VLAN 2 Connectivity Issue

Let’s say you’re a network support engineer at Cisco Meraki, managing a large campus network with multiple core and distribution switches. Three VLANs (VLAN 1, 2, and 3) are configured across the entire network, and Rapid Spanning Tree Protocol (RSTP) is confirmed to be working as expected. One day, a user on VLAN 2 reports they can’t access the internet, but users on VLANs 1 and 3 are unaffected.

How would you systematically diagnose and isolate the root cause of the internet connectivity issue for users on VLAN 2?