Docs Use Lantern
Health and best practice
Issues by severity, the fourteen best-practice checks, and how the score is calculated.
Issues and severity
| Severity | Mark | Means |
|---|---|---|
| Critical | red diamond | Outages only: a device down, a loop, a stack member down. |
| Warning | yellow triangle | Real faults that hurt traffic: a stranded VLAN, a trunk mismatch, optic or LAG problems, interface errors, an unmanaged switch. |
| Advisory | (i) | Things to plan for: lifecycle, firmware, PoE budget, best practice. Advisories never highlight the map. |
Issues are grouped by category (Loops, VLANs, Optics, Firmware, Lifecycle and so on) and can be filtered by severity. Select one to see it on the map.
When a loop happens, Loop incidents appears at the top with each incident's state, VLAN, likely origin, evidence, start and duration.
Best-practice checks
| Category | Check | Severity |
|---|---|---|
| Loops | Loop protection on access ports | critical |
| Loops | No unmanaged switches | warning |
| VLANs | No devices in VLAN 1 | warning |
| VLANs | Trunks match on both ends | critical |
| Redundancy | Redundant uplinks (minimum uplinks, default 2) | warning |
| Redundancy | Uplinks spread across stack members | warning |
| Power | PoE headroom (maximum % of budget, default 80) | warning |
| Lifecycle | Recommended firmware | advisory |
| Lifecycle | Supported hardware (warn this many months ahead, default 12) | warning |
| Optics | Vendor-supported optics | advisory |
| Optics | Uplinks at full speed | warning |
| Visibility | LLDP on both ends | advisory |
| Security | Management network | warning |
| Documentation | Naming convention | advisory |
Expand a check to see what failed. Administrators can turn checks off, adjust their settings for this site, and add custom rules; settings are saved per site in checks.json.
The score
The score out of 100 is the share of items passing across the enabled checks, weighted by severity (critical counts most, advisories least). Turning a check off removes it from the score. How the score is calculated under the score repeats this, and What lowers the score lists the failing checks with the most failing items first.