^(ARP)Windows中的ARP或地址解析协议^{(Address Resolution Protocol)}负责将 IP 地址解析为MAC 地址^{(MAC addresses)}，以加快通过本地网络的连接。因此，它不再询问路由器特定设备在哪里，而是简单地使用已解析的 IP 快速连接。为此，它维护了一个名为ARP Cache的缓存。这篇文章帮助您了解和清除Windows 11和Windows 10中的ARP 缓存^{(ARP Cache)}。

为什么需要清除ARP 缓存^{(ARP Cache)}？

与DNS 缓存^{(DNS Cache)}类似，ARP 缓存^{(ARP Cache)}也会变得陈旧。如果网络上连接的设备的 IP 地址发生变化，则可能会导致难以找到这些设备。因此，如果ARP 缓存^{(ARP Cache)}过时或已损坏，则需要修复它。清除ARP缓存的主要缺点之一是重建ARP缓存的过程可能会导致错误。

如何在Windows 11/10ARP 缓存^{(ARP Cache)}

您可以使用这些方法来解决ARP 缓存^{(ARP Cache)}问题。

1. 路由和远程服务
2. 使用 netsh 工具的命令提示符

由于这是一项管理任务，因此这些方法将需要管理员权限或用户帐户来修复它。

1] 路由和远程服务

• 按^(Press)键盘^(Keyboard)上的开始^(Start)按钮并键入计算机管理^{(Computer Management)}
• 一旦它出现在列表中，点击打开它
• 单击^(Click)服务^(Services)和应用程序^{(Applications)}，然后单击服务^(Services)
• 找到路由^(Routing)和远程^(Remote) 服务^(Services)并双击打开它
• 首先，停止服务，然后选择禁用它。
• 重新启动PC，然后回到同一个地方，并启​​用它。

此过程将清除PC 上的所有ARP或 IP 到MAC地址的映射。^(MAC)

2]使用netsh工具的命令提示符

netsh 工具是一个命令行实用程序，它提供了删除ARP缓存的直接选项。您可以在PowerShell^(PowerShell)或Windows Terminal或具有管理员权限的命令提示符^{(Command Prompt)}上运行此命令。

• 使用 WIN + X 打开电源菜单。
• 选择Windows 终端^{(Windows Terminal)}（管理员）启动它
• 键入netsh interface IP delete arpcache并按Enter键执行命令。
• 您将得到的只是一个确定的响应。

您也可以使用以下命令显示和清除ARP缓存

arp –a //to display the ARP cache
arp –d //to clear ARP cache

最后，如果有帮助，您还可以选择重新启动 PC。

是否可以清除特定 IP^{(Particular IP)}的ARP 缓存^{(ARP Cache)}

arp -d 命令可以做到这一点，即arp -d 192.168.100.1。如果特定 IP 到MAC地址失败，并且您想快速解决它，它会非常方便。

ARP 条目在^{(ARP Entry)}Windows中持续多长时间^(Long)？

ARP 缓存^{(ARP Cache)}的典型超时时间为10 到 20 分钟，但缓存会自动清除。下次 PC 或任何设备请求该地址时，需要重新映射。

什么是 ARP 协议？

地址解析协议^{(Address Resolution Protocol)}或APR从计算机硬件的 IP 地址（即MAC地址或机器地址^{(Machine Address)}）中获取数据。类似于^(Similar)如何将网站名称转换为 IP 地址，IP 地址进一步转换为机器地址^{(Machine Addresses)}。

什么是不完整的 ARP 条目？

这是针对单个 IP 地址的。检查ARP条目时，如果您注意到条目旁边不完整，则设备已发出ARP请求但尚未收到响应。

ARP会出现什么问题？

MAC地址欺骗和通信延迟。第一个发生在手动配置ARP时，第二个发生在网络中有多个^(ARP)ARP广播时。

我希望这篇文章很容易理解，并且您现在知道如何在Windows 11和 10中清除ARP 缓存。^{(ARP Cache)}

How to clear ARP Cache in Windows 11/10

ARP or Address Resolution Protocol in Windows is responsible for resolving IP addresses to MAC addresses to speed up connection over a local network. So instead of asking the router where is a particular device, again, it would simply use the already resolved IP to connect quickly. To get this done, it maintains a cache named ARP Cache. This post helps you understand and clear ARP Cache in Windows 11 and Windows 10.

Why Do You Need to Clear the ARP Cache?

Similar to DNS Cache, ARP Cache can get stale. If the IP address of the connected devices on the network change, then may result in difficulty in finding those devices. So if the ARP Cache is stale or has been damaged, then you need to fix it. One of the major downsides to clear the ARP cache is that the process of rebuilding the ARP cache may result in errors.

How to Clear ARP Cache in Windows 11/10

You can use these methods to resolve the ARP Cache issue.

1. Routing and Remote Services
2. Command Prompt with netsh Tool

Since it’s an administrative task, the methods will need admin permission or a user account to fix it.

1] Routing and Remote Services

• Press the Start button on the Keyboard and type Computer Management
• Once it appears on the list, click to open it
• Click on Services and Applications and then Services
• Locate the Routing and Remote Services and double click to open it
• First, stop the service and then choose to disable it.
• Restart the PC, and come back to the same place, and enable it.

This process will clear all ARP or IP to MAC address mapping on the PC.

2] Command Prompt with netsh Tool

netsh tool is a command-line utility that offers a direct option to delete the ARP cache. You can run this command on PowerShell or Windows Terminal, or Command Prompt with admin privileges.

• Use WIN + X to open the Power Menu.
• Select Windows Terminal (administrator) to launch it
• Type netsh interface IP delete arpcache and press the Enter key to execute the command.
• All you will get is an Ok in response.

You can also use the following command to display and clear the ARP cache

arp –a //to display the ARP cache
arp –d //to clear ARP cache

Finally, you can also choose to restart the PC if it helps.

Is It Possible to Clear ARP Cache for Particular IP

The arp -d command can do that, i.e., arp -d 192.168.100.1. It comes in very handy if a particular IP to MAC address fails, and you want to resolve it quickly.

How Long Does an ARP Entry Last in Windows?

The typical timeout for ARP Cache is 10 to 20 minutes, but the cache is cleared automatically. The next time the PC or any device requests for that address, a fresh mapping is required.

What Is ARP Protocol?

Address Resolution Protocol or APR takes data from IP addresses from the computer hardware, i.e., MAC address or Machine Address. Similar to how a website name is converted into an IP address, IP addresses are further converted to Machine Addresses.

What Is an Incomplete ARP Entry?

This is for individual IP addresses. When checking on the ARP entries, if you notice incomplete next to an entry, the device has issued an ARP request but is yet to receive a response.

What Problems Can Occur With ARP?

MAC addresses spoofing and communication delays. While the first happens when ARP is manually configured, the second is when there are multiple ARP broadcasts in a network.

I hope the post was easy to follow, and you now know how to clear ARP Cache in Windows 11 & 10.

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