Perle Systems Iolan Sds4 Hl Device Server 4030370 User Manual

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Port Buffering
Remote Port Buffers
The Remote Port Buffering feature allows data received from serial ports on the IOLAN to be sent to 
a remote server on the LAN. The remote server, supporting Network File System (NFS), allows 
administrators to capture and analyze data and messages from the serial device connected to the 
IOLAN serial port. 
Remote Port Buffering data can be encrypted or raw and/or time stamped. The data is transmitted to 
an NFS server where a unique remote file is created for each serial port using the configured serial 
port 
Name
 for the file name. If the serial port 
Name
 parameter is left blank, the IOLAN will create 
unique files using the IOLAN’s Ethernet MAC address and serial port number. It is recommended 
that a unique NFS directory and serial port 
Name
 be configured if multiple IOLANs use the same 
NFS host for Remote Port Buffering. 
The filenames will be created on the NFS host with a 
.ENC
 extension to indicate data encrypted files 
or 
.DAT
 for unencrypted files. If the data is encrypted, the Decoder utility application must be run on 
the NFS server to convert the encrypted data to a readable file for administrators to analyze. The 
Decoder Utility can be found on your installation CDROM or on the Perle website (
The data that is sent to the remote buffer file is appended to the end of the file (even through IOLAN 
reboots), so you will want to create a size limit on the file on your remote NFS host, to keep the 
buffer file size from becoming too large for your system.
Field Definitions
Port buffering displays or logs data received on the IOLAN serial port.
Configure the following parameters:
Enable Local 
Buffering
Enables/disables local port buffering on the IOLAN. 
Default: Disabled
View Port Buffering 
String
The string used by a a session connected to a serial port to display the port 
buffer for that particular serial port.
Data Options: Up to an 8 character string. You can specify control 
(unprintable) codes by putting the decimal value in angle brackets < > (for 
example, 
Escape b
 is 
<027>b
). 
Default: ~view