Use show interfaces , show ip route , show vlan brief , and ping to logically diagnose and fix each issue.
If you complete Exercises 1 through 10 above (including the troubleshooting), you will have manually configured switching, VLANs, static routing, OSPF, DHCP, DNS, and NAT. That is the equivalent of 70% of the CCNA curriculum. cisco packet tracer exercises
The screen flickered. Then, a miracle:
He held his breath. He clicked back to R4. Use show interfaces , show ip route ,
Port Gig0/1, where R4 was connected, was in VLAN 1. But the trunk port connecting this switch to the rest of the topology was allowing VLANs 10, 20, and 30. Not VLAN 1. Use show interfaces