I tried to disable firewall on the router and I even disabled firewall on the machine where vSphere client is installed. But still I am unable to connect to the ESXi Host. However, when there is internet connection, I can easily connect. ipconfig /all on the client machine where vSphere Clinet is installed results on the following:
Wireless LAN adapter Wireless Network Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Atheros AR9485WB-EG Wireless Network Adapter
Physical Address. . . . . . . . . : E8-03-9A-8B-EA-DA
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.0.150(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Sunday, January 06, 2013 8:42:07 AM
Lease Expires . . . . . . . . . . : Sunday, January 06, 2013 5:50:29 PM
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 209.18.47.61
209.18.47.62
NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Local Area Connection:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : E8-03-9A-A9-98-DE
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
ESXi host is configured with 192.168.0.21 IP address
Subnet Mask......... 255.255.255.0
Default Gateway.... 192.168.0.1