Code Library

Arp stands for Address Resolution Protocol. Arp enables the display and modification of the Arp table on a local machine, which matches physical MAC addresses of machines to their corresponding IP addresses. Arp increases the speed of connection by eliminating the need to match MAC addresses with IP addresses for subsequent connections. Some of the parameters for Arp are as follows:

. -a[InetAddr] [-N IfaceAddr]—Displays the Arp table for all adapters on a machine. Use Arp –a with the InetAddr (IP address) parameter to display the ARP cache entry for a specific IP address.

. -dInetAddr [IfaceAddr]—Deletes an entry with a specific IP address (InetAddr). Use the IfaceAddr parameter (IP address assigned to the interface) to delete an entry in a table for a specific interface. Use the wildcard character in place of InetAddr to delete all entries.

. -g[InetAddr] [-N IfaceAddr]—Similar to the –a parameter.

. -sInetAddr EtherAddr [IfaceAddr]—Adds a static entry to the ARP cache that resolves the IP address (InetAddr) to a physical address (EtherAddr). To add a static ARP cache entry to the table for a specific interface, use the IP address assigned to the interface (IfaceAddr).

Source of Information : Sams - Windows Server 2008 R2 Unleashed (2010)