On 1/16/2014 2:32 PM, Ross Callon wrote:
These tunnels are stateless
yep. (But they don't have to be.)
The tunnels strictly speaking do not have to be stateless. However, if you want
routers to actually implement them, and you want to scale in both forwarding
speed and number of tunnels, then yes they do have to be stateless.
There's clearly a problem though:
- tunnels must be stateless to be efficiently implemented
- transport layer tunnels must have congestion control
Saying that the only way we can make tunnels cheap is to make them break
the Internet isn't a good solution.
Maybe it's time to expect something that's inherently costly to end up
being expensive?
Joe