Templin, Fred L wrote:
I'm not sure that a randomly-chosen "skip" value is even necessary.
It is not necessary, because, for ID uniqueness fundamentalists, single event is bad enough and for most operators, slight possibility is acceptable.
Outer fragmentation cooks the tunnel egresses at high data rates.
Have egresses with proper performance. That's the proper operation.
End systems are expected and required to reassemble on their own behalf.
That is not a proper operation of tunnels.
Thus, don't insist on having unique IDs so much.
Non-overlapping fragments are disallowed for IPv6, but I think are still allowed for IPv4. So, IPv4 still needs the unique IDs by virtue of rate limiting.
Even though there is no well defined value of MSL?
I'm talking about not protocol recommendation but proper operation.
I don't see any operational guidance recommending the tunnel ingress to configure an MRU of 1520 or larger.
I'm talking about not operation guidance but proper operation. Proper operators can, without any guidance, perform proper operation. Masataka Ohta