Concepts / Dynamic routing

Dynamic routing

Administrative distance

Also called route preference, [110/30]

How much a router trusts a source of routes, when several offer the same network.

Lower wins: connected 0, static 1, eBGP 20, OSPF 110. FRR prints it before the metric: [110/30] is OSPF with cost 30. The metric then compares paths from the same source.

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