Windows

Jun 20, 2007

My Digital Life Editorial Team

7 Comments

Delicious

Clear, Delete and Refresh ARP Cache Entry

Tweet

ARP (Address Resolution Protocol is the standard method for finding a host’s hardware address when only its network layer address is known. In other word, in IPv4 and Ethernet network environment, Windows operating system uses ARP to translate IP addresses to Ethernet MAC addresses. However, Microsoft Windows ARP cache will occasionally become corrupt and need to be cleared and deleted so that the cache can be refreshed.

When you haven’t problem connecting to Internet where connections to websites or web pages will time out or fail, and unable to surf or browse the Internet pages, the error may because also of ARP cache corruption, other than TCP/IP corruption or Winsock error.

To confirm that it’s indeed an ARP issue, try to ping both the loopback address (127.0.0.1) and the local computer’s IP address. Then try to any other IP addresses such as those of Google.com or Yahoo.com. If you can ping to local IP address and loopback address, but not any other IP addresses, then this is the typical symptom of ARP cache failure.

Use the NetShell (netsh) command to clear, delete or refresh the Address Resolution Protocol (ARP) cache by following the following steps.

1. Click on Start button.
2. Click on Run command and type Cmd into the Run text box, and then press Enter. For Windows Vista, type Cmd in Start Search, and then press Ctrl-Shift-Enter keyboard shortcut to force Administrator privileges. Enter Administrator user ID and password and allow any permission request when prompted.
3. In the Command Prompt window, type the following command then press Enter.

   netsh interface ip delete arpcache

The command works in Windows Vista, Windows XP and Windows 2003.

Related posts:

1. Display and View FireFox Cache Files Without Browser Cache Viewer
2. Delete and Clear Internet Explorer Address Bar History
3. Remove and Delete Some URL Entries from Address Bar History of FireFox and Internet Explorer
4. Vista IE7 Cache & Cookies Folder, Temp Directory and History Location
5. Cache Busting Definition and Explaination

7 Comments

• Clear ip | Yesnetworkinternational January 12, 2012 at 6:09 am

  [...] Clear, Delete and Refresh ARP Cache Entry « My Digital LifeJun 20, 2007 … netsh interface ip delete arpcache. The command works in Windows Vista, Windows XP and Windows 2003. Related posts: Display and View … [...]

  Reply
• 
  Lorrie April 6, 2011 at 8:01 am

  thanks for solving this issues I've been lokking for this for a while. if you know of any other info concerning this cache please let me know thanks again it helped

  fiddy cent kitty

  Reply
• 
  Phil4 February 10, 2011 at 11:29 am

  Check Refine Efficiency Pro:

  - cache cleaner (root and non root(individually)), no sd card cache support;

  - market history cleaner;

  - task killer;

  - start up manager (root and non root(no guarantee));

  - task scheduling.

  Also browser history cleaner.

  Reply
• 
  Spyros October 17, 2010 at 9:49 am

  arp -d * does not work on 2003 server if DNS client service is running. Neither the netsh command. Tested with 2 nics. When I stop the service it work.

  Reply
• 
  amster October 6, 2009 at 10:33 am

  thanks bud

  Reply
• 
  _pa January 17, 2009 at 4:40 pm

  this should work too –

  > arp -d *

  Reply
• 
  sarhan June 22, 2007 at 5:04 am

  good

  Reply