TCPIP 510 under z/VM 4,4

[Wakser, David]

All:

        We are having a strange problem. Randomly, sometimes daily,
sometimes more often, and sometime less, the TCPIP stack under z/VM 4.4
seems (based on observations from VMMON) to "hog" the CPU (takes it
100%) and then completely fails to respond to any NETSTAT commands. The
version of the stack is 440 - which is what was supplied with z/VM 4.4

        Since this is an unsupported environment, which will take a
while to upgrade, is it possible to try running TCPIP 510 or 520 as the
stack in z/VM 4.4?  I just want to see if it will get us around this
problem.

        Thanks, in advance.

David Wakser
InfoCrossing