LonWorks Network limitations in TAC Vista using Loytec NIC852 (Orion Stack)

[Product_Support]

Issue

LNS Network limitations in TAC Vista using Loytec NIC852

Environment

• NIC852
• Orion Stack

Cause

Orion protocol alters the way in which the Vista Server and LNS Server interact and can often provide more efficient communication between the databases.

Resolution

Vista 5.1.1 and prior

1. There is a limit of 8 LNS networks per NIC card.
2. It is recommended to reserve 1 MNI connection for engineering purposes (through LonMaker or NL220), resulting in a recommended limit of 7 LNS networks per NIC card. 
3. There is a limit of 1 NIC card per Vista network.

Vista 5.1.2 and later

1. There is a limit of 8 LNS networks per NIC card. 
2. It is recommended to reserve 1 MNI connection for engineering purposes (through LonMaker or NL220), resulting in a recommended limit of