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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...
Gratuitous ARPcould mean both gratuitous ARPrequestor gratuitous ARPreply. Gratuitous in this case means a request/reply that is not normally needed according to the ARP specification (RFC 826) but could be used in some cases. A gratuitous ARP request is anAddressResolutionProtocolrequest packet whe...
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...
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...
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...
gratuitous arp request is the one where the source and destination ip address will be of the host itself which issues the request and is broadcast to the subnet and normally there will not be a reply. why would a host broadcast a garp request such as this one and not want a reply......
# 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 ...
ignored gratuitous arp hello, can anyone help about this persistent log issue that is being broadcast on my switch vlan. i don't know the cause of the consistent broadcast arp and would like to know the solution to it. switch model: c3850-48u switch version: 03.07.02e sw image: cat3k...