Hello Eric,
I had a similar problem a couple weeks ago. For CTCs make sure that a
read channel on one side is paired with a write channel on the Linux side
and viceversa.
You might have genned something like
System A:
IODEVICE ADDRESS=(500,2),CUNUMBR=001, x
UNIT=CTC,UNITADD=0
System B:
IODEVICE ADDRESS=(600,1),CUNUMBR=001, x
UNIT=CTC,UNITADD=1
IODEVICE ADDRESS=(601,1),CUNUMBR=001, x
UNIT=CTC,UNITADD=0
If not you need to reverse the order in your IP definition or parms to the
channel device layer
I had to reverse the order of the device specification, also you have to
specify "3" to set the OS/390 protocol on the ctc0 parms. The 32 is for a
buffersize of 32K. Insure your IP CTC Device is active with
<V TCPIP,,STO,ctcdev>
<V TCPIP,,STA,ctcdev>
You probably also have a VTAM CTC definition that should be active. Try
something like below for channel device layer parms
-"Please enter any paramete4rs you need to pass to the channel device
layer
<ctc0,0x0D01,0x0D00,32,3,0,0>
Then check your MTU sizes match with <ifconfig>
If they do not
<ifconfig ctc0 down>
<ifconfig ctc0 your.linux.ip.addr pointopoint your.peer.ip.addr mtu
mtusize>
Richard W. Lauck
Cornerstone Systems, Inc.
Sr. Systems Programmer
IBM Certified S/390 Parallel Sysplex Systems Programmer
IBM Certified S/390 Parallel Sysplex Operator
IBM Parallel Sysplex Top Gun
(425)489-4579 Direct - Home Office
(425)453-5166 x9024 Voice Mail
(425)486-4501 Home
(888)505-4534 Pager
Eric Bielefeld
<[EMAIL PROTECTED] To: [EMAIL PROTECTED]
m> cc:
Sent by: Linux on Subject: CTC Connection Question
390 Port
<[EMAIL PROTECTED]
IST.EDU>
03/25/2003 01:40
PM
Please respond to
Linux on 390 Port
I've been trying to get my network connected to my LINUX Lpar through a CTC
connection. I think I have everything defined correctly. I did the IOCDS
change last week, and put a couple of definitions in my MVS TCPIP Profile.
I hooked up an Escon cable between 2 chpids. When I IPL Linux, I get the
following error messages:
ctc0: unknown interface; No such device
SIOCSIFDSTADDR: No such device
ctc0: unknown interface; No such device
I put most of the answers to the networking questions in my PARM.LINE file.
I still get one question that asks:
Please enter the parameters you need to pass to the channel device layer:
and then has an example. I reply:
"ctc0,0D00,0D01"
What is going wrong? I've tried several different combinations, and always
get the 3 messages above. I can send the things I've changed if that is
necessary. I'll be out in the computer room and away from my PC trying
this again. I will check for replies before I go home. I have to be
somewhere, so I can't stay very late. I'll be here till 4:45 Central time.
Otherwise, I'll reply in the morning. Thanks in advance.
Eric Bielefeld
Sr. MVS Systems Programmer
P&H Mining Equipment
Milwaukee, WI
414-671-7849
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