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NE40E-M2 V800R010C10SPC500 Configuration Guide - System Management 01

This is NE40E-M2 V800R010C10SPC500 Configuration Guide - System Management
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Example for Configuring 1588 ATR in a Dual-Server Scenario

Example for Configuring 1588 ATR in a Dual-Server Scenario

In a 1588 ATR domain, a client can establish a client/server relationship with two remote clock servers and send unicast negotiation requests to these clock servers to implement 1588 ATR time synchronization. Once the master clock server becomes faulty, the client automatically initiates a unicast negotiation request to the slave clock server.

Networking Requirements

On the IP RAN shown in Figure 13-2, time synchronization needs to be performed between NodeBs, but the third-party network (such as a microwave or switch network) does not support 1588v2. In this case, 1588 ATR can be configured to allow time synchronization over the third-party network. NE40Es enabled with 1588 ATR can function as a BC to synchronize time information with upstream devices and as a 1588 ATR server to synchronize time information with NodeBs.

Server1 and Server2 are the master and slave clock servers. A client initiates Layer 3 unicast negotiation requests to both Server1 and Server2 using 1588 ATR packets to obtain time synchronization information. If the client is disconnected from Server1, the client then initiates a Layer 3 unicast negotiation request to Server2 to ensure time synchronization with the clock server.

Figure 13-2 1588 ATR configuration in a dual-server scenario

Configuration Roadmap

NOTE:

This section describes only 1588 ATR related configuration. As shown in Figure 13-2, BCs implement time synchronization using 1588v2. For details about how to configure 1588v2, see 1588v2 Configuration.

The configuration roadmap is as follows:

  1. Configure unicast negotiation on a 1588 ATR client.

  2. Configure unicast negotiation Server1 and Server2.

  3. Adjust parameters of the unicast negotiation between the 1588 ATR client and servers.

Data Preparation

To complete the configuration, you need the following data:

  • Local server's IP address

  • 1588 ATR domain where the servers reside

  • Outbound interface for transmitting 1588 ATR packets

  • DSCP priority value of 1588 ATR packets

Procedure

  1. Configure unicast negotiation on a 1588 ATR client.

    Routers cannot function as a 1588 ATR client (ATN device or base station). For details about how to configure unicast negotiation on a 1588 ATR client, see the configuration manual.

  2. Configure unicast negotiation Server1 and Server2.

    • Configure unicast negotiation on Server1.

      <Server1> system-view
      [~Server1] interface loopback 0
      [*Server1-Loopback0] ip address 1.1.1.1 32
      [*Server1-Loopback0] commit
      [~Server1-Loopback0] quit
      [*Server1] ptp-adaptive enable
      [*Server1] ptp-adaptive device-type server
      [*Server1] ptp-adaptive time profile
      [*Server1] ptp-adaptive domain 45
      [*Server1] ptp-adaptive local-ip 1.1.1.1
      [*Server1] ptp-adaptive atr unicast-negotiate enable
      [*Server1] interface gigabitethernet 0/1/0
      [*Server1-GigabitEthernet0/1/0] ptp-adaptive atr enable
      [*Server1-GigabitEthernet0/1/0] commit
      [*Server1-GigabitEthernet0/1/0] quit
      [*Server1] commit
    • Configure unicast negotiation on Server2.

      <Server2> system-view
      [~Server2] interface loopback 0
      [*Server2-Loopback0] ip address 2.2.2.2 32
      [*Server2-Loopback0] commit
      [~Server2-Loopback0] quit
      [*Server2] ptp-adaptive enable
      [*Server2] ptp-adaptive device-type server
      [*Server2] ptp-adaptive time profile
      [*Server2] ptp-adaptive domain 45
      [*Server2] ptp-adaptive local-ip 2.2.2.2
      [*Server2] ptp-adaptive atr unicast-negotiate enable
      [*Server2] interface gigabitethernet 0/1/0
      [*Server2-GigabitEthernet0/1/0] ptp-adaptive atr enable
      [*Server2-GigabitEthernet0/1/0] commit
      [*Server2-GigabitEthernet0/1/0] quit
      [*Server2] commit

  3. Adjust parameters of the unicast negotiation between the 1588 ATR client and servers.

    • Adjust parameters of the unicast negotiation between the 1588 ATR client and Server1.

