A switch is a Layer 2 network device that forwards Ethernet frames based on the destination media access control (MAC) address. A switch has RJ-45 ports for connection and the intelligence to read MAC addresses to make forwarding decisions. The purpose of the switch is to quickly and accurately forward frames toward the destination.
This case study describes what can go wrong with firmware updates when relying on Unauthorized Support Providers (USPs), and reveals how this strategy led the way for disaster in one real-world organization.
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