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UID:henc-session-6@henc.net.unc.edu
SEQUENCE:3
DTSTAMP:20260903T031725Z
DTSTART:20260929T153500Z
DTEND:20260929T160000Z
SUMMARY:It Worked Yesterday: Why Networks Fail at Scale
LOCATION:Main Room\, Metropolitan State University of Denver | CAVEA Theate
 r\, Denver\, CO
DESCRIPTION:Higher education networks increasingly resemble small cities—
 supporting tens of thousands of users\, diverse device ecosystems\, and mi
 ssion-critical services spanning academics\, research\, healthcare\, and s
 tudent life.  Yet many network failures in these environments are not caus
 ed by complex architectural flaws\, but by accumulated technical debt and 
 the realities of reactive operations.\n\n    This session presents real-wo
 rld incidents from operating a 100G campus network\, including wireless in
 stability following a switch replacement\, a statewide outage caused by a 
 template misconfiguration\, DHCP failures triggered by security controls\,
  and a campus-wide disruption from a Layer 2 loop introduced by a third-pa
 rty system.  Each example demonstrates how seemingly minor decisions—car
 ried-forward configurations\, misunderstood scope\, and hidden dependencie
 s—compound over time and only surface under real-world conditions.\n\n  
   Attendees will explore how technical debt manifests in higher education 
 environments\, why many issues remain hidden until systems are stressed\, 
 and how organizational constraints often reinforce reactive approaches to 
 network management.  The talk will focus on practical lessons learned\, in
 cluding strategies to identify.
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