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VLAN Design Translation for VMware: Physical Trunks, Port Groups, and Guest Tagging

ai, AI (Artificial Intelligence), Artificial Intelligence, EST, ESXi, networking, Operational Validation, Port Groups, vCF (VMware Cloud Foundation), vDS, VGT, VLAN, VMware Cloud Foundation, vSphere, VST, vSwitch

VLAN issues in VMware environments are rarely caused by one mysterious setting. More often, they come from a translation problem. The network team thinks in terms of access ports, trunks, allowed VLAN lists, native VLANs, port channels, and upstream gateways. The virtualization team thinks in terms of vSwitches, distributed port groups, VMkernel adapters, VM network […]

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VM Network Troubleshooting from Guest OS to Uplink: A Layer by Layer VMware Runbook

ai, AI (Artificial Intelligence), Artificial Intelligence, ESXi, NSX DFW, pktcap-uw, port group, runbook, troubleshooting, vCenter Server, vCF (VMware Cloud Foundation), vDS, VLAN, vmnic, VMware Cloud Foundation, vSphere

Virtual machine network problems rarely arrive with a clean label. The ticket usually says something like “the VM is unreachable,” “the application cannot connect,” “ping fails,” “internet access is down,” or “VMs on different hosts cannot talk.” The underlying cause might be inside the guest OS, on the VM’s virtual NIC, in the port group,

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