is the 16-bit length identification from the IP packet header big enough?

Question

I am just wondering such a simple question.

As far as I know, the identification, which is a 2-octet length data, is used to identify datagrams when fragments are made, however, the maximum number capable of a 16-bit integer is 65536, so my question is, what will happen when we've more than 65536 datagrams to send in a short time?

thanks in advance and sorry for the poor English :)

Answer 1

RFC 4963 Abstract:

IPv4 fragmentation is not sufficiently robust for use under some conditions in today's Internet. At high data rates, the 16-bit IP identification field is not large enough to prevent frequent incorrectly assembled IP fragments, and the TCP and UDP checksums are insufficient to prevent the resulting corrupted datagrams from being delivered to higher protocol layers. This note describes some easily reproduced experiments demonstrating the problem, and discusses some of the operational implications of these observations.