      [*Server1] ptp-adaptive dscp 60
      [*Server1] commit
    • Adjust parameters of the unicast negotiation between the 1588 ATR client and Server2.

      [*Server2] ptp-adaptive dscp 60
      [*Server2] commit

  4. Verify the configuration.

    # View all configurations of the 1588 ATR module on the servers. The following example uses the command output on Server1.

    <Server1> display ptp-adaptive all
    Device config info
    -------------------------------------------------------------------------------
    Ptp adaptive state      :enable           Device type        :server
    Sync mode               :time             Current state      :master
    Packet dscp             :60               Domain value       :45
    Local ip                :1.1.1.1          Server board       :3
    Profile                 :time
    VPN                     :none
    
    Client info
        ID  Ip Address       Clock ID          Mode     Announce  Sync  Delay_resp
    -------------------------------------------------------------------------------
    0   0   3.3.3.3          2cab00fffec65e58  two-way  1         -7    -7
    1   1   4.4.4.4          286ed4fffebcdc76  two-way  1         -7    -7
    

    # View 1588 ACR related configurations on the servers. The following example uses the command output on Server1.

    <Server1> display ptp-adaptive config
    Device config info
    -------------------------------------------------------------------------------
    Ptp adaptive state      :enable           Device type        :server
    Sync mode               :time             Current state      :master
    Packet dscp             :60               Domain value       :45
    Local ip                :1.1.1.1          Server board       :
    3
    Profile                 :time
    VPN                     :none
    
    Port config info
    Name                         ATR enable
    -----------------------------------
    GigabitEthernet0/1/0         true
    

    # View configurations of the 1588 ATR client.

    <Server1> display ptp-adaptive client 0
    Client id           :0                 IP address          :3.3.3.3
    Clock id            :2cab00fffec65e58  Mode                :two-way
    Announce interval   :1                 Announce duration   :300s
    Sync interval       :-7                Sync duration       :300s
    Delay_resp interval :-7                Delay_resp duration :300s
    
    Receive packet statistics
    ---------------------------------------------------------------------------
    Signalling          :60                Delay_req           :655778
    
    Send packet statistics
    ---------------------------------------------------------------------------
    Signalling          :60                Announce            :2547
    Sync                :655945            Delay_resp          :655778
    
    Discard packet statistics
    ---------------------------------------------------------------------------
    Signalling          :0
    Delay_req           :0
    

Configuration Files

  • Server1 configuration file

    #
     sysname Server1
    #
     ptp-adaptive enable
     ptp-adaptive device-type server
     ptp-adaptive time profile
     ptp-adaptive domain 45
     ptp-adaptive local-ip 1.1.1.1
     ptp-adaptive atr unicast-negotiate enable
     ptp-adaptive dscp 60
    #
    interface Loopback0
     ip address 1.1.1.1 255.255.255.255
    #
    interface gigabitethernet 0/1/0
     ptp-adaptive atr enable
    # 
    return
  • Server2 configuration file

    #
     sysname Server2
    #
     ptp-adaptive enable
     ptp-adaptive device-type server
     ptp-adaptive time profile
     ptp-adaptive domain 45
     ptp-adaptive local-ip 2.2.2.2
     ptp-adaptive atr unicast-negotiate enable
     ptp-adaptive dscp 60
    #
    interface Loopback0
     ip address 2.2.2.2 255.255.255.255
    #
    interface gigabitethernet 0/1/0
     ptp-adaptive atr enable
    # 
    return
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Updated: 2019-01-02

Document ID: EDOC1100058392

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