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Configuring NetRef Multiple Master Nodes (CTP Menu)

NetRef primary backup operation involves a new packet flow from the primary node to all the backup nodes. These timing packets are sent at a rate of approximately 4.5 packets per second.

Note: In this topic, the terms Primary and Backup refer to master and slave operations or nodes, respectively.

To configure network node reference with multiple master nodes:

  1. From the Main Menu, select 2) Node Synchronization
  2. Select 6) NetRef to configure NetRef configuration parameters.

    Note: You can select 1) 1st Priority, Reference 0, 2) 2nd Priority, Reference 1, 3) 3rd Priority, Reference 2, 4) 4th Priority, Reference 3, and 5) 5th Priority, Reference to specify the prioritized node clock references. An external reference input and any of the serial interfaces may be used for the node reference clock. Reference frequencies must be 32 KHz, n x 64 KHz, or 1,544 KHz up to a maximum of 4096 KHz (2048 KHz maximum on the CTP1002).

  3. From the NetRef Menu, 1) NetRef to enable NetRef on the CTP device..
    Enable NetRef (0=Off, 1=Master, 2=Slave, 3=Adaptive Bundle)? (0-3)[2]:
  4. Enter 2 to select Slave mode.
  5. From the NetRef Menu, select 2) NetRef Master IP (Priority 1). and specify the IP address of the NetRef master node, which is assigned a priority of 1.
  6. From the NetRef Menu, select 3) NetRef Master IP (Priority 1). and specify the IP address of the NetRef master node, which is assigned a priority of 2.
  7. From the NetRef Menu, select 4) NetRef Master IP (Priority 1). and specify the IP address of the NetRef master node, which is assigned a priority of 3.
  8. From the NetRef Menu, select 5) NetRef Master IP (Priority 1). and specify the IP address of the NetRef master node, which is assigned a priority of 4.
    Please select a number from the following list:
    -------------------------------------
     0) Exit to Shell
     1) Bundle Operations
     2) Node Synchronization
     3) Node Summary
     4) Node Diagnostics
     5) Node Operations
     6) Save Running Database to Flash
    ------------ Your choice [3]: 2
    
    ==========================================================================
    = (ctp_74 06/24/15 19:25:18  UTC) | Node Synchronization Menu
    ==========================================================================
    
    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:                    Disabled
     7) 32 kHz Ref Output:         NO
     8) Query Node Sync Status
     9) Measure Ref Inputs
    10) Calibrate Node to Current Reference
    ------------ Your choice [6]: 6
    
    
    ==========================================================================
    = (ctp_74 06/24/15 19:25:38  UTC) | NetRef Menu
    ==========================================================================
    
    Please select a number from the following list:
    -------------------------------------
     0) Back to Previous Menu
     1) NetRef:             Disabled
    ------------ Your choice [1]: 1
    Enable NetRef (0=Off, 1=Master, 2=Slave, 3=Adaptive Bundle)? (0-3)[0]: 2
    
    
    ==========================================================================
    = (ctp_74 06/24/15 19:25:42  UTC) | NetRef Menu
    ==========================================================================
    
    Please select a number from the following list:
    -------------------------------------
     0) Back to Previous Menu
     1) NetRef:             Slave
     2) NetRef Master IP (Priority 1):  127.0.0.1
     3) NetRef Master IP (Priority 2):  127.0.0.1
     4) NetRef Master IP (Priority 3):  127.0.0.1
     5) NetRef Master IP (Priority 4):  127.0.0.1
    ------------ Your choice [2]: 2
    
    Configure a NetRef Master?  n[y]: y
    
    Enter remote node IP address for NetRef:(rtn for 127.0.0.1)? 10.216.118.73
    
    
    ==========================================================================
    = (ctp_74 10/30/15 12:22:08  UTC) | NetRef Menu
    ==========================================================================
    
    Please select a number from the following list:
    -------------------------------------
     0) Back to Previous Menu
     1) NetRef:             Slave
     2) NetRef Master IP (Priority 1):  10.216.118.73
     3) NetRef Master IP (Priority 2):  127.0.0.1
     4) NetRef Master IP (Priority 3):  127.0.0.1
     5) NetRef Master IP (Priority 4):  127.0.0.1
    ------------ Your choice [2]: 3
    
