Enabling OSPF Point-to-Multipoint Support Using NSM
ScreenOS release 5.1 introduced Point-to-Multipoint (P2MP) interface support for Open Shortest Path First (OSPF). P2MP interfaces may be used when one tunnel interface is bound to multiple VPN tunnels (hub and spoke environment) and OSPF is enabled at multiple spokes. In this configuration, the tunnel interface at the hub can be configured as a P2MP OSPF interface.
To enable OSPF Point-to-Multipoint support using NSM, perform the following steps: