Dynamic
IP/IPX* Address Translation (DIAT)
Dynamic
IP Address Translation (DIAT) and Dynamic IPX* Address Translation
(known as IPX DIAT) are Shiva® proprietary protocols used
with Shiva's AccessPort. DIAT consists of two elements:
Dynamic IP/IPX Address Assignment and Address Translation.
With DIAT, the central site uses only a single IP address
or IPX node to communicate with all users on the Local Area
Network (LAN).
How DIAT Works
Your
LanRover™ AccessPort is shipped with a default IP address
and a default IPX node number. You configure your PC with
an address on the same LAN as the AccessPort. These addresses
are used on the local LAN and can remain unchanged when
using DIAT.
When
you start an application that requires a network connection,
the AccessPort obtains an IP address or IPX network number
from the central site, via Dynamic IP or IPX Address Assignment.
The LanRover™ AccessPort then uses Address Translation to
convert the IP or IPX addresses from the local LAN to the
dynamic IP or IPX address obtained from the central site.
The
AccessPort uses this address to communicate with the central
site. When transmitting traffic from the central site to
the local network, the AccessPort uses Address Translation
to reconvert the IP or IPX addresses to the addresses used
on the local LAN. This dynamic address assignment and address
translation is transparent to the user.
DIAT Example
Here
is an example of how DIAT works in an IP environment.
In this example, the address of the PC is 192.168.169.1
on the local LAN. When the user starts an application that
requires a network connection, the AccessPort calls the
central site and receives a dynamically-assigned IP address
(from a LanRover™ Access Switch). In this example, the assigned
address is 89.0.0.10.
The Shiva® AccessPort then translates the local IP address
of the PC to the dynamically assigned IP address on the
central-site network. The local IP address of the PC is
not seen outside of its own LAN.
Note:
If IPX servers are connected to your local LAN, you cannot
use Dynamic IP/IPX Address Translation. Use a LAN-to-LAN
connection instead.
Benefits
of DIAT
