Interface and Layer-2 Readiness Checklist

Checklist discipline. Every item is meant to be answered yes / no with evidence. Items marked critical are non-negotiable; items marked warn are judgement calls; items marked info are baseline expectations.

Items

• Every interface has a description (severity: info)
• MTU consistent across the path (severity: info)
• Speed / duplex negotiated correctly on both ends (severity: info)
• VLAN IDs consistent with the switch configuration (severity: critical)
• Bond members correctly aggregated on both ends (severity: warn)
• Bridge members documented and STP policy set (severity: info)
• No half-duplex links in production (severity: warn)
• Drop counters monitored and alerted (severity: info)

Severity legend

• info: baseline expectation
• warn: judgement call; production-grade depends on context
• critical: non-negotiable; a missed critical item is a release blocker

Evidence retention

The completed checklist is evidence for the change ticket, the audit, and the post-incident review. Store it where it can be recovered if the router is lost.