​Network administrators have to deal with a lot of things every day, not only to keep the network stable, but also to ensure that the computer works properly. These daily network management and maintenance is also skillful, when computer hardware problems occur after the most commonly used method is the replacement method, take another computer of the same parts to replace the suspected damaged parts. We can also use this method to solve network problems.

Cisco Catalyst 9200L Series​ Switches, particularly the Cisco C9200L-48P-4X model, are well-known for their high performance, flexibility, and security in enterprise networks. Recently, Cisco announced the End-of-Life (EOL) for the C9200L-48P-4X, causing many network administrators and IT professionals to reconsider their infrastructure strategies. This article will provide a comprehensive overview of what this EOL means for current users, the alternatives available, and how to best prepare for