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Configuring NetRef for Primary or Backup Operation
Related
Documentation
Support for Multiple Master Nodes to Associate With a Single Slave Node in NetRef
Copyright © 2018, Juniper Networks, Inc.
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 for primary or backup operation:
From the Main Menu, select 2) Node Synchronization
1.
Select 6) NetRef
2.
From the NetRef Menu, 1) NetRef.
3.
Enable NetRef (0=Off, 1=Master, 2=Slave, 3=Adaptive Bundle)? (0-3)[2]:
Enter 1 to select Master mode or 2 to select Slave mode.
4.
Select 2) Remote Address and specify the IP address of the NetRef slave.
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.
Configuring NetRef for Adaptive Bundle Operation on page 120
Network Node Reference Overview on page 118
Network node reference (NetRef) is an extension of the CTP adaptive port clocking.
NetRef can be used to provide node level synchronization across a network. When NetRef
is configured for primary or backup operation, the primary node sends clocking information
to the backup node. The backup node uses an algorithm similar to that used for adaptive
port clocking to control the local node clock so that it follows the clocking of the remote
node. To operate in primary or backup mode, the remote primary node must be configured
as a NetRef primary node with the IP address of the NetRef slave configured. The backup
node must be configured as a NetRef backup node with the IP address of the NetRef
Chapter 2: Configuring CTP Bundles
121
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