10
Introduction to LonWorks Routers
forwarding is disabled) in the subnet forwarding table. The forwarding flag for
the destination address is then checked to determine whether the message
should be forwarded or dropped. The forwarding flags are all cleared whenever
the router is reset, so the learning process restarts after a reset.
The forwarding flag for a given subnet should never be cleared on both sides of a
router. However, the flag can be cleared on both sides if a device is moved from
one side of a router to the other side. For example, if subnet 1 is located on side
A of a router, the router will learn subnet 1’s location as soon as it receives a
message generated by any device in subnet 1. If any subnet 1 device is moved to
side B without reinstalling it, the router will learn that subnet 1 is also on side B,
and will stop forwarding subnet 1 messages to side A. The router detects this
error and logs it, as described in Chapter 7,
Network Management Messages
, on
page 71.
Figure 4
. Configured and Learning Router Forwarding Rules, Part 1
Summary of Contents for 42150
Page 1: ...LONWORKS Router User s Guide 078 0018 01E...
Page 6: ......
Page 9: ...Appendix A Communications Parameters for LonWorks Routers 81 Communications Parameters 82...
Page 10: ......
Page 48: ......
Page 53: ...LonWorks Router User s Guide 43 Figure 22 Router 5000 Mechanical Specifications...
Page 54: ......
Page 57: ...LonWorks Router User s Guide 47 Figure 23 RTR 10 Motherboard Example Schematic...
Page 61: ...LonWorks Router User s Guide 51 Figure 26 Router 5000 Motherboard Example Schematic Core...
Page 62: ...52 Developing a LonWorks Router Figure 27 Router 5000 Motherboard Example Schematic Network...
Page 68: ......
Page 80: ......
Page 99: ...www echelon com...
