Re: Problem with Virtual CTCs between VM Linux guests and OS/390 2.10 IP Stack.

[Nick Gimbrone]

> The MTU sizes on both sides of the CTC connection must match.  Make both
> sides 32768 or something.  (VTAM CTC connections have the same issues!  If
> the buffer sizes don't match you get truncated PIUs...)  This is the nature
> of the CTC hardware (virtual or real).
No, it is in the nature of the drivers that they are not constructed such that
they automatically "discover" the other side's MTU. Such software could be
written, and it should be written... and then this configuration pitfall would
be long gone (as it should be).
Peace. -njg