Issue
What is the impact of the network traffic at the TCP/IP level when running a TAC Vista system?
Product Line
TAC Vista
Environment
Vista Server
Cause
The system architecture of a TAC Vista system consists of two layers: the TCP/IP layer and the field
bus layer. For the TCP/IP layer, the TAC Vista system typically resides on a customer’s intranet. The
field bus is twisted data cable using the LonTalk® protocol at 78 kilobits per second.
Connected to the TCP/IP layer will be the primary workstation (referred to as a server by TAC, but not
by IT professionals), operator workstations, web servers, web clients, IP to LON® gateways (with
routing capability) and in some cases, hardware-based web servers (TAC Xenta™ 511/527).
Resolution
Please download the following PDF document for details: Download
So what is the load on the intranet as a result of a TAC Vista system? It depends on the number of
TAC Vista Servers and the number of TAC Vista workstations that are in use simultaneously.
What is certain is that the individual contributors to intranet bandwidth use are all very small in
comparison to the capacity of a 10 or 100 megabit per second intranet
