01-14-2008 10:18 PM - edited 03-05-2019 08:28 PM
Can someone explain to me in details on what basis the TTL value is displayed when we ping a remote host.
I am pinging a remote host from my WindowsXP system. Sometimes the TTL value is less than 127 and some times its close to 255. Both the resources are on internet.
02-14-2019 04:59 AM
Hi Richard,
Tried to google your info but no luck.
Would you be kind enough to explain this in detail please. I would appreciate if you could share any documents?
Not sure how my router which is default gateway setting the TTL value for a ping which my PC generated.
06-13-2017 11:44 AM
Hello,
Found this clarifying paragraph in the original internet protocol RFC791 document.
The Time to Live is an indication of an upper bound on the lifetime of an internet datagram. It is set by the sender of the datagram and reduced at the points along the route where it is processed. If the time to live reaches zero before the internet datagram reaches its destination, the internet datagram is destroyed. The time to live can be thought of as a self destruct time limit.
Basically, it prevents a packet from looping around the network forever.
Cheers!
Kristof
01-25-2024 10:55 PM
Hago esta explicación para los de habla en español y si llegaste hasta aqui buscando respuesta.
Cuando un paquete ping llega a su destino, el destino revisa el valor del TTL y si está todo bien, entonces responde REINICIANDO en valor del TTL: Si responde windows, lo reinicia con 128; si responde cisco, lo reinicia con 255. Luego en su camino de retorno vuelve a decrementarse y ese valor decrementado es el que se presenta al que hizo el ping.
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