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Displaying the NetRef Node Synchronization Information (CTP Menu)

To display the configured NetRef node synchronization details using the CTP Menu:

  1. From the Main Menu, select 2) Node Synchronization
  2. Select 8) Query Node Sync Status to view NetRef node details.

    The Slave Node Sync query displays the IP address of that master node to which it is locked. The query output also displays the IP addresses of all the configured masters along with their priorities. When a switchover of the master nodes occurs, the slave node sync query displays the IP address of the switched master node. In the following example, the slave node is locked to the primary master (10.216.118.73).

    Node Synchronization Info
    =========================
    Reference in use:    Slave of 10.216.118.86
    NetRef State:        Maintain (last adj -0.217 ppm)
    
    NetRef Masters:
            10.216.118.73 Priority 1
            10.216.118.86 Priority 2
            10.216.118.90 Priority 3
            10.216.118.88 Priority 4
    

    When the primary master (10.216.118.73) goes down, the slave node locks to the next highest priority master (10.216.118.86) as illustrated in the following example:

    
    
    Please select a number from the following list:
    -------------------------------------
     0) Back to Previous Menu
     1) 1st Priority, Reference 0: Disabled
     2) 2nd Priority, Reference 1: Disabled
     3) 3rd Priority, Reference 2: Disabled
     4) 4th Priority, Reference 3: Disabled
     5) 5th Priority, Reference 4: Disabled
     6) NetRef:                    Slave
     7) 32 kHz Ref Output:         NO
     8) Query Node Sync Status
     9) Measure Ref Inputs
    10) Calibrate Node to Current Reference
    ------------ Your choice [6]: 8
    
    Node Synchronization Info
    =========================
    Reference in use:    Slave of 10.216.118.86
    NetRef State:        Maintain (last adj -0.217 ppm)
    
    NetRef Masters:
            10.216.118.73 Priority 1
            10.216.118.86 Priority 2
            10.216.118.90 Priority 3
            10.216.118.88 Priority 4
    
    

    Table 58 describes the fields corresponding to the configured NetRef nodes and synchronization details displayed in the output.

Table 58: Display of Node Synchronization Details for NetRef in the CTP Menu

Field Name

Field Description

Reference in use

Displays the IP address of the NetRef master node that is being referenced and used by the slave or backup node.

NetRef State

Displays the NetRef state, such as Maintain, Aggressive, Starvation, or Wait. Also, this field displays the number of packets per minute, which when reached, causes the clocking algorithm to change, and which constrains the frequency adjustments to the adaptive clock.

If all the four master nodes goes down, the NetRef state remains in Starvation state and no switching will take place. When the NetRef state of the slave node is Maintain and the primary master goes down, the slave node is unable to receive the packets within the last 20 seconds. Therefore, the NetRef state of the slave node moves from Maintain state to Starvation state and switching takes place. When the NetRef state of the slave node is Aggressive and the primary master goes down, the slave node is unable to receive the packets within the last 20 seconds. Therefore, the NetRef state of the slave node transitions from Aggressive state to Starvation state and switching will take place.

NetRef Masters

Priority 1

Displays the IP address of the NetRef master node assigned with priority 1.

Priority 2

Displays the IP address of the NetRef master node assigned with priority 2.

Priority 3

Displays the IP address of the NetRef master node assigned with priority 3.

Priority 4

Displays the IP address of the NetRef master node assigned with priority 4.

Modified: 2015-11-17