Nexus - Cisco Nexus 9000
Overview
Cisco Nexus leaf and spine switches form the data-center fabric backbone and endpoint attachment layer.
Monitoring
Method
Prometheus SNMP Exporter through network-prometheus.
Metrics Collected
- Leaf/spine and fabric adjacency health
- Interface, port-channel, error, and discard counters
- CPU, memory, and system uptime
- SNMP target and scrape health
Grafana Dashboards
- Cisco CDI Nexus and enhanced Nexus SNMP dashboards are recorded in the audit dashboard source repository.
Logging
Log Source
Nexus leaf and spine nodes forward network syslog and SNMP traps.
Splunk Index
network_syslog for syslog and snmp_traps for traps.
Key Log Queries
index=network_syslog device_type="nexus9k" node_type IN ("leaf","spine") device_name="<device_name>"
Alerting
Grafana Alert Rules
| Alert Name | Severity | Description |
|---|---|---|
| Nexus fabric health | Varies | Interface, adjacency, and platform conditions. |
| Scrape down | Critical | Detects loss of Nexus SNMP collection. |
Splunk Alerts
| Alert Name | Severity | Description |
|---|---|---|
| Nexus network events | Varies | Leaf and spine events from network_syslog. |
Notification Flow
Nexus → Grafana/Splunk → EMS (KeepHQ) → [notification channels]
Inventory
- Repository: nexus9k-inventory
- Update Method: Generated from the managed Nexus Ansible inventory.
- Update Cadence: On inventory change through pull request.