Maya lifted the book from her face, blinking in the harsh light. "Did you get it?"

System Bootstrap, Version 15.0

He hit enter. No error. Good. He typed show ip ospf neighbor on Router 2. Nothing. Just the hollow, lonely echo of his own reflection in the dark screen.

He had looked into the void of the console cable, and for once, the void had answered with a working default gateway.

The problem wasn't the commands. He’d memorized the commands like a catechism. enable , configure terminal , interface gigabitethernet 0/0 , ip address , no shutdown . He could recite them in his sleep, which, given the dark circles under his eyes, was a distinct possibility. The problem was the logic . The invisible handshake. The quiet, unspoken agreement between routers to share their link-state databases.

She sat up, rubbing her eyes. "Classic. Let's see the routing table."

Outside, the first gray hint of dawn bled under the blinds. The real world—with its traffic, its downtimes, its angry customers—was still an hour away. But right now, in the warm, humming glow of the CCNA lab, Leo felt a rare and profound sense of peace.

He saw it then. A tiny, beautiful inconsistency. The hello interval on Router 2 was set to 10 seconds. The hello interval on Router 4 was set to 30 seconds.

He was trying to force a conversation between four stubborn, digital mules.

OSPF: Rcv hello from 192.168.10.2 area 0 on GigabitEthernet0/0 OSPF: End of hello processing

The lab was more than a pile of junk. It was a crucible.

He held his breath. The futon creaked. Maya stirred.

A router on a 10-second heartbeat was shouting "You alive?" every ten seconds. The router on a 30-second schedule was answering, "Yeah, fine, check back later," but by the time it answered, the first router had already declared it dead and moved on. A digital tragedy of missed connections.

His study partner, Maya, was passed out on a stained futon in the corner, a thick CCNA Official Cert Guide spread across her face like a papery burial shroud. A line of drool traced a path down the cover’s glossy image of a Cisco Catalyst switch.