Echelon OpenLNS Commissioning Tool - Manual (Page 121)

OpenLNS CT User’s Guide 105
because it allows OpenLNS CT to optimize network traffic and
determine automatically the channel to which each device is
attached.
You can select Repeater to forward all valid packets received on
one channel to the other channel. A Permanent Repeater behaves
similarly, but its type cannot be changed in the network after the
router is created.
You can select Bridge to forward all valid packets that match the
network domain. A Permanent Bridge behaves similarly, but its
type cannot be changed in the network after the router is created.
OpenLNS CT allows subnets to span permanent repeaters and
bridges, but not non-permanent types. You can use permanent
repeaters and bridges to preserve subnet IDs, and non-permanent
types to maintain flexibility in order to change the router type later.
Authentication
Select whether authentication is enabled for communication with
OpenLNS CT. Authentication can only be enabled for a router if
authentication is enabled for the OpenLNS CT drawing. To check
whether authentication is enabled for the OpenLNS CT drawing,
click Add-ins, click LonWorks Network, click Network
Properties, and then click the Authentication tab.
Existing Key Specify the authentication key if the router has already been installed
on another network with an authentication key. The authentication
key can be up to 12 hexadecimal digits for 48-bit authentication or
24 hexadecimal digits for 96-bit authentication. If you specify a key
of less than 12 digits, OpenLNS CT adds leading zeroes to create a
12-digit key.
Note: OpenLNS supports only a single authentication key for all
authenticated devices; therefore, if you use 96-bit authentication
keys, all devices that are authenticated must support 96-bit
authentication.
Priority Indicate whether priority messaging is enabled on one or both sides
of the router. Priority messaging consumes network resources and
bandwidth, and can degrade network performance. Select priority
messaging when critical devices that use priority messaging are on
one of the channels attached to the router and need to forward
priority messages through the router. If you enable priority
messaging, select whether the priority slot will be determined
automatically or manually. If you select Manual, enter the priority
slot in the Slot box.
7. If you selected the Commission Device check box on the first page of the wizard, the first window
for commissioning the router opens. See Commissioning a Device in Chapter 5, Installing
Networks, for instructions on commissioning the router.
If you did not select the Commission Device check box on the first page of the wizard, click
Finish to add the router SmartShape to your OpenLNS CT drawing.
Using Automatic Channel Selection for Routers
You can use automatic channel selection to enable OpenLNS CT to automatically select the
appropriate channels for a new router, skipping the New Router Wizard. This feature lets you create a
new router with a single click and drag. To enable automatic channel selection in your OpenLNS CT
drawing, see Using Automatic Channel Selection for Devices earlier in this chapter.