Comments about the test

No. Title Result Log Script Packet Dump
(bin)		 Dump
(txt)
5 Test that host detect Path MTU increase WARN X X X Link0 Link0

Category

MAY

Commentaries

The test exits WARN because node do not attempt to detect increases in PMTU.

In RFC1981, this function "MAY" execution.

References

[RFC1981] 4.Protocol Requirements 

   Nodes using Path MTU Discovery MUST detect decreases in PMTU as fast
   as possible.  Nodes MAY detect increases in PMTU, but because doing
   so requires sending packets larger than the current estimated PMTU,
   and because the likelihood is that the PMTU will not have increased,
   this MUST be done at infrequent intervals.  An attempt to detect an
   increase (by sending a packet larger than the current estimate) MUST
   NOT be done less than 5 minutes after a Packet Too Big message has
   been received for the given path.  The recommended setting for this
   timer is twice its minimum value (10 minutes).







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