You need to enable OSPF on a ScreenOS device.
First, enable the routing instance and then move interfaces into the area and enable those:
set vrouter "trust-vr"FIREWALL-A(trust-vr)->
set router-id 192.168.19.1FIREWALL-A(trust-vr)->
set protocol ospfFIREWALL-A(trust-vr/ospf)->
set interface ethernet0/1 protocol ospf area 0.0.0.0FIREWALL-A->
set interface ethernet0/1 protocol ospf enableFIREWALL-A->
set interface serial1/0 protocol ospf area 0.0.0.0FIREWALL-A->
set interface serial1/0 protocol ospf enable
In ScreenOS, routing protocol instances are tied to Virtual Routers (VRs). VRs are tied to zones, and zones are tied to interfaces. A VR consists of potentially two things: a routing table and perhaps instances of one or more routing protocols. By default, all zones are in the
trust-vr. In the OSPF network depicted in Figure 16-1, area 0 has three devices.
Figure 16-1. OSPF single-area topology
Before you can enable OSPF on an interface, you need to configure the physical and link-layer options, the zone, and the IP address. You also need to configure the area (area 0 is already preconfigured) and you need to enable OSPF on the VR:
set interface ethernet0/1 zone "Untrust"FIREWALL-A->
set interface ethernet0/1 ...