Questions tagged [arp]
ARP (Address Resolution Protocol) is a protocol used to find an address from the link layer (Ethernet, for example) from the network layer address (such as an IP address).
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What is the default ARP cache timeout for Windows 10?
All I can find for the default time an ARP entry remains in the cache before being removed for any Windows is all the way back from Windows 2000 or XP. It seems like 10 minutes is common for Windows, ...
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Finding IP Address from MAC of a device in a different subnet
I am new to networking as such, but I have been searching a lot about the problem of finding IP from MAC for the past couple of days. I have a device whose MAC address I know and I have an Android app ...
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DD-WRT router causing IP address conflicts across network
My DD-WRT router has lost its mind!
(Caveat: technically neither of these devices are "routing". I'm going to call them routers anyway.)
I just set up two DD-WRT routers, one as a WAP (...
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I don't recognize this HW address format
I'm looking at the contents of /proc/net/arp from a google wifi onhub's diagnostic report and the format of the HW address is confusing because it's missing a character and ends with an asterix. Does ...
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WiFi Range Extenders, and Failing ARP requests
I'm working on a network, as outlined below - a BT HomeHub 5, and a Netgear EX6150 WiFi extender. There are other points on the network though I've left them out for brevity, and all of the pink ...
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ARP requests sent on different subnets
I am quite confused with an experiment I made at home. I have two computers, say A and B:
A and B are connected (ethernet) to the same private network (with a gateway to the internet) 192.168.1.99/24 ...
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Why can't I ping while I can see in ARP?
There are several questions asked the same way; I have been trying various solutions for 3 days with no luck; that's why I am asking from scratch.
I have a wireless router and a wireless access point ...
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why doesn't system do ARP request broadcast before sending an IP packet?
First, let me describe the problem briefly. I have two programs which send IP packets from a host(192.168.0.101) to another host(192.168.0.106). These two programs are written respectively with C and ...
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Prevent ARP spoofing in AP, “wl deauthenticate” command
I am in a situation where I cannot do MAC filtering in an AP and I need to block a user that is ARP spoofing the network. I am trying to use the command wl deauthenticate to kick the client. And I ...
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Wake-on-LAN stops working after a few hours
I have a Linux server (Ubuntu 12.04.03) which serves as the internet gateway for our LAN of about 15 PCs. That is, eth0 on the Linux server is the Internet, and eth1 plugs into an unmanaged switch (a ...
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Linux ARP source address wrong, when pinging from different interface
I'm seeing some weird behavior, and was hoping someone could explain to me why this is happening:
I have a linux box with two physical interfaces:
arnout@arnout-VirtualBox ~ $ ifconfig
eth0 ...
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Window 8 machine cannot ping devices on same subnet
After returning from vacation during which several Windows updates were applied and my router suffered a hard power cycle, my Windows 8 Desktop can no longer ping other devices on the same subnet. ...
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Why am I seeing ARP requests for addresses outside of subnet
In my home network I have a router running Linux, with several VLANs coming into the same physical interface.
This is what things look like on the router:
➜ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> ...
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Windows ARP retry interval
I have noticed the following behavior with Windows 10. I am sending an ICMP packet every second or so to a valid IPV4 address using the Windows ping utility. I then remove the device from the ...
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Does a router's ARP table contain the MAC address for all destination IPs?
Let's say we have the following configuration.
WAN - Router -------------------- Switch --------- Client
| |
Multiple switches connected to router |
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