User guide

set tcpip
Chapter 2 Command Descriptions 215
ip_ttl=hops
Sets the initial value of the IP time-to-live variable, which defines the
maximum number of hops that a packet can survive before being
discarded. The default is 64.
keepalive_active={on|off}
Enables or disables the keep-alive function.
on
Enables the keep-alive function.
off
Disables the keep-alive function.
The default is "off." However, the keep-alive function can be turned on by
an application regardless of this setting. When you change this setting,
you must reboot the device server.
keepalive_byte={on|off}
Specifies whether the device server sends a “garbage” byte of data,
known as a keep-alive byte, to force the device at the other end of the
connection to respond to the keep-alive packet.
on
The device server sends a keep-alive byte of data.
off
The device server does not send a keep-alive byte of data.
The default is "off." When you change this setting, you must reboot the
device server.
keepalive_idle=hours:minutes:seconds
Determines the period a TCP connection has to be idle before the
keep-alive option is activated. The range is 10 seconds to 24 hours. The
default is 2 hours.
probe_count=probe count#
The number of times TCP probes the other connection to determine if it
is alive after the keep-alive option has been activated. The valid range for
"probe_count" is 5-30. The default is 10.
Digi recommends that the "probe_count" default not be changed unless
there is a good reason to change it. Changing the value can adversely
affect Telnet connections.
probe_interval=probe interval#
The time in seconds between each keep-alive probe. The range is 10-75
seconds. The default is 75 seconds.
Digi recommends that the “probe_interval” default value not be changed
unless there is a good reason. Changing the value can adversely affect
Telnet connections.