Echelon LONWORKS, User Manual, Page: 42 / 68

7-2 Installing a Router
Introduction
To install a router, follow these steps:
1
Define a network topology.
2
Physically attach the router to a L
O N
W
ORKS
network.
3
Connect power to the router.
4
Logically install the router on the network.
5
Test the router installation.
These steps are described in more detail in the following sections.
Defining a Network Topology
There are many possible network topologies when using routers. The first rule for
initial integration is that if a network services tool is used for installation, then a
physical or logical path must exist between the network services tool and the router
targeted for installation. A physical path is created if the network services tool is
connected to the same media as one side of the L
ON
W
ORKS
Router. A logical path is
created if one or more active installed routers exist between the L
ON
W
ORKS
Router and
the network services tool. The routers creating the logical path may be L
ONWORKS
Routers, LonBuilder Routers, or custom routers based on the RTR-10 Router Core Module.
The routers in the logical path must be installed, loaded, and online before the new
router may be added to the network.
When installing routers on a development network, the LonBuilder or LonManager
Protocol Analyzer can be used to verify that a path exists to a router to be installed. To
verify the existence of a logical path, press the service switch of a powered router. If a
physical or logical path to the protocol analyzer exists, this action will increment the
packets received count. A detailed view of the packet log resulting from the previous
action will show a code of 0x7F; this is the message code for an unsolicited service pin
message.
Attaching the Router to a Network
The next step in installation is to physically attach the router to two channels in a
L
ON
W
ORKS
network. It is important to insure that each channel has only one
transceiver type attached to it. Mixing signals from different transceivers will defeat
the collision avoidance algorithms and therefore severely degrade network
performance.
Custom routers based on the RTR-10 Router Core Module are attached to a network as
described in the router developer's documentation. The remainder of this section
describes how to attach the Model 71000 L
ON
W
ORKS
Router.