VMware vSphere ESXi 7.0.x
VMware vCenter Server 7.0.x
VMware vCenter Server 6.7.x
VMware vSphere ESXi 6.7.x
VMware vSphere ESXi 8.0.x
VMware vCenter Server 8.0.x
Note: Validate network connectivity by performing ping tests between VMs on the same host and VLAN. Successful pings confirm that the vSwitch or DVS is effectively forwarding packets and that there are no issues at the hypervisor or ESXi layer.
The default gateway is an entry point and an exit point in a virtual machine sub-net, VLAN, or network.
In general, a gateway is a routing device that knows how to pass traffic between different subnets and networks.
Layer 2 and layer 3 switches with VLAN configuration allows IP assignment to each VLAN that will be used as default gateway as for that particular VLAN. A router contains routes for other subnets.
For more information, see:
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Scenario: Unable to connect to a specific IP and encountering an unidentified network adapter.
If a virtual machine has two network adapters, it's essential to confirm how routing is handled for Layer 3 connectivity from the virtual machine.
When a specific network adapter is designated for external connectivity, and there is no Layer 3 communication occurring on the secondary adapter, we need to ensure that no gateway is configured on the secondary NIC. This configuration allows the secondary NIC to use the primary NIC's route for external connectivity.
If a gateway is assigned to the secondary NIC and there is no route available through that gateway, the secondary network will appear as unidentified and will be unable to communicate with Layer 3 devices. In this scenario, the gateway on the secondary adapter should be removed.
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