Specifications

6 - 1
6
CHAPTER6 ASSIGNMENT VI (ROUTING FUNCTION)
6.1 Routing Function
The routing function is used to execute transient transmissions to stations having other
network numbers in a multiple network system.
In order to execute the routing function, it is necessary to set the "Routing parameters" to
associate the network numbers of the request destination and the station that will
function as a bridge*
1
between the networks.
<Stations that require routing parameter setting>
(a) The setting is required for both the transient transmission request source and
relay stations.
(b) For relay stations, two routing settings are required: one from the request
source to the request destination, and the other from the request destination
back to the request source.
(c) Any setting is not required for the request destination.
In the example shown in the diagram on the following page where the transient
transmission is executed from 1N
S3 to 3NS4, the setting is required for the following
three stations:
1) Setting for 1N
S3 that requests the transient transmission
Designate the transfer target network number (3), the relay station
(1N
S4), and the number of the relay network (1) to the relay station.
2) Setting for 1N
S4 that functions as a bridge
Designate the transfer target network number (3), the relay station
(2N
S4), and the number of the relay network (2) to the relay station. It is
not necessary to set the return route because it is designated in the
setting for 2N
S4.
3) Setting for 2N
S4 that functions as a bridge
It is not necessary to set the routing to the transfer target because the
host is on the same network as the transfer target network (3). However,
it is necessary to set the transfer source network number (1) as the
transfer target network number and to designate the relay station (2M
P1),
and the number of the relay network (2) to the relay station in order to
trace a route back to the request source.