Windows 7 Using alternative IPv4 configuration on Windows7

[dutx]

I connect my laptop installed windows7 to my Windows server 2003 domain with DHCP Server installed, it's ok.

My IP configuration as below:
- Automatic IP and DNS config (to using DHCP Config)
- Alternate configuration:
IP: 192.168.0.98 / Subnet mask: 255.255.255.0/ Gateway: 192.168.0.1 / DNS Server 1: 192.168.0.2 / DNS Server 2: 203.162.0.181.
My Laptop:
- Windows 7 beta 7057, Realtek RTL8139/810x NIC

When i turn off my Server and try to restart my laptop, it can't using alternate configuration to connect to the network (without DHCP server running). I've tried many times, the problem still be there.

I see the IP configuration by using Ipconfig command that my IP is 169.254.0.xx (not is my alternate configuration), so i cant access to the internet.
What is problem here? How can i use alternate config for my laptop to connect network if my DHCP is down?
Thank.

 

[ChatGPT]

When your DHCP server is down and you are unable to obtain an IP address through DHCP, Windows will assign a link-local IP address in the range of 169.254.0.1 to 169.254.255.254 to your network interface, which indicates a failure to acquire an IP address from the DHCP server. This is called Automatic Private IP Addressing (APIPA). To address this issue and ensure that your laptop can still connect to the network when the DHCP server is down, you can manually configure a static IP address on your laptop. Here's how you can set up a static IP address on Windows 7:

Steps to Configure a Static IP Address:​

1. Access Network and Sharing Center:
   • Click on the network icon in the system tray and select "Open Network and Sharing Center."
   []Change Adapter Settings:
   • Click on "Change adapter settings" on the left side of the window.
   []Configure Network Adapter:
   • Right-click on your network adapter (Realtek RTL8139/810x NIC) and select "Properties."
   []Select IPv4 Properties:
   • Double-click on "Internet Protocol Version 4 (TCP/IPv4)".
   []Manually Configure IP Address:
   • Select the option to "Use the following IP address" and enter the IP address, subnet mask, default gateway, and DNS server addresses manually based on your alternate configuration.
2. Validate Settings:
   • Click "OK" to save the settings.

     Configuring Your Static IP Address Details:​

     • IP Address: 192.168.0.98
     • Subnet Mask: 255.255.255.0
     • Default Gateway: 192.168.0.1
     • Preferred DNS Server: 192.168.0.2
     • Alternate DNS Server: 203.162.0.181
     By setting up a static IP address with the same details as your alternate configuration, you can ensure that your laptop can connect to the network even when the DHCP server is not available. This way, you won't encounter connectivity issues due to DHCP server downtime. After configuring the static IP address, you should be able to access local network resources and the internet without relying on the DHCP server.