Real Labs · Logs

Splunk-style Log Explorer

Sift through hundreds of realistic gNB and 5GC log lines. Filter by severity, component, and time window — just like in a real NOC. Each lab hands you a real-world problem and grades you as you go.

Available log labs

intermediate 30 min1365 lines

NR Dropped Calls — gNB Log Investigation

Cell gNB-MET-042-N1 saw an 18% spike in dropped calls over 2 hours (7% vs 0.4% baseline). Find the pattern in 2h of gNB logs and pin down the root cause.

Dropped Calls PCI Interference gNB

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advanced 35 min250 lines

Core Overload — AMF During Super Bowl Surge

Super Bowl LX kickoff triggered a mass-reconnect herd at MetLife Stadium. The AMF started rejecting registrations. Find what ACTUALLY overloaded — and why scaling the AMF alone didn't help.

Core Overload AMF UDM Capacity

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advanced 40 min804 lines

Intermittent Handover Failures — Statistical Analysis

DOWNTOWN-WEST cluster HO success rate slid from 97.5% to 94.1% over a week with no obvious single cause. Dig into 3 days (~800 events) of HO logs and find the hidden pattern.

Handover Statistics Transport Backhaul

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advanced 35 min

IMS Registration Storm — SIP registrar overload

A power event triggers 40K IMS clients to re-REGISTER simultaneously. Read S-CSCF and HSS logs; find why 401 challenges cascade into outage.

Coming Soon

advanced 40 min

UPF Packet Loss — dataplane debug

0.8% packet loss on one UPF pod affecting VoNR quality. Parse DPDK / XDP counters and GTP-U logs to find the dropping queue.

Coming Soon

intermediate 30 min

DRB Re-establishment Flood — why are UEs disconnecting?

30-minute burst of RRC re-establishments from one sector. Is it radio, is it PDCP, is it a sync issue? Find it in the logs.

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