CCNA L1: Interface Addressing and Verification

Bundle lab · $29.99

Beginner CCNA lab (1 of 10) focused on configuring and verifying IPv4 interface addressing on Cisco IOS routers. Learners assign given /24 addresses to two router interfaces and validate directly-connected reachability. No routing protocols or static routes are configured in this lab.

Learning objectives

• Configure IPv4 addresses and masks on IOS router interfaces using ip address <addr> 255.255.255.0
• Bring interfaces administratively up using no shutdown
• Verify interface state and addressing with show ip interface brief and show running-config interface
• Validate directly-connected reachability with ping between neighbors and a host-to-gateway test

Troubleshooting focus

• Interface remains administratively down or protocol down/down due to missing no shutdown or cabling error
• Mask mismatch on a shared LAN prevents ARP/neighbor resolution
• Host default gateway misconfigured, preventing host-to-gateway pings
• Wrong IP assigned to the wrong interface (transit vs LAN)