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Configuring RIPng Overview
Devices running ScreenOS 6.3 support static routing and dynamic routing with the Routing Information Protocol next-generation (RIPng), an interior gateway protocol (IGP) that uses a distance-vector algorithm to determine the best route to a destination, using the hop count as the metric. RIPng supports route redistribution to import known routes, from a router running a different protocol, into the current RIPng routing instance. For example, you can import static routes from a virtual router (VR) into a RIPng instance. RIPng is intended only for use in IPv6 networks. You can create RIPng on a per VR basis on a security device. If you have multiple VRs within a system, you can enable multiple instances of RIPng. OSPFv3 like RIPng is a new dynamic routing protocol that works on IPv6 interfaces.
To configure RIPng on a security device:
Create the RIPng routing instance in a VR.
Enable the RIPng instance.
Enable RIPng on interfaces that connect to other RIPng routers.
Redistribute routes learned from different routing protocols (such as OSPF, BGP, or statically configured routes) into the RIPng instance.
This topic describes the following RIPng options:
RIPng Parameters
You can configure some global RIPng parameters at the VR level. When you configure a RIPng parameter at the VR level, the parameter setting affects operations on all RIPng-enabled interfaces. Table 1 describes the RIPng global parameters that you can configure.
Table 1: Global RIPng Parameters and Default Values
RIPng Global Parameter | Description | Default Description Value(s) |
|---|---|---|
Advertising Default Route | Specifies whether the default route (::/0) is advertised. | Disabled |
Default Metric | Specifies the default metric value for routes imported into RIPng from other protocols, such as OSPF and BGP. | 10 |
Flush Timer | Specifies, in seconds, when a route is removed from the time the route becomes invalid | 120 seconds |
Invalid Timer | Specifies, in seconds, when a route becomes invalid from the time a neighbor stops advertising the route. | 180 seconds |
Maximum Number of Neighbors Allowed on One Interface | Specifies the maximum number of RIPng neighbors allowed. | 256 |
Reject Default Route | Specifies whether RIPng rejects a default route learned from another protocol. | Disabled |
Inbound Route Map | Specifies the filter for routes to be learned by RIPng. | None. Select a value from the drop-down list. |
Outbound Route Map | Specifies the filter for routes to be advertised by RIPng. | None. Select a value from the drop-down list. |
Access List Number To Filter Only Trusted Neighbors | Specifies an access list that defines RIPng neighbors. If no neighbors are specified, the RIPng uses multicasting or broadcasting to detect neighbors on an interface. | None. All neighbors are trusted. |
Update Timer | Specifies, in seconds, when to issue updates of RIPng routes to neighbors. | 30 seconds |
Redistribution Rules
Redistribution rules exchange route information between routing protocols. You need to configure a route map to filter the routes that are redistributed. Routes imported into RIPng from other protocols have a default metric of 10. You can change the default metric.
You can redistribute the following types of rules into the RIPng routing instance in the same VR:
Routes learned from BGP
Routes learned from OSPF
Directly connected routes
Imported routes
Statically configured routes