Topic: dns resolution

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  • AWS Outage Exposes the Internet's Fragile Core
    October 20, 2025
    88%

    AWS Outage Exposes the Internet's Fragile Core

    A major global internet disruption originated from Amazon Web Services' US-EAST-1 data center, affecting numerous popular websites and services including Amazon's own platforms, Meta's WhatsApp, and OpenAI's ChatGPT. The outage was caused by a failure in DNS resolution for Amazon's DynamoDB datab...

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  • Cisco Switch Reboot Loop Caused by DNS Bug
    January 10, 2026
    55%

    Cisco Switch Reboot Loop Caused by DNS Bug

    A firmware bug in Cisco switches' DNS client service is causing widespread, continuous reboot cycles by treating routine DNS lookup failures as critical errors. The issue affects multiple Cisco switch series, including the CBS250/350 and Catalyst C1200, and is triggered by attempts to resolve dom...

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Related Topics

affected models (1) network disruption (1) service disruptions (1) cisco switch bug (1) data integrity (1) dns client errors (1) cloud outage (1) reboot loops (1)