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Gratuitous ARP Proxy ARP Fast ARP Reply VLAN-based Layer 2 Proxy ARP BD-based Layer 2 Proxy ARP ARP Gateway Proxy ARP-Ping Licensing Requirements and Limitations for ARP Default Settings for ARP Configuring Static ARP Optimizing Dynamic ARP Configuring Proxy ARP Configuring the Fast ARP Reply Funct...
With strict ARP learning enabled, a device receiving a gratuitous ARP packet will check whether the source IP address of the packet is the same as the local IP address. If the IP addresses are the same, the device periodically broadcasts a gratuitous ARP Reply packet to announce the address...
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Gratuitous ARP is also used to send updated hardware address information. Systems that receive gratuitous ARP reply packets will automatically update the ARP table with the IP address with the new MAC Address. For example, the switch to which the device is connected can update its MAC Address ta...
# arping -A -c {Number} -I {Interface-Name-HERE} # arping -U 1.2.3.4 -I eth1 The following command will send a Gratuitous ARP reply, four times, on the eth1 interface for IP address 1.2.3.4. # arping -c 4 -A -I eth1 1.2.3.4 ...
# arping -A -c {Number} -I {Interface-Name-HERE} # arping -U 1.2.3.4 -I eth1 The following command will send a Gratuitous ARP reply, four times, on the eth1 interface for IP address 1.2.3.4. # arping -c 4 -A -I eth1 1.2.3.4 ...
Gratuitous ARP，被翻译为“免费ARP”，也被称为“无故ARP”，其实相比于“免费”这个翻译，“无故”会更好理解：“在没有人问自己的情况下，无缘无故自问自答”。Gratuitous ARP不同于一般的ARP 请求，它并不是期待得到IP相应的MAC地址，而是当主机启动的时候，将发送一个Gratuitous arp请求，即请求自己的IP...
I am focusing on this statement from the original poster "I am concerned about the duplicate MAC addresses created in an ARP table from a gratuitous ARP reply (not ip addresses)." If I am interpreting this correctly the concern is not about multiple entries for the same IP,...
@@ -73,6 +73,19 @@ config NET_ARP_GRATUITOUS ff:ff:ff:ff:ff:ff. Ordinarily, no reply packet will occur. A gratuitous ARP reply is a reply to which no request has been made. config NET_ARP_GRATUITOUS_TRANSMISSION bool "Transmit gratuitous ARP requests" depends on NET_ARP_GRATUITOUS ...