Why Ttl Value Is 128?

By default, in Windows and many other OS's, the TTL will be 128 — that means that after a packet passes through 128 routers, if it hasn't reached it's final destination yet, the packet will expire and will be removed from the network.

What is TTL 126?

The TTL value is an 8-bit field, which means it can contain a value between 0 and 255. ... For example, if NNM sniffed a server sending a packet with a TTL of 126, it detects that 128 is two hops away. NNM does not know the IP address of the in-between routers.

What does TTL value mean?

Time-to-live (TTL) is a value for the period of time that a packet, or data, should exist on a computer or network before being discarded. ... For example, TTL is a value in an Internet Protocol (IP) packet that tells a network router when the packet has been in the network too long and should be discarded.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.