C-4515

Cisco C-4515 DNS Resolution Error

Cisco DNS Resolution Error Catalyst
96% fix rate

Cause

Split-horizon DNS misconfiguration

Fix Steps

  1. Open router admin panel and navigate to DNS settings
  2. Change primary DNS to 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare)
  3. Set secondary DNS to 8.8.4.4 or 1.0.0.1
  4. Flush DNS cache: ipconfig /flushdns (Windows) or sudo dscacheutil -flushcache (Mac)
  5. Restart router and connected devices

Related Errors

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