Perle Systems 5500208-41 User Manual

Page 41

Line Commands

hotkey-prefix

The prefix that a user types to lock a line or redraw the Menu. The default value is

hex

, which corresponds to

Ctrl-a

(

) (hex value 02 would be Ctrl-b (^b), etc.):

^a l

—(Lowercase L) Locks the line until the user unlocks it. The user is prompted

for a password (any password, excluding spaces) and locks the line. Next, the user

must retype the password to unlock the line.

—When you switch from a session back to the Menu, the screen may not be

redrawn correctly. If this happens, use this command to redraw it properly.

You can use the

Hotkey Prefix

key to lock a line only when the

Line

Lock

parameter is

data-loggin

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 (this

option is not available when

Monitor DSR

Monitor DCD

, or

Multihost

is enabled).

The data buffer is 4K for desktop models and 32K for rack mount models. If the data
buffer is filled, incoming serial data will overwrite the oldest data.
The default is

off

idle-timer

Enter a time period, in seconds, for which the

Idle Timer

will run. Use this timer to

close a connection because of inactivity. When the

Idle Timer

expires, the IOLAN will

end the connection. The maximum value is 4294967 seconds (about 49 days). The

default value of

(zero) means the

Idle Timer

will not expire, so the connection is

permanently open.

initial

Specifies the initial interface a user navigates when logging into the line; either the

Menu

or a prompt for the

CLI

. The default is

CLI

initiate-connection

Initiates a Telnet connection to the specified host when any data is received by the serial

port or when the specified character is received by the serial port (direct Telnet only).

internet-address

Used with reverse sessions, users can access serial devices connected to the IOLAN by
the specified Internet Address (or host name that can be resolved by a DNS). You must

reboot the IOLAN for the

Internet Address

to take affect (the kill line option does not

apply to this parameter).

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 server parameter,

monitor-connection-every. 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.

line-name

Provide a name for the line so it can be easily identified.