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Set SNMP scanner default timings to 10m/5s

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A typical router keeps active devices' ARP entries fresh continuously,
so a 10-minute poll interval stays well within common ARP cache TTLs
while keeping device-event churn modest (each poll records a DeviceSeen
event per device). A 5s per-request timeout adds margin for a busy
agent or large ARP table at no cost on the happy path.

Updates the default in settings.rs and the sample TOML, README and
NixOS module. TODO timing-review item narrowed to the ARP scanner.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
rzuasti
2026-06-02 08:23:20 -04:00
co-authored by Claude Opus 4.8
parent 2987f66363
commit b283699b3c
5 changed files with 9 additions and 9 deletions
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examples/sample_oott.toml
+2 -2
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@@ -28,8 +28,8 @@ enabled=true # Set to false to disable the DHCP scanner
# enabled=true # Set to false to disable the SNMP scanner without removing this section
# target="192.168.1.1:161" # SNMP agent to poll, as host:port. Point this at your gateway (router/firewall).
# community="public" # SNMPv2c read-only community string. Use a read-only community; never commit a real secret here.
# wait_between_scans="2m" # Wait time between polls. Keep this well under the agent's ARP cache timeout so active devices aren't missed.
# timeout="3s" # Per-poll SNMP request timeout.
# wait_between_scans="10m" # Wait time between polls. Keep this well under the agent's ARP cache timeout so active devices aren't missed.
# timeout="5s" # Per-poll SNMP request timeout.
# Note: SNMP must be enabled on the target. On pfSense: Services > SNMP (v2c; the mibII module exposes the ARP table).
# On OPNsense: install the os-net-snmp plugin, then Services > Net-SNMP. In both cases add a firewall rule allowing
# UDP/161 from the host running OOTT.