>could you post your DEVICE/LINK pair from PROFILE TCPIP? >David To simplify testing we set up a second tcp/ip in the second lpar and connected the two over a real ctc. We saw the same failures as we saw by using SLES in the second lpar.
lpar one ---------- attach 448 tcpip 720 attach 449 tcpip 721 lpar two ---------- attach 508 tcpip 720 attach 509 tcpip 721 > ; lpar one tcp/ip device/link DEVICE CTCVDEV4 CTC 720 LINK CTCVLNK4 CTC 1 CTCVDEV4 ; lpar two tcp/ip device/link DEVICE CTCVDEV4 CTC 0720 LINK CTCVLNK4 CTC 0 CTCVDEV4 MTU 1500