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The Question is:
Hi,
I keep getting these OPCOm Message:
%%%%%%%%%%% OPCOM 23-AUG-2000 12:14:04.46 %%%%%%%%%%%
Message from user DECNET on SKBV00
DECnet event 0.3, automatic line service
From node 36.10 (SKBV00), 23-AUG-2000 12:14:00.27
Circuit MNA-0, Load, Line communication error
%SYSTEM-F-DATACHECK, write check error
Node = 13.104 (SKBS04), File = MOM$SYSTEM_SOFTID:SH1601ENG
Operating system, Ethernet address = 08-00-2B-26-7F-B3
%%%%%%%%%%% OPCOM 23-AUG-2000 12:47:51.10 %%%%%%%%%%%
Message from user DECNET on SKBV00
DECnet event 0.3, automatic line service
From node 36.10 (SKBV00), 23-AUG-2000 12:47:46.58
Circuit MNA-0, Load, Line communication error
%SYSTEM-F-DATACHECK, write check error
Node = 13.100 (SKBS00), File = MOM$SYSTEM_SOFTID:SH1601ENG
Operating system, Ethernet address = 08-00-2B-26-86-14
What does this mean?
This is coming from two DECServer 300 terminal servers.
The Answer is :
This message is originating from a error detected by DECnet Phase IV
on an OpenVMS VAX node, with the error resulting from a failed MOP
download operation. The failure is occuring because the DECserver 300
is repeatedly requesting a download of the SH1601ENG file.
This error could be caused by a network hardware problem (check for
various counters incrementing in your NCP database), or by excessive
collisions, or potentially by a MOP protocol mismatch (V3 vs V4).
If you should see Remote Failure to Defer, Block Check and Framing
Errors, these are generally indicative of network hardware problems
-- though these Block Check and Framing Errors do not usually cause
DATACHECK errors.
An attempt at downloading the same device blocked by a parallel MOP
download -- this can arise with multiple nodes answering the same MOP
request -- usually does not produce DATACHECK errors.
The OpenVMS Wizard would check the firmware revision of the DEMNA module,
and would also inspect the Ethernet cabling for validity -- including a
check to ensure the total length of the LAN segment does not exceed the
limits, and to check that the number of bridges or repeaters included
in the segment does not exceed the limits.
The OpenVMS Wizard would also generally move to LANCP for MOP downloads
and related operations.
As more information will be required, please contact the Compaq Customer
Support Center.
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