Why pinging an unreachable network I receive the router response (ICMP unreachable) for every packet, while sending, for istance, UDP packets the router responds sometimes only ? From what I understood the ICMP unreachable rate limit ( one every 500 msec by default) should work for both cases.
If the router receives a nonbroadcast packet destined for itself that uses a protocol the router does not recognize, it sends an ICMP Protocol Unreachable message to the source.
If the router receives a datagram which it is unable to deliver to its ultimate destination because it knows of no route to the destination address, it replies to the originator of that datagram with an ICMP Host Unreachable message. Use the ip unreachables interface subcommand to enable or disable the sending of these messages. The full syntax for this command follows.
no ip unreachables
The no ip unreachables subcommand disables sending ICMP unreachable messages on an interface.
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.