Go to Start and type cmd in the search field to open the command prompt. Alternatively, go to Start > Run > type cmd or command. Type nslookup and hit Enter. The displayed information will be your local DNS server and its IP address.
Causes of 169 IP Address ErrorWhen a Windows computer isn't able to communicate with the DHCP server, something called Automatic Private IP Addressing (APIPA) kicks in. It assigns the computer an IP address that starts with 169.254. These IP addresses are only useful on local networks, not the internet.
Use the help switch with the ping command to show detailed help about the command's several options. The -f, -v, -r, -s, -j, and -k options work when pinging IPv4 addresses only. The -R and -S options only work with IPv6.
Activity 1 - Ping the Default Gateway with a Custom Packet Length
- Open a command prompt.
- Use ipconfig to display the default gateway address.
- Type ping -l 1000 <default gateway address> where <default gateway address> is the default gateway address displayed above.
- Observe the results.
Running a Traceroute
- Press Windows key + R to open the Run window.
- Enter cmd and press Enter to open a Command Prompt.
- Enter tracert, a space, then the IP address or web address for the destination site (for example: tracert ).
- Press Enter.
Press Ctrl-C to stop pinging. Following are sample results of the ping command: Normal response--The normal response occurs in 1 to 10 seconds, depending on network traffic.
Ping is a command-line utility, available on virtually any operating system with network connectivity, that acts as a test to see if a networked device is reachable. The ping command sends a request over the network to a specific device.
Ping works by sending an Internet Control Message Protocol (ICMP) Echo Request to a specified interface on the network and waiting for a reply. When a ping command is issued, a ping signal is sent to a specified address. When the target host receives the echo request, it responds by sending an echo reply packet.
How to Fix the Ping Error Request Timed Out?
- Ping Another address from your computer. You should check whether you can ping any other address from your computer.
- Ping the Localhost. Type cmd on Windows search.
- Disable the Firewall and Check for the issue.
- Power Cycle the Network.
-t = Using this option will ping the target until you force it to stop using Ctrl-C. -a = This ping command option will resolve, if possible, the hostname of an IP address target.
To stop the ping command in Linux, we should use Ctrl+C to stop sending packets to the target host. The command will stop all the processes in the terminal.
Every introductory Cisco course tells you that you can stop any IOS command (for example, ping or traceroute) with the Ctrl/^ (also written as ^^ or Ctrl-Shift-6) escape character.
What to Know
- In Command Prompt, type: cls and press Enter. Doing this clears the entire application screen.
- Close and reopen Command Prompt. Click the X on the top right of the window to close it, then reopen it as usual.
- Press the ESC key to clear the line of text and move back to the Command Prompt.
ping is the primary TCP/IP command used to troubleshoot connectivity, reachability, and name resolution. Used without parameters, this command displays Help content. You can also use this command to test both the computer name and the IP address of the computer.
