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Syntax
ARP -s inet_addr eth_adr [if_addr]
ARP -d inet_addr [if_addr]
ARP -a [inet_addr] [-N if_addr]
| -a |
Displays current ARP entries by
interrogating the current protocol data. If inet_addr is
specified, the IP and Physical addresses for only the specified
computer are displayed. If more than one network interface uses
ARP, entries for each ARP table are displayed. |
| -g |
Same as -a |
| inet_addr |
Specifies an Internet address. |
| -N if addr |
Displays the ARP entries for the
network interface specified by if_addr. |
| -d |
Deletes the host specified by
inet_addr. |
| -s |
Adds the host and associates the
Internet address inet_addr with the Physical address eth_addr.
The Physical address is given as 6 hexadecimal bytes seperated
by hyphens. The entry is permanent. |
| eth_addr |
Specifies a physical address |
| if_addr |
If present, this specifies the
Internet address of the interface whose address translation
table should be modified. If not present, the first applicable
interface will be used. |
Examples
arp -a
Interface 220.0.0.80
| Internet Address |
Physical Address |
Type |
| 220.0.0.160 |
00-50-04-62-F7-23 |
static |
The Physical Address or MAC
address as shown above in the format aa-bb-cc-dd-ee-ff
is the unique manufacturer identification number. This number should
always be a unique address.
An example of how to change the above
IP address 220.0.0.160 to
220.0.0.161 in this case would be:
arp -s 220.0.0.161 00-50-04-62-F7-23
If an IP address has already been
assigned to the specific network adapter it is not possible to change
that assigned IP address to a new address. In addition, networks italicizing
DHCP,
BOOTP or
RARP will automatically assign the card an IP address,
therefore, this command would not be utilized.
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