arp是什么进程？

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ARP是TCP/IP Arp command

arp.exe 是一个管理网卡底层物理地址的程序，每个网卡都有一个全球唯一的物理地址
，上网时，动态的IP地址就是根据这个物理地址影射的。
在同一个局域网段内有两个物理地址相同的网络适配器，不论如何配置都会造成IP地址
冲突。
arp -a,显示arp的影射；
arp -s IP地址 物理地址，增加一个arp影射，如arp -s 192.168.1.1 00-aa-00-00-c2
-99；
arp -d IP地址 物理地址，del掉一个arp影射。
用法：当IP地址冲突时，使用此命令可以把冲突的IP地址屏蔽掉！
详细用法：
Displays and modifies the IP-to-Physical address translation tables used by
address resolution protocol (ARP).
ARP -s inet_addr eth_addr [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 separated 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.Example:
> arp -s 157.55.85.212 00-aa-00-62-c6-09 .... Adds a static entry.
> arp -a .... Displays the arp table.

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