Last night I setup a CTC from S/390 RH 7.2 Linux to OS/390 2.7 system.
I setup my CTC in the OS/390 stack in the same subnet as the OSA card in that
stack.
Then I rebuilt my OAT so that it would listen for the OSA and the CTC
addresses.
(with IPFORWARDING turned on, then the OSA will forward packets to my the
LINUX
lpars running with CTCs)
I got both ends of the CTC to come ACTIVE and READY.
I can ping both CTC's from their respective ends...but can not ping
the other end of the CTC.
I have read lots and I think I have most CTC CAVEATS covered,
but apparently I've missed one!!!
I know I'm supposed to have a 255.255.255.255 mask at each end,
but I'm not sure I've got that on the OS/390 side.
I put this entry in GATEWAY
10.20.170.18 = CTC1 576 HOST
(note that the osa card in this stack has an address of 10.20.170.109 and a
mask of 255.255.240.0)
if that comes into play
I'm using IOBUFFERSIZE=32768
I'm using MTU 576
Looks like I'm dropping packets on the floor on the Linux side:
ctc0 Link encap:Serial Line IP
inet addr:10.20.171.18 P-t-P:10.20.171.16 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MTU:576 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:130 dropped:130 overruns:0 carrier:130
collisions:0 txqueuelen:100
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
HELP!!!
Tia
Dave
