I help manage a small testing environment, and we replaced an aging Cisco Catalyst 3750 with a Catalyst 2960-X today. This was a direct replacement, and we copied over the config as best we could on the upgraded firmware/ port reduction. However, I am unable to communicate from connected devices or even ping from the switch when the uplink (port 24) is connected. When I return the uplink cable to the old switch, I am able to ping from the switch outside. I am using 8.8.8.8 as my sample ping for both examples.
This is used as part of a training environment, and we have some new hires that are planning to access it soon. Ports are showing as active, and when I run a show interface. I do not have access to the uplink switch, but if I could point to something specific could probably find someone that does.
Am I missing something that is new since 12.2? Any ideas as to what might be going on?
Old Switch Config - https://pastebin.com/xnYUa063
Old Switch Show Interface - https://pastebin.com/xx6Q8LFr
New Switch Config - https://pastebin.com/eBG2U9ZC
New Switch Config - https://pastebin.com/yNwKBsJ3
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