Black Box LES301A-KIT Manuel d'utilisateur télécharger pdf (Page 12)

724-746-5500 | blackbox.com

Page 12

Linux Virtual COM user manual

724-746-5500 | blackbox.com

Using TTYredirector

trconfig -tty dev -rts r

trconfig -y dev -T r

r — 0 or 1, the state to set when the TTY is opened

C. Flow control

trconfig -tty dev -inflow i

trconfig -y dev -I i

i — Input flow control: rts, dtr, xonxoff, none

trconfig -tty dev -outflow o

trconfig -y dev -O o

o — Input flow control: cts, dsr, xonxoff, none

4. General Options

The general options affect all TTYredirector TTY devices.

NOTES:

 •Whenusinggeneraloptions,donotspecifyTTYredirectorTTYdevices.

 •Single-letterformsofoptionnamesappearonalinefollowingthelongform.

 •Optionnamescanbeshortenedaslongastheyarenotambiguous.

 •Unlessotherwisenoted,theseoptionscanbecombinedinanyorderinasinglecommand.

 •Forthestatusvaluesreturnedbytrconfig,seetheTechnicalNotes.

A. The client/server network connection

trconfig -nagle Y|N

trconfig -g Y|N

Controls use of the Nagle algorithm, which coalesces data into fewer network packets. In some applications, latency

needs to be improved (at the expense of somewhat higher network loading) by disabling the Nagle algorithm to use

more frequent packets that each hold less data. For more information, see the Technical Notes.

Default setting: Y

trconfig -keepalive n

trconfig -k n

n — The number of milliseconds between keep-alive transmissions. A value of at least 1000 is recommended.

Default setting: 60000 (60 seconds).

If the device server supports Telnet protocol with RFC 2217 extensions, TTYredirector can use a keep-alive message

method to detect a failed connection to the server. This option controls the interval at which TTYredirector will issue the

keep-alive message if no activity has occurred on the connection. For more information, see the Technical Notes.

trconfig -timeout n

n — The number of milliseconds the daemon will wait for an answer to a keep-alive message before the connection to

the server is considered a failed connection. A value of at least 1000 is recommended.

Default setting: 30000 (30 seconds).

See the description of the keepalive option above for additional information.

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Pas de commentaire

Black Box LES301A-KIT Manuel d'utilisateur Page 12