This document discusses the causes of
LOGDATA error messages on a Channel Interface
Processor (CIP) or a Channel Port Adapter (ECPA) router. It also discusses the
steps to take to remedy this condition.
In the majority of cases, LOGDATA error
messages are due to hardware problems, specifically cables, the Enterprise
System Connection (ESCON) Director, or connectors. In many cases, the problem
can be solved if you clean the optics and ensure that the cables are properly
Note: Although this document primarily refers to a CIP, the errors and
troubleshooting methods apply equally to a ECPA card.
There are no specific requirements for this document.
The information in this document is based on an ESCON CIP or ECPA with
an ESCON-attached Mainframe.
For more information on document conventions, refer to the
Technical Tips Conventions.
LOGDATA error messages appear in the CIP
router console log in the format shown in the next code example. They begin
with address 0000 and end with address
The entire log must be captured, from the
%ADAPTER-6-LOGOUT: Port 0 logout data line to
the %ADAPTER-6-LOGDATA: 0D80 line. For this
reason, it is recommended that you set logging
buffered to at least 80000 on all CIP and ECPA
Jan 7 09:31:50 CST: %CIP2-6-MSG: slot2 %ADAPTER-6-LOGOUT: Port 0 logout data.
Adapter microcode C50602D4
Jan 7 09:31:50 CST: %CIP2-6-MSG: slot2 %ADAPTER-6-LOGDATA: 0000 D5E2C3C1
00000D60 0A000120 00000000 FDE81572 0048A000 00000000 E8000000
Jan 7 09:31:50 CST: %CIP2-6-MSG: slot2 %ADAPTER-6-LOGDATA: 0020 00000800
08180001 08D38400 07D301A1 10120C00 5D000010 0048A000 01000000
Jan 7 09:31:50 CST: %CIP2-6-MSG: slot2 %ADAPTER-6-LOGDATA: 0040 00000000
00400003 C6010000 A0C20001 00114100 00117940 00112400 00118100
LOGDATA error messages only occur on
ESCON channel connections. Most of the time,
LOGDATA records indicate that there was some
type of transmission error or protocol error on the link. In order to
troubleshoot this error condition, a few questions must be answered:
Did this error condition cause an outage?
Is this the first occurrence of this error?
Were there any changes at the physical layer, for example cables, the
ESCON Director, and so forth?
If this error condition did not cause any outage,
then it was a recoverable code violation. If this error condition
did cause an outage (for example, a fatal error), further
investigation is required.
For transmission errors, the most likely causes are poorly seated
cables, dirty optics, bad transmitting LEDs, or bad receivers.
Protocol errors indicate that either the CIP, the ESCON Director, or
the mainframe violated the ESCON protocol. Most of these errors (even the
protocol errors) are recoverable without the application (virtual
telecommunications access method [VTAM] or TCP/IP) even knowing about
A good place to start to troubleshoot is with the
extended channel statistics
extended channel subchannel
commands. If there clearly
were transmission errors, make sure that you clean the optics and that the
cables are properly seated. Some bit errors are not reported in the statistics;
so, even if those statistics are 0, there still could have been a code
In 99.999% of all cases, LOGDATA error
messages are due to hardware: cables, the ESCON Director, or connectors. In
either case, the error dump can only be analyzed by IBM and may not always be
conclusive. Given that 99.999% of the time this is due to hardware, it is
extremely important to completely eliminate hardware issues before you consider
sending your error dump to be decoded. Also, when you run the latest available
CIP microcode, you ensure that any fixes for these issues are applied. Once you
rule out hardware problems, Cisco Technical Support can send the dump to IBM
Note: It is important to again note that all CIP routers should have
logging buffered 80000, at the very least, so that the full dump is captured.
If your syslog server address is unreachable and the log output is lost because
your logging buffered is only 4000, then you will have to wait for another
occurrence to find out what happened. This is undesirable.
Note: Each occurrence of the error starts with Port 0 logout
%CIP2-6-MSG: slot5 %ADAPTER-6-LOGOUT: Port 0 logout data.
Adapter microcode C50602D4
Each occurrence ends with
%CIP2-6-MSG: slot5 %ADAPTER-6-LOGSAME: 0D80 to 1000
Note: In some customer environments, LOGDATA
records with multiple error messages can occur when the mainframe takes longer
than 500 ms to respond to device-level activity. The ESCON architecture states
that this timeout value can range from 400 ms to 850 ms. To avoid some of the
occurrences of LOGDATA, use CIP21-21 or higher
or CIP22-28 or higher, as per Cisco bug ID
(registered customers only)