How can I set a static ip address on a DHCP network?

Question

My home linksys router is using local address of 192.168.75.1 and subnet of 255.255.255.0. The DHCP server is enabled. The starting IP address is 192.168.75.100.

I'm facing problem configuring the IP of a host manually in windows 7. In LAN connection properties, I set the IP address to 192.168.75.103 and subnetmask to 255.255.255.0 under properties. I'm able to ping my other computer in the same network of 192.168.75.102 but I'm not getting connected to the internet. It works if i obtain IP address by DHCP.

here is my ipconfig /all info:

Windows IP Configuration

   Host Name . . . . . . . . . . . . : codemonkey-PC
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Realtek PCIe GBE Family Contr
   Physical Address. . . . . . . . . : BC-5F-F4-5A-4C-92
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::e88c:7158:f66:eebe%11(P
   IPv4 Address. . . . . . . . . . . : 192.168.75.103(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.75.102
   DHCPv6 IAID . . . . . . . . . . . : 247226356
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-15-75-D5-BC-5F

   DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
                                       fec0:0:0:ffff::2%1
                                       fec0:0:0:ffff::3%1
   NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter VMware Network Adapter VMnet1:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : VMware Virtual Ethernet Adapt
1
   Physical Address. . . . . . . . . : 00-50-56-C0-00-01
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::8c16:daae:dcd:bc5%14(Pr
   IPv4 Address. . . . . . . . . . . : 192.168.40.1(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . :
   DHCPv6 IAID . . . . . . . . . . . : 318787670
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-15-75-D5-BC-5F

   DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
                                       fec0:0:0:ffff::2%1
                                       fec0:0:0:ffff::3%1
   NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter VMware Network Adapter VMnet8:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : VMware Virtual Ethernet Adapt
8
   Physical Address. . . . . . . . . : 00-50-56-C0-00-08
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::b06d:ab4a:cc22:9c18%16(
   IPv4 Address. . . . . . . . . . . : 192.168.75.1(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . :
   DHCPv6 IAID . . . . . . . . . . . : 352342102
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-15-75-D5-BC-5F

   DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
                                       fec0:0:0:ffff::2%1
                                       fec0:0:0:ffff::3%1
   NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{51D31CD7-FC75-4997-AF4F-DA672D8E928C}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Inter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{0D8C0AC8-32A3-4856-A3D3-769BC8FB4140}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{30063663-D3EF-4349-958D-CFD822487C12}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Answer 1

Try this:

1) Set it up (computer and router) to obtain ip address automatically.  
2) Shutdown computers.  
3) Power the router off then after 30 seconds, power back on.  
4) Repower computers.  
5) Confirm that you have Internet connectivity.  
6) Make note of (in router settings):  
   a) Subnet mask.  
   b) Wan IP Address.  
   c) Default Gateway Address.  
   d) DNS Address.  
   e) Client IP Addresses.  
7) Setup router to use Static IP addresses.  
8) Configure Windows for Manual (static) IP addresses.
9) Insure Gateway is set as 192.168.75.1 in Windows.  
10) Shutdown computers.  
11) Re-power router as in step 3.  
12) Re-power computers.  
13) Confirm router settings are the same as before:  
   a) Subnet mask.  
   b) Wan IP Address.  
   c) Default Gateway Address.  
   d) DNS Address.  
14) Confirm Client IP Addresses are as you configured in Windows.  
15) Confirm that you have Internet connectivity.  

Answer 2

You've set your default gateway to your other PC, the one at 192.168.75.102. That's wrong. Set your default gateway to the IP address of your router, 192.168.75.1.

Answer 3

It's because you should manually set your default gateway to the gateway's address, (router in this case), so 192.168.75.1, and not 192.168.75.102.

In Win7, you can set this:

1. Open Network Connections by clicking the Start button , clicking Control Panel, clicking Network and Internet, clicking Network and Sharing Center, and then clicking Manage network connections.

2. Right-click the connection that you want to change, and then click Properties. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

3. Click the Networking tab. Under This connection uses the following items, click either Internet Protocol Version 4 (TCP/IPv4) or Internet Protocol Version 6 (TCP/IPv6), and then click Properties.

Your computer has to know how to connect to the other networks, that's what the default gateway does.

Answer 4

I think your problem is DNS. If you can ping external IP addresses, then your internet works. Try one of these:

8.8.8.8, 208.67.222.222, 173.194.71.94

In your ip-configuration dialog, set the DNS to that of the default gateway (router), or to an external public server such as open-dns (208.67.222.222).