📋 THE NOC LOOP: PAGE → ACCEPT → FIX → RFO → CLOSE

• Page. Monitoring (SolarWinds / Nagios / BMS) raises an alert: the incident monitor on your desk flashes red, the alert tones sound and the shift lead calls it on the radio. The SLA clock starts now.
• Accept. Walk to the NOC workstation and press [E] to open the Ops Console, then ACCEPT & ASSIGN TO ME. Your MTTR clock starts. Objectives and the yellow waypoint marker point you at the fault.
• Fix. Work the ticket in the hall with the toolbelt and the CLI. When the fault clears the ticket goes RESOLVED.
• RFO + close. Return to the workstation, pick the correct Reason For Outage from the evidence you gathered, and close the ticket. A wrong RFO gets bounced by the shift lead.
• Score. Fast acknowledgement, low MTTR, SLA met and a first-try RFO all add to your shift score. Three tickets make a shift; the scoreboard shows at the console when the queue is clear.

⌨️ CISCO IOS-XE CLI REFERENCE

🔁 TICKET 2: CATALYST 2960 BROADCAST STORM

Once the core link is back, the NOC opens INC-9002. Someone plugged an unmanaged desktop switch into SW-ACC-02 in Rack C-02 (Row C, the far aisle) and it negotiated a trunk over DTP, so the access layer is drowning in broadcast. The port LEDs on the 2960 flicker amber instead of green.

• Walk to Rack C-02 (amber beacon). Find the little blue switch on the shelf under the 2960 and inspect it with [E], or tone its port with tool [4].
• Console in on the 2960's left status panel with tool [1], then run show mac address-table. One port learning 180+ MACs is your rogue.

🌡 TICKET 3: ROW D THERMAL ALARM (CRAC-02 OFFLINE)

The BMS reports CRAC-02 with no input power and the hot aisle behind Row D climbing. Every minute it runs the D row cooks a little more.

• Select the thermal camera [5] and walk the C/D aisle (the far one). Cabinets bloom orange as they warm; click the hot one (Rack D-03) to log the hotspot.
• Inspect CRAC-02 on the south wall with [E]. It has no supply power: the feed breaker tripped on DB-02.
• Badge into the UPS & Power Room (corridor, next to the data hall), find DB-02 on the east wall and press [E] to reset the tripped breaker.
• Back in the hall, press [E] on CRAC-02 to restart it. Watch the exhaust temperature fall on the thermal cam, then log a scan on D-03 under 32 °C to verify.