D-Link DFL-260-IPS-12 Product Manual - Page 186
Dynamic Routing Rule, Dynamic Routing Rule Objects
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4.5.4. Dynamic Routing Rules Chapter 4. Routing OSPF Requires at Least an Import Rule By default, NetDefendOS will not import or export any routes. For OSPF to function, it is therefore mandatory to define at least one dynamic routing rule which will be an Import rule. This Import rule specifies the local OSPF Router Process object. This enables the external routes made available in the OSPF AS to be imported into the local routing tables. Specifying a Filter Dynamic routing rules allow a filter to be specified which narrows the routes that are imported based on the network reached. In most cases, the Or is within option should be specified as all-nets so that no filter is applied. When to Use Export Rules Although an Import rule is needed to import routes from the OSPF AS, the opposite is not true. The export of routes to networks that are part of OSPF Interface objects are automatic. The one exception is for routes on interfaces that have a gateway defined for them. In other words, where the destination is not directly connected to the physical interface and instead there is a hop to another router on the way to the destination network. The all-nets route defined for Internet access via an ISP is an example of such a route. In this case, a dynamic routing export rule must be created to explicitly export the route to the OSPF AS. Dynamic Routing Rule Objects The diagram below shows the relationship between the NetDefendOS dynamic routing rule objects. Figure 4.13. Dynamic Routing Rule Objects 4.5.4.2. Dynamic Routing Rule This object defines a dynamic routing rule. General Parameters Name Specifies a symbolic name for the rule. 186