Loading And Dumping Characteristics - Digital Equipment MUXserver 100 Reference Manual

HEARTBEAT
Collision detect circuitry senses the collision of messages transmitted on the
Ethernet. HEARTBEAT is a characteristic that indicates the status of the col-
lision detect circuitry at the MUXserver 100 transceiver.
For all DIGITAL Ethernet transceivers, and others supporting collision detect
circuitry, the HEARTBEAT characteristic should be enabled for error-free op-
eration.
If
your transceiver does not support the testing of collision detect cir-
cuitry, enter DISABLED for HEARTBEAT. The default is ENABLED.
Discuss the HEARTBEAT characteristic with your network manager.
2.4.2 Loading and Dumping Characteristics
The DUMP and SOFTWARE characteristics affect down-line load and up-line
dump operations.
DUMP
If the server software detects a fatal error, it performs a fatal bugcheck and
reinitializes. When you define DUMP as ENABLED, you enable up-line dumps
of server memory when fatal bugchecks occur. An up-line dump normally goes
to the same load host that down-line loaded the server software.
If
that host is
not available, the dump is directed to any available load host on the network.
It is recommended that you support lLlp-line dumping by setting DUMP to its
default, ENABLED.
If
you enter DISABLED, up-line dumping is not
performed.
You should inform the system managers for the load hosts if you change the
DUMP characteristic.
SOFTWARE
When you initialize the server, the software load image is down-line loaded. The
server sends a message to a load host that identifies the requested image. .
The default file name for SOFTWARE is MS160lENG.SYS. Normally you do
not modify this file name. However, if you and a host system manager wish to
load a different software load image, specify its file name with the
SOFTWARE characteristic. The directory for the new file name remains the
system load default directory.
CHAPTER 2 SETTING UP THE MUXserver 100 AND ITS TERMINALS 11