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4

Maintenance can be done at any time so long as it doesn't impact business systems. In your case of issues that caused a critical failure, the issue wasn't that it couldn't be done, its that either you have no notification of change process or the admin didn't follow it. The fact that there was a name change was not communicated to the people responsible ...


2

You learn from the mistake and take steps to analyze the impact of environment changes before making them. Documentation goes a long way here, but also try to evaluate why this type of change would have such a wide-reaching impact. Were there things hard-coded in applications? Is there room for improvement in how the system functions? A hostname change ...


0

Although the answer about is good, I'll try to add to it. Your main problem seem to be the bottlenecks between switches. And yes, you made loops between them, but STP will only help you in disabling these loops, but in each exact moment only one uplink on each switch will be active (and should be active). If you are using unmanaged switches, loops can ...


1

STP is a protocol which switches use to prevent routing loops by sending each other BPDUs. This is accomplished by blocking ports to other switches which are not the best path back to the root switch. In your drawing, the switch built into the router should be the root switch, and each switch has a direct connection to it. That is fine, but all the traffic ...



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