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Serial Port Profiles
Advanced Tab Field Descriptions
Configure the following parameters:
Authenticate User Enables/disables login/password authentication for users connecting from the
network.
Default: Disabled
Enable TCP
Keepalive
Enables a per-connection TCP keepalive feature. After the configured number
of seconds, the connection will send a gratuitous ACK to the network peer,
thus either ensuring the connection stays active OR causing a dropped
connection condition to be recognized.
This parameter needs to be used in conjunction with
Monitor Connection
Status Interval
parameter found in the Serial, Advanced, Advanced Settings
tab. The interval determines how long the IOLAN will wait during inactivity
before "testing" the connection. It should be noted that if a network connection
is accidentally dropped, it can take as long as the specified interval before
anyone can reconnect to the serial port.
Default: Disabled
Enable Message of
the Day (MOTD)
Enables/disables the display of the message of the day.
Default: Disabled
Enable Data
Logging
When enabled, serial data will be buffered if the TCP connection is lost. When
the TCP connection is re-established, the buffered serial data will be sent to its
destination. The minimum data buffer size for all models is 1 KB. The
maximum data buffer is 2000 KB for the DS1/TS2/STS8D, all other models
are 4000 KB. If the data buffer is filled, incoming serial data will overwrite the
oldest data.
Note: A kill line or a reboot of the IOLAN causes all buffered data to be
lost
Values: 1-2000 KB (DS1/TS2/STS8D) - default is 4 KB
Values: 1-4000 KB (all other models) - default is 256 KB
Some profile features are not compatible with Data Logging. See Data
Logging for the complete list.
To change the default buffer size see Advanced Serial Settings Tab.