Linux常用命令-arp

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命令

arp

描述

manipulate the system ARP cache
显示ARP缓存,MAC地址表

用法

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arp [-vn]  [<HW>] [-i <if>] [-a] [<hostname>]             <-Display ARP cache
arp [-v]          [-i <if>] -d  <host> [pub]               <-Delete ARP entry
arp [-vnD] [<HW>] [-i <if>] -f  [<filename>]            <-Add entry from file
arp [-v]   [<HW>] [-i <if>] -s  <host> <hwaddr> [temp]            <-Add entry
arp [-v]   [<HW>] [-i <if>] -Ds <host> <if> [netmask <nm>] pub          <-''-

选项

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Options:
  -a                       display (all) hosts in alternative (BSD) style
  -e                       display (all) hosts in default (Linux) style,默认选项
  -s, --set                添加一条arp记录
  -d, --delete             删除一条arp记录
  -v, --verbose            be verbose
  -n, --numeric            不解析主机名
  -i, --device             指定网卡接口,如eth0
  -D, --use-device         读取指定设备接口的mac地址
  -A, -p, --protocol       specify protocol family
  -f, --file               读取并添加指定文件中的记录,默认文件为/etc/ethers
  <HW>=Use '-H <hw>' to specify hardware address type. Default: ether

注意

无

示例

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$ arp -V
net-tools 2.10-alpha
# 显示arp表
$ arp -a
gateway (192.168.80.2) at 00:50:56:eb:3a:16 [ether] on eth0
? (192.168.80.81) at 00:50:56:3f:16:9b [ether] on eth0
$ arp -e
Address                  HWtype  HWaddress           Flags Mask            Iface
gateway                  ether   00:50:56:eb:3a:16   C                     eth0
192.168.80.81            ether   00:50:56:3f:16:9b   C                     eth0
# 添加一条arp记录
$ arp -i eth0 -s 192.168.80.20 00:50:56:11:22:33
$ arp
Address                  HWtype  HWaddress           Flags Mask            Iface
gateway                  ether   00:50:56:eb:3a:16   C                     eth0
192.168.80.81            ether   00:50:56:3f:16:9b   C                     eth0
192.168.80.20            ether   00:50:56:11:22:33   CM                    eth0
# 删除记录
$ arp -i eth0 -d 192.168.80.20
$ arp
Address                  HWtype  HWaddress           Flags Mask            Iface
gateway                  ether   00:50:56:eb:3a:16   C                     eth0
192.168.80.81            ether   00:50:56:3f:16:9b   C                     eth0
# 从文件中读取mac地址批量添加
$ more file
192.168.10.10  00:50:56:10:10:10
192.168.10.11  00:50:56:10:10:11
192.168.10.12  00:50:56:10:10:12
$ arp -i eth0 -f file
$ arp
Address                  HWtype  HWaddress           Flags Mask            Iface
gateway                  ether   00:50:56:eb:3a:16   C                     eth0
192.168.80.81            ether   00:50:56:3f:16:9b   C                     eth0
192.168.10.10            ether   00:50:56:10:10:10   CM                    eth0
192.168.10.11            ether   00:50:56:10:10:11   CM                    eth0
192.168.10.12            ether   00:50:56:10:10:12   CM                    eth0