Hi,
Gateway is not reachable!!! That's strange.Please do post the O/P of the below commands
ESX 3/4
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esxcfg-vswitch -l # list current vswitch configuration
esxcfg-vmknic -l # list vmkernel interfaces and their configuration
esxcfg-nics -l # display listing of physical adapters and their link state
ESX 5
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esxcli network vswitch standard list # list current vswitch configuration
esxcli network vswitch dvs vmware list # list Distributed Switch configuration
esxcli network ip interface list # list vmkernel interfaces and their configuration
esxcli network nic list # display listing of physical adapters and their link state