HP 7102dl - ProCurve Secure Router Configuration Manual page 1072

Using the Web Browser Interface for Advanced Configuration Tasks
Routing
16-158
Figure 16-120. Setting OSPF Parameters for Individual Interfaces
6. By default, the ProCurve Secure Router determines whether an interface
is on a point-to-point or multi-access network by its duplex setting. This
setting can be important because OSPF provides special options for multi-
access subnets. Routers elect a designated router (DR) and backup DR
(BDR). Each router in the subnet only exchanges LSAs with these two
other routers, thus minimizing OSPF overhead.
If necessary, you can override the automatically-determined network
setting. Select the correct type from the Network Type pull-down menu.