Routing Analysis

Individual Routes

Detailed analysis of individual routes can be performed through a cumulative routing table for parameters such as route presence in a routing instance, next-hop redundancy, route source and metrics, or next-hop interfaces. The cumulative routing table contains all entries from all routing tables and all VRFs collected from all managed network devices with L3 routing capability. Each line represents a corresponding entry from the source routing table, normalized into a standard terse view. The table can be filtered per site, per device, per route, number of next hops, lowest metric of next hops, or other next-hop information. Individual routes can be looked up as a string or as a route for a specific IP address. For example, the IP address 10.0.0.1 will return routes 10.0.0.0/24 and 0.0.0.0/0 but not 10.0.1.0/24.

Routing Consistency

Routing consistency and stability analysis can be performed using the routing stability table. The table lists all unique routed networks, the number of times a route is observed, expressed in absolute and percentage values, and the percentage of routes that have a next-hop age below a certain threshold signifying convergence. The table can be used to verify if similar routes are present in the same number of the routing tables, find starting point for troubleshooting convergence, or check route distribution across the network, including verifying the presence of a default route.