Configuring Topologies

For Multitopology Routing to run on the router, you need to configure one or more topologies. For each topology, you specify a string value, such as voice, that defines the type of traffic, as well as an interface family, such as IPv4. In addition, a default topology is automatically created. You can also enable a topology for IPv4 multicast traffic. Each topology that you configure creates a new routing table and populates it with direct routes from the topology. For more information about the naming conventions for routing tables for topologies, see Multitopology Routing Overview. To configure a custom topology, include the following statements at the [edit routing options] hierarchy level:

Include the family inet statement to specify IPv4 traffic. Include the family inet6 statement to specify IPv6 traffic.

Include the topology topology-name statement to create a topology. For topology-name, specify a name for the topology in the form of a string. Typically, you would specify a name that describes the type of traffic, such as video. You can also specify ipv4-multicast to create a topology for IPv4 multicast traffic. A default topology is also automatically created.