My understanding of gratuitous ARP is that it is sent when the BIA MAC address is used with HSRP and not the (default) virtual MAC address. The problem with using the BIA is that each router in the HSRP group will have a different MAC address. When the standby changes, all local devices must change their ARP tables to the new MAC address. A gratuitous ARP is an un-requested ARP reply to force local systems to change their ARP tables. It does not work with all IP stacks.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.