如何在Linux中ping MAC地址 [英] How to ping MAC address in Linux

问题描述

我想ping一个已知的MAC地址，我试图使用nmap：

I want to ping a known MAC address, I tried to use nmap:

sudo nmap -sP 192.168.15.1/24 | grep  20:64:32:3F:B1:A9

但在这种情况下它的ping全部为255 IP地址（从192.168.15.1到192.168.15.255）直到得到我的MAC地址，这需要很长时间大约4秒。

But in this case its ping all the 255 IP address (from 192.168.15.1 to 192.168.15.255) until get my MAC address, and that take a long time about 4 sec.!

有什么想法吗？

推荐答案

使速度更快的唯一方法是测试mac地址是否已经进入你的arp表

The only way to make it faster is to test if the mac address is already into your arp table

#!/bin/bash

# extract ip from local arp table
ip=$(arp | grep 20:64:32:3F:B1:A9 | awk ' { print $1 } ')

# found an ip tied to the mac address?
if [ ! -z $ip ]; then

    # if found, do you want to ping it?
    ping $ip
else
    echo "Not found into local arp table. Trying another way..."

    # wanna try your nmap strategy?
    # sudo nmap -sP 192.168.15.1/24 | grep  20:64:32:3F:B1:A9
fi;

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