majiayu000 Device Inspection - Comprehensive L1-L4
Applicable Scenarios
- Comprehensive network health assessment (all test devices)
- Full stack network inspection (L1-L4)
- Network baseline establishment and verification
- Pre-maintenance complete audit
Identification Signals
User questions contain: "inspect", "comprehensive", "full check", "all devices", "L1-L4"
Execution Strategy
- List all devices in 'test' group using list_devices(group="test")
- For each device, execute comprehensive inspection covering L1 (Physical), L2 (Data Link), L3 (Network), L4 (Transport)
- Generate consolidated report with device-by-device status
- Flag anomalies across all layers
Comprehensive Inspection Template (L1-L4)
L1 - Physical Layer
-
show version(Device model, serial, uptime) -
show inventory(Hardware modules, power supplies, fans) -
show environment all(Temperature, power status, fan status) -
show interfaces(Physical port states, media types)
L2 - Data Link Layer
-
show vlan brief(VLAN configuration and status) -
show spanning-tree summary(STP topology, root bridge) -
show spanning-tree detail(Port states, costs) -
show cdp neighbors(CDP neighbor discovery) -
show mac address-table(MAC table status, count)
L3 - Network Layer
-
show ip route summary(Route count and protocol summary) -
show ip ospf neighbor(OSPF neighbor status) -
show ip ospf interface brief(OSPF interface states) -
show ip bgp summary(BGP neighbor status) -
show ip bgp vpnv4 all summary(VPNv4 status if applicable)
L4 - Transport Layer & Services
-
show tcp brief(TCP session count) -
show processes cpu(CPU utilization and process breakdown) -
show memory statistics(Memory usage across memory pools) -
show interfaces counters errors(Error counters on all interfaces) -
show interfaces counters dropped(Dropped packet counters)
Report Format
Executive Summary
📋 test Network Comprehensive Inspection Report
Inspection Time: 2026-01-08 14:30:00
Total Devices: 8
Overall Status: 2 devices OK, 5 devices WARNING, 1 device CRITICAL
Device Summary:
├─ R1 (10.1.1.1) ✅ OK - L1:✅ L2:✅ L3:✅ L4:✅
├─ R2 (10.1.1.2) ⚠️ WARNING - L1:⚠️ L2:✅ L3:✅ L4:✅
├─ R3 (10.1.1.3) ⚠️ WARNING - L1:✅ L2:✅ L3:✅ L4:⚠️
├─ R4 (10.1.1.4) ⚠️ WARNING - L1:⚠️ L2:✅ L3:✅ L4:✅
├─ S1 (10.2.1.1) ✅ OK - L1:✅ L2:✅ L3:✅ L4:✅
├─ S2 (10.2.1.2) ⚠️ WARNING - L1:✅ L2:⚠️ L3:✅ L4:✅
├─ A1 (10.3.1.1) ⚠️ WARNING - L1:✅ L2:✅ L3:⚠️ L4:✅
└─ A2 (10.3.1.2) ❌ CRITICAL - L1:❌ L2:✅ L3:✅ L4:⚠️
Device-by-Device Detailed Results
Each device gets a full L1-L4 report:
╔══════════════════════════════════════════════════════╗
║ Device: R1 (10.1.1.1) - Core Router ║
║ Platform: Cisco IOS XE ║
║ Status: ✅ ALL SYSTEMS OK ║
╚══════════════════════════════════════════════════════╝
Layer 1 (Physical):
CPU Utilization: 15% (5min avg) ✅
Memory Usage: 62% (avaitestle: 8.2GB) ✅
Temperature: 42°C (threshold: 70°C) ✅
Power Supplies: 2/2 ACTIVE ✅
Fans: 6/6 SPINNING ✅
Layer 2 (Data Link):
VLAN Count: 45 ✅
Active Ports: 48/48 UP ✅
STP Root: YES (Priority: 24576) ✅
LLDP Neighbors: 4 discovered ✅
Layer 3 (Network):
IPv4 Routes: 2,847 routes ✅
OSPF Neighbors: 3 FULL ✅
BGP Neighbors: 2 ESTABLISHED ✅
Routing Errors: 0 ✅
Layer 4 (Transport):
Interface Errors: 0 (24h avg) ✅
Dropped Packets: 0 (24h avg) ✅
TCP Sessions: 45 active ✅
UDP Flows: 128 active ✅
Anomaly Details & Recommendations
⚠️ WARNING: R2 - Temperature trending high
Current: 58°C | Trend: +2°C/hour | Threshold: 70°C
Recommendation: Monitor closely, ensure adequate airflow
❌ CRITICAL: A2 - Power supply #1 degraded
Status: FAILED | Uptime before failure: 847 days
Recommendation: Replace PSU immediately before other PSU fails
Consolidated Findings
Critical Issues (Immediate Action):
1. A2 Power Supply Failure - Replace PSU
2. A1 BGP Neighbor Flapping - Check link stability
Warnings (Monitor):
1. R2 Temperature trending up - Check cooling
2. S2 STP Bridge Priority - May need rebalancing
3. R3 Interface FCS Errors increasing - Check optics
Informational (Good Status):
- All core devices operating normally
- test network stable and well-managed
Multi-Device Inspection Process
- Device Collection: Query all devices in 'test' group
- Parallel Execution: Execute inspection template on each device
- Data Aggregation: Collect and normalize results
- Analysis: Compare against health baselines
- Reporting: Generate comprehensive multi-device report with:
- Overall network health score
- Device-by-device status
- Cross-layer dependency analysis
- Consolidated recommendations
Output Artifact
reports/test-comprehensive-inspection-20260108-143000.md
├─ Executive Summary Dashboard
├─ Device Status Matrix
├─ Layer-by-Layer Details (8 devices × 4 layers = 32 sections)
├─ Anomaly Analysis
├─ Historical Comparison (vs. previous inspection)
└─ Recommendations & Actions