Resilience
Resilience Planning for Cisco Networks: Patch, Shield, Replace, or Segment
06/23/2026
A practical resilience model for Cisco networks should classify each exposure into patch, shield, replace, or segment, with owners, deadlines, and evidence.
How Do You Make DNS Keep Working When the Internet Is Down?
06/22/2026
Serve local names without depending on a public resolver, and plan resolver-host resilience separately from WAN resilience. Test real client paths while recognizing that local DNS cannot replace cloud authentication or uncached public answers.