The Cisco Catalyst 1300 datasheet highlights "Dual Image" support, leading many to incorrectly assume it handles zero-downtime ISSU. In this CCIE technical review, we break down the architectural realities of SMB stacking through verifiable feature absence and field data from firmware train 4.x. Discover why the forwarding ASIC flushes state during software reloads, what actually happens to your downstream PoE APs, and how to safely schedule your maintenance windows.
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