Guralp Systems CMG-DCM build <10,000 - Manual (Page 215)

Acquisition Modules and Platinum Firmware Building Networks
Server tab
Bind host: If the acquisition module has multiple IP addresses, the GSTM
server can be constrained to listen on only one of them by entering its address
in the field. If this field is left empty, the server will listen on all available IP
addresses.
“Bind host” Enter the service name or port number on which you want the
server instance to listen. If you are configuring multiple server instances,
each needs a unique service/port. The service name to port number mapping
is stored in the standard Linux file /etc/services, which can be edited
from the command line.
TCP keepalive: The server is capable of generating TCP keep-alive packets in
order to defeat any automatic “disconnect on idle” mechanisms which may be
present on the link. Tick the check-box to enable this feature.
Watchdog interval: Like the GSTM client, the GSTM server also generates
watchdog packets to monitor for link failure. These may also be more
effective at maintaining a link than TCP keep-alives because some network
devices automatically block and/or spoof keep-alive packets. Watchdog
packets are sent after a certain amount of time when the link appears to be
idle and at regular intervals thereafter until traffic is detected. This time
interval can be configured by entering an integer value, in seconds, in the
field.
MAN-EAM-0003 215 Issue E - February 2014