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NE20E-S2 V800R010C10SPC500 Configuration Guide - System Management 01

This is NE20E-S2 V800R010C10SPC500 Configuration Guide - System Management
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Configuring 1588 ATR

Configuring 1588 ATR

In a 1588 ATR domain, a clock client establishes a client/server relationship only with a remote clock server. The client initiates unicast negotiation requests to the server and uses PTP packets to implement clock recovery.

Pre-configuration Tasks

Before configuring 1588 ATR, complete the following tasks:

  • Configure static routes or IGP to ensure reachable routes among nodes.

  • Configure the clock server to properly process clock signals from the BITS source.

Configuration Procedure

Figure 13-1 Flowchart for configuring 1588 ATR

Configuring Unicast Negotiation on a 1588 ATR Client

A 1588 ATR client needs to be enabled with unicast negotiation so that it can use Layer 3 unicast packets to establish clock links with routers and use PTP packets to implement time synchronization over a third-party network.

Context

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.

Configuring Unicast Negotiation on a 1588 ATR Server

An router that functions as a 1588 ATR server needs to be enabled with unicast negotiation so that it can use Layer 3 unicast packets to establish clock links with a 1588 ATR client and use PTP packets to implement time synchronization over a third-party network.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run ptp-adaptive enable

    1588 ATR is enabled on the router.

  3. Run ptp-adaptive device-type server

    The router is configured to function as a 1588 ATR server.

  4. Run ptp-adaptive time profile

    The router is configured to support ITU-T G.8275.2.

    After the ptp-adaptive time profile command is run, the default value of the clock domain changes to 44, and the value range changes to 44 to 63.

  5. (Optional) Run ptp-adaptive domain domain-value

    A 1588 ATR domain is configured for the router.

    NOTE:
    The 1588 ATR client and server must be in the same clock domain.

  6. Run ptp-adaptive local-ip ip-address

    The local IP address used for implementing Layer 3 unicast negotiation is configured.

    During Layer 3 unicast negotiation, a 1588 ATR client initiates a connection request to a 1588 ATR server. The local IP address and server IP address uniquely identify a 1588 ATR Layer 3 unicast negotiation connection. Specifying a local loopback interface IP address as the local IP address is recommended to allow all the packets to be transmitted from the server to the client.

  7. Run ptp-adaptive atr unicast-negotiate enable

    1588 ATR unicast negotiation is enabled on the router.

  8. Enable 1588 ATR on the outbound interface used to transmit 1588 ATR packets.

    1. Run interface interface-type interface-number

      The interface view is displayed.

    2. Run ptp-adaptive atr enable

      1588 ATR is enabled on the interface.

    3. Run commit

      The configuration is committed.

    4. Run quit

      The system view is displayed.

  9. Run commit

    The configuration is committed.

(Optional) Adjusting Unicast Negotiation Parameters

Time synchronization is the basis for normal network operations. 1588 ATR packets should have a higher priority than other service packets so that they can reach the destination in case of network congestion.

Context

This section describes the configuration of unicast negotiation parameters on a 1588 ATR server only. For details about how to configure unicast negotiation parameters on a 1588 ATR client (ATN device or base station), see the configuration manual.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run ptp-adaptive dscp priority-value

    The DSCP priority value is configured for 1588 ATR packets.

  3. Run commit

    The configuration is committed.

Checking the Configurations

After configuring 1588 ATR on an router that functions as a server, check the configurations.

Procedure

  • Run the display ptp-adaptive all command to check all configurations of the 1588 ATR module on the server.
  • Run the display ptp-adaptive config command to check 1588 ATR related configurations on the server.
  • Run the display ptp-adaptive client [ client-id ] command to check configurations of the client from which the 1588 ATR server receives a negotiation request.

Example

# Display all configurations of the 1588 ATR module on the server.

<HUAWEI> display ptp-adaptive all
Device config info
-------------------------------------------------------------------------------
Ptp adaptive state      :enable           Device type        :server
Sync mode               :time             Current state      :master
Packet dscp             :56               Domain value       :44
Local ip                :10.2.2.240       Server board       :3
Profile                 :time
VPN                     :none

Client info
    ID  Ip Address       Clock ID          Mode     Announce  Sync  Delay_resp
-------------------------------------------------------------------------------
0   0   1.1.1.1          2cab00fffec65e58  two-way  1         -7    -7
1   1   2.2.2.2          286ed4fffebcdc76  two-way  1         -7    -7

# Display 1588 ATR related configurations on the server.

<HUAWEI> display ptp-adaptive config
Device config info
-------------------------------------------------------------------------------
Ptp adaptive state      :enable           Device type        :server
Sync mode               :time             Current state      :master
Packet dscp             :56               Domain value       :44
Local ip                :10.2.2.240       Server board       :
3
Profile                 :time
VPN                     :none

Port config info
Name                         ATR enable
-----------------------------------
GigabitEthernet0/1/0         true

# Display configurations of the client with the ID of 0 on the server.

<HUAWEI> display ptp-adaptive client 0
Client id           :0                 IP address          :1.1.1.1
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
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Updated: 2019-01-02

Document ID: EDOC1100055400

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