3 ms·
> I wonder how many hops it will actually remove. Hopefully a lot! Fun fact, IPv4 and IPv6 have a maximum network size. Because of the TTL field in v4 (renamed
by dahfizz 6y ago
> I wonder how many hops it will actually remove.
Hopefully a lot! Fun fact, IPv4 and IPv6 have a maximum network size. Because of the TTL field in v4 (renamed max hops in v6), a path through an IP network can never be more than 255 hops long.
- xxpor 6y agoYou can tunnel though, so the actual amount of hops could be infinite. Routers can also rewrite the field.
- dahfizz 6y agoAnd just like NAT with IPv4, we will use hacks to get around implementing a proper solution for decades (and counting). With satellite internet taking off, and actual interest in extraterrestrial colonies from e.g. NASA and SpaceX, I think we need a proper space communication protocol. Maybe it can all be solved in L2, but I think we will soon be looking at 255 hops the way we look at the limited address space of v4.
- nitrogen 6y agoIt seems people are working on this: https://en.wikipedia.org/wiki/Interplanetary_Internet https://en.wikipedia.org/wiki/Interplanetary_Internet
- rmdashrfstar 6y agoThanks for posting this, reading about all the progress made with delay tolerant networking is exciting!
- AdrianoKF 6y agoInteresting (but probably not too surprising) to see that DTN research is alive and kicking! I wrote a short seminar paper on DTN protocols as an undergrad in '09, so thanks for the trip down memory lane!
- tinus_hn 6y agoHops are artificial, as long as you are 100% sure you’re not introducing loops you can just tell routers not to decrease the TTL and they’ll be invisible. It’s just that if you do that and you do introduce a loop the packets will keep looping and the network will very quickly overflow.