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Configuring Topologies

For Multitopology Routing (MTR) 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 Routing Table Naming Conventions for Multitopology Routing. To configure a custom topology, include the following statements at the [edit routing options] hierarchy level:



[edit routing-options]

topologies {


family (inet | inet6) {

topology topology-name;
}


}

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.

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