Section 14. PakBus Overview
134
• Routers are measurement or telecommunications devices that route packets
to other linked routers or leaf nodes.
• Routers can be branch routers. Branch routers only know as neighbors
central routers, routers in route to central routers, and routers one level
outward in the network.
• Routers can be central routers. Central routers know the entire network. A
PC running LoggerNet is typically a central router.
• Routers can be router-capable dataloggers or communications devices.
The CR200(X) is always a leaf node. It cannot be configured as a router. The
network shown in FIGURE. PakBus Network Addressing (p. 134) contains 6
ro
uters and 8 leaf nodes.
Figure 49: PakBus Network Addressing.
LoggerNet is configured by default as a router and can route datalogger to
datalogger communications.
14.3 Router and Leaf Node Configuration
Consult APPENDIX. Router and Leaf Node Hardware (Appendix p. 33) for a
table of available PakBus® leaf node and router devices.
14.4 Linking Nodes: Neighbor Discovery
To form a network, nodes must establish links with neighbors (adjacent nodes).
Links are established through a process called discovery. Discovery occurs when
nodes exchange hellos. A hello exchange occurs during a hello-message
between two nodes.
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