There are no other files named decnet-hotline-spr.mem in the archive.
How to Deal with Network Problems
If you have a problem with your network there are two
actions that you can take. You can do everything possible
to recover from the error to get the network back on the air
as fast as possible, or you can collect all the information
necessary for problem analysis. (A combination of the two
is also possible.)
A communications network contains many components which
can fail. Quick recovery may be as easy as restarting a
program, or turning off a line. The key is isolation of the
problem. The following paragraphs outline a number of
situations and what can be done in each to circumvent the
problem and recover quickly.
APPLICATION FAILS. If the application level program
fails, try it again. A number of network errors are related
to limited resource problems. When more of the resource is
free the problem goes away.
NETCON FAILS. When commands to the NCP subset of OPR
fail to give a response, NETCON may be hung in some way.
Remember that some commands take a long time, or may never
be executed (i.e. an executor which doesn't exist). If the
SHOW EXECUTOR command doesn't respond NETCON is probably
hung. Application programs will continue to work without
NETCON, so that you can easily restart it without
interfereing with netwrok operations. Follow the
instructions in the manual for restarting NETCON.
FRONT-END CRASH. NETCON will automatically dump and
reload the front end.
MODEM and LINE PROBLEMS. If your error rate (SHOW
COUNTS COMMAND) for a line is high, or the line fails
completely. you may have a backup modem, or dial
capability. Just set the line off, establish the new
connection and set the line on again.
How to Deal with Network Problems Page 2
If you choose to work on your network problem before
calling on the hotline or writting an SPR remember that your
first goal is to collect sufficient information, then to
isolate the problem, then to solve or circumvent it. After
taking the following steps to gather preliminary
information, consider using any of the tools on the SWSKIT,
a datascope, and other specialists in your office if its a
If you choose to call the hotline or prepare an SPR to
solve a problem with a DECnet network, you should gather the
following materials at a minimum. More information, or the
use of a datascope could be required.
1) A complete description of the configuration
including all the nodes, their system types, names, node
numbers, comm interfaces, line speeds, modem types, and
anything else you can think of.
2) A description of the problem. Include the time of
day and anything that happened in the systems which seemed
out of the ordinary. If you have just upgraded or changed
your configuration describe the changes you made. Include
with this information console sheets and listings of any
possible offending programs.
3) The syserr file, or syserr listing
(DECsystem-2040/50/60 only) and the console sheets. The
DECsystem-2020 does not record syserr entries for DECnet-20
V2.0. For other systems include the output from the log
4) All documents associated with the generation or
definition of the network. For the KL based DECsystem-20's
this includes the NETGEN saved image file,
NETGEN-CONFIG.IMAGE, the log from the network build,
BUILD-ALL.LOG, all STB and MAP files, and CETAB.MAC (i.e.
the entire contents of the directory that you are requested
to create in the installation instructions.) For all TOPS-20
systems this includes the 4-CONFIG.CMD file and any command
files given to the NCP subset of OPR at system start up
time. For non TOPS20 systems, this includes all documents
generated during the NETGEN process.
5) And finally, any dumps that are available. Remember
that a KL or KS dump requires the MONITR.EXE file for
symbols definition and the front end dump requires all STB
and MAP files for symbol definition.
How to Deal with Network Problems Page 3
If your network is a heterogeneous network, the problem
may not be easily solved by the information from one node
alone. If you prepare an SPR or call the hotline, have the
information for all the nodes ready. The network software
support staffs work together to solve network problems in
mixed networks. Please make only one call to one of the
hotlines. Make it clear that you have a network of mixed
node types and we will make the rest of the contacts.
Thanks, and enjoy DECnet.