    Configure a NetRef Master?  n[y]: y
    
    Enter remote node IP address for NetRef:(rtn for 127.0.0.1)? 10.216.118.86
    
    
    ==========================================================================
    = (ctp_74 10/30/15 12:48:56  UTC) | NetRef Menu
    ==========================================================================
    
    Please select a number from the following list:
    -------------------------------------
     0) Back to Previous Menu
     1) NetRef:             Slave
     2) NetRef Master IP (Priority 1):  10.216.118.73
     3) NetRef Master IP (Priority 2):  10.216.118.86
     4) NetRef Master IP (Priority 3):  127.0.0.1
     5) NetRef Master IP (Priority 4):  127.0.0.1
    ------------ Your choice [3]: 4
    
    Configure a NetRef Master?  n[y]: y
    
    Enter remote node IP address for NetRef:(rtn for 127.0.0.1)? 10.216.118.90
    
    
    ==========================================================================
    = (ctp_74 10/30/15 12:49:04  UTC) | NetRef Menu
    ==========================================================================
    
    Please select a number from the following list:
    -------------------------------------
     0) Back to Previous Menu
     1) NetRef:             Slave
     2) NetRef Master IP (Priority 1):  10.216.118.73
     3) NetRef Master IP (Priority 2):  10.216.118.86
     4) NetRef Master IP (Priority 3):  10.216.118.90
     5) NetRef Master IP (Priority 4):  127.0.0.1
    ------------ Your choice [4]: 5
    
    Configure a NetRef Master?  n[y]: y
    
    Enter remote node IP address for NetRef:(rtn for 127.0.0.1)? 10.216.118.88
    
    
    ==========================================================================
    = (ctp_74 10/30/15 12:49:12  UTC) | NetRef Menu
    ==========================================================================
    
    Please select a number from the following list:
    -------------------------------------
     0) Back to Previous Menu
     1) NetRef:             Slave
     2) NetRef Master IP (Priority 1):  10.216.118.73
     3) NetRef Master IP (Priority 2):  10.216.118.86
     4) NetRef Master IP (Priority 3):  10.216.118.90
     5) NetRef Master IP (Priority 4):  10.216.118.88
    ------------ Your choice [5]:
    
    

Note: When a node is configured for NetRef backup operation, the remote address must be configured to that of the primary node. Likewise, the NetRef primary node must be configured with the IP address of the NetRef backup node. A NetRef primary node can be configured to send data packets to up to 10 NetRef backup nodes.

Rate selection and clock configuration allow the serial interface rate to be configured through the software. Rates supported range from less than 300 bps to 12.288 Mbps (in subhertz increments). You can configure the CTP systems by using the menu interface to provide multiple prioritized node clock references. An external reference input and any of the serial interfaces may be used for the node reference clock. Reference frequencies must be 32 KHz, n x 64 KHz, or 1,544 KHz up to a maximum of 4096 KHz (2048 KHz maximum on the CTP1002).

Follow the onscreen instructions and configure the options as described inTable 54.

Table 54: Configuring Multiple NetRef Master Node IP Addresses

FieldFunctionYour Action

NetRef Master IP (Priority)

Specifies whether you want to configure multiple master nodes with priorities, which can be used to transmit clocking information to the backup nodes in NetRef.

Enter 2, 3, 4, and 5 to configure NetRef master nodes with priorities 1, 2, 3, and 4, respectively.

Configure a NetRef Master? n[y]

Specifies whether you want to configure a NetRef master node.

Specify y or n.

Enter remote node IP address for NetRef

Specifies the IP address of the NetRef master node..

Specify IP address of the NetRef master node assigned with different priorities.

Specify rtn to set the IP address of 127.0.0.1 interface that is prompted by the system to be specified as the default IPv4 address of the master node. For example, if the prompt displays (rtn for 127.0.0.1), and if you specify rtn, 127.0.0.1 is set as the default IP address.

Modified: 2018-01-29