Question

arp -a显示的内容是什么

求 arp 命令全

Answer 1

ARP -A 显示的是你和哪个主机（路由器也算）联系过．比如你上网，就会有路由器的IP和MAC（物理地址）显示出来，你和别人主机联系过，就会显示别人的IP和MAC
ARP －D再ARP －A 就什么都没了，－D 就是清除IP和MAC
ARP －S 网关IP 网关MAC 绑定网关（防止ARP攻击）
ARP －G 和ARP －A 一样

Answer 2

通过网络连接你电脑或给你电脑发过信息的IP。

Answer 3

-a Displays current ARP entries by interrogating the current
protocol data. If inet_addr is specified, the IP and Physica
addresses for only the specified computer are displayed. If
more than one network interface uses ARP, entries for each AR
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. inet_addr may be
wildcarded with * to delete all hosts.
-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.