Patton electronics 2120 User Manual page 14

SLIP operation provides a device connected to the Model 2120 serial
interface with LAN connectivity. The Model 2120 and the device con-
nected to the serial interface exchange IP packets where each IP packet
is SLIP encapsulated. The Model 2120 uses proxy ARP to provide the
device connected to the serial interface with a virtual Ethernet connec-
tion. The Model 2120 serial interface IP address must be configured with
the same static IP address as the device connected to the serial inter-
face.
When operating in PPP mode and accessing the Internet through the
Model 2120, the unit can be configured for DNS and/or WINS. These are
client name server options for Internet domain name resolution. When
operating in SLIP mode, the Model 2120 must be configured to obtain
the name server addresses from the SLIP client device.
The Model 2120 features a flexible user database with security for up to
64 users. This enables security access to the Model 2120 serial inter-
face and administrative management of the Model 2120 over the LAN.
Each user is assigned a user name, password and privilege for access-
ing the serial interface (User), administration management features
(Admin), or both. If the Model 2120 is configured for PPP (and PAP
security is enabled), the user may connect from a remote PPP client
through a modem connected to the serial port of the Model 2120 and
receive / transmit data over the LAN.
The Model 2120 uses an integrated FTP (File Transfer Protocol) client to
obtain new program images and communicate with an FTP server. The
FTP client logs onto the FTP server and then can browse and display
files located on the FTP server. The FTP client can also obtain a new
program image (software release) from the FTP server. The program
image is first obtained from the FTP server across the LAN and then
stored in FLASH memory. This enables the Model 2120 to obtain new
functionality both easily and quickly. The latest Model 2120 software
release is available for download via upgrades.patton.com.
The Model 2120 features integrated utility features to perform a variety of
functions. These include utilities to activate new software images (acti-
vateimage), remotely boot the Model 2120 over the LAN (boot), remotely
close the connection to the Model 2120 serial interface (eiaonclose), test
connectivity with another IP device (ping), establish a Telnet session with
another IP device with Telnet/TCP support (telnet), establish a Raw-TCP
session with another IP device with TCP support (rawtcp), and display
the Model 2120 ARP Table (za).
Last, the Model 2120 features the ability to view any or all configuration
parameter settings and operational status of the Model 2120 unit.
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