Day 9: The Red Dashboard

One month as Network Admin, and the night shifts are yours. Nothing has broken on your watch yet.

At 3:07 AM, Tulsa goes red.

Figure 1 – 3:07 AM incident alert

Tulsa loads trucks all night, and its docks are cut off from HQ. You are the only technician on shift.
You can wake Sarah up, or you can take the routers yourself.

You have the console on R-WAN1, and the NOC's out of band access to R-TULSA1.

Figure 2 - The links of R-WAN1

Lab Instructions

The dock network at Tulsa is 10.31.30.0/24, and one of its PCs answers on 10.31.30.10.

• Find the problem, then ping the Tulsa dock PC from R-WAN1

• Save the configuration

Finish the lab, then type the flag below.

The link came back at 3:29 AM.

Figure 2 – Postmortem review with Sarah

Nobody was woken up, and dock operations lost 22 minutes.