SNMP done quick - tuning JunOS for metrics extraction
summary
Shows how JunOS tuning cuts SNMP scrape time by changing what the device returns: enable SNMP exporter debug logging, add an interface filter to drop sub‑interfaces, and set a stats cache 29s to match the scrape interval minus one second. A full walk initially takes ~22s (subtrees 12s and 9.8s), expanded walks cost ~500–600ms per subtree, a broad generator config still ~24s, while a minimal config completes in ~6s. Configs published on GitHub.
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