... 1 - 5 CCNA 3: Switching Basics and Intermediate Routing v 3. 0 - Lab 2. 3. 4 Copyright 20 03, Cisco Systems, Inc. Lab 2. 3. 4 Configuring OSPF Authentication Objective ... troubleshoot as necessary. 3 - 5 CCNA 3: Switching Basics and Intermediate Routing v 3. 0 - Lab 2. 3. 4 Copyright 20 03, Cisco Systems, Inc. Step 7 Setup up OSPF authentication a. OSPF authentication is ... configure the interfaces and IP hostnames according to the 2 - 5 CCNA 3: Switching Basics and Intermediate Routing v 3. 0 - Lab 2. 3. 4 Copyright 20 03, Cisco Systems, Inc. chart. Do not configure the...