : 162
   VP Role        : Egress              Next Node ID  : --
   In/Out Label   : 4320/--             Out Interface : --
   Next Hop Mac   : --
   VP Age         : 0d04h49m50s         MTU           : 1500
   OAM State      : --                  OAM Age       : --

   Source Node ID : 8.1.2.9             Dest Node ID  : 3.1.2.9
   Group ID       : 2818                VP ID         : 162
   VP Role        : Ingress             Next Node ID  : 4.1.2.9
   In/Out Label   : --/17               Out Interface : GigabitEthernet1/0/0
   Next Hop Mac   : e468-a3f9-e15b
   VP Age         : 0d04h49m50s         MTU           : 1500
   OAM State      : Up                  OAM Age       : 0d04h49m39s 

Run the display virtual-cluster-access vp protect-group verbose command. The command output shows that the statuses of the VP protection group and BFD for VP session are both UP.

<HUAWEI> display virtual-cluster-access vp protect-group verbose
 Source Node ID : 8.1.2.9            Dest Node ID : 3.1.2.9
 Group ID       : 2818               State        : Up
 Active VP      : Working            Age          : 0d00h43m06s
 BitError       : Stop
 Working VP:
   VP ID          : 162             Next Hop       : 4.1.2.9
   OAM State      : Up              In/Out Label   : 4320/17
   Out Interface  : GigabitEthernet1/0/0
   BitError       : Stop
 Protection VP:
   VP ID          : --              Next Hop       : 0.0.0.0
   OAM State      : --              In/Out Label   : --/--
   Out Interface  : --
   BitError       : Stop

 Source Node ID : 8.1.2.9            Dest Node ID : 4.1.2.9
 Group ID       : 2817               State        : Up
 Active VP      : Working            Age          : 0d00h43m11s
 BitError       : Stop
 Working VP:
   VP ID          : 161             Next Hop       : 4.1.2.9
   OAM State      : Up              In/Out Label   : 4319/16
   Out Interface  : GigabitEthernet1/0/0
   BitError       : Stop
 Protection VP:
   VP ID          : --              Next Hop       : 0.0.0.0
   OAM State      : --              In/Out Label   : --/--
   Out Interface  : --  
   BitError       : Stop

Run the display virtual-cluster-access vc command. The command output shows that the statuses of the VCs between the AP and primary master and between the AP and secondary master are both up.

<HUAWEI> display virtual-cluster-access vc
 -----------------------------------------------------------
 MasterID        ApID            State ApIF
 -----------------------------------------------------------
 5.5.5.9         2.2.2.9         up    GigabitEthernet1/0/0
 6.6.6.9         2.2.2.9         up    GigabitEthernet2/0/0

Run the display virtual-cluster-access vc interface interface-type interface-number command to view VC information on a specified interface.

<HUAWEI> display virtual-cluster-access vc interface GigabitEthernet 1/0/0
 Client Interface     : Remote-Ap1
   Master ApId        : 3.3.3.9
   Ap ApId            : 1.1.1.9
   Ap Interface       : GigabitEthernet1/0/0
   VC Type            : Ethernet Raw Mode
   VC State           : Up         AC State            : Up
   Forwarding State   : Forwarding
   Local VC Label     : 32860      Remote VC Label     : 19
   Local VC MTU       : 1500       Remote VC MTU       : 1500
   Local Control Word : Disable    Remote Control Word : Disable
   Local VCCV                   : Disable
   Remote VCCV                  : Disable
   VP Forwarding Group Count    : 1
   No. 1 VP Forwarding Group ID : 1
   Create Time                  : 0 days, 0 hours, 0 minutes, 49 seconds
   Up Time                      : 0 days, 0 hours, 0 minutes, 49 seconds
   Last Change Time             : 0 days, 0 hours, 0 minutes, 49 seconds
   VC Total Up Time             : 0 days, 0 hours, 0 minutes, 49 seconds
   VC Last Up Time              : 2014-08-17 00:26:49

Run the display bfd session all command to view all BFD session information. D_VTE_LSP and D_VPW(S) indicate that virtual cluster access BFD sessions have been established.

<HUAWEI> display bfd session all
(w): State in WTR 
(*): State is invalid
--------------------------------------------------------------------------------
Local Remote     PeerIpAddr      State     Type        InterfaceName
--------------------------------------------------------------------------------
8192  16390      5.5.5.9         Up        D_VTE_LSP   Tunnel18433
8193  16386      6.6.6.9         Up        D_VTE_LSP   Tunnel18434
8194  16387      6.6.6.9         Up        D_VPW(S)    GigabitEthernet0/0/3
--------------------------------------------------------------------------------
     Total UP/DOWN Session Number : 3/0   
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Updated: 2018-07-12

Document ID: EDOC1100028541

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