Open Shortest Path First version 2 (OSPFv2) Overview How OSPFv2 protocol works OSPFv2 concepts OSPFv2 configuration task list Configuring OSPF on the routing switch Assigning the routing switch to an OSPF area Setting OSPF network for the area Creating an OSPF virtual link for an area Configuring external route redistribution and control Configuring area ranges on an ABR to reduce advertisements to the backbone Influencing route choice by changing the administrative distance Configuring graceful restart of OSPF routing Configuring OSPF interface settings Configuring OSPF interface authentication Configuring OSPF virtual link settings Configuring OSPF authentication on a virtual link Configuring all OSPF interfaces as passive Viewing OSPFv2 information Clearing OSPF statistics on a switch An example of the OSPFv2 information in the show running-config command OSPFv2 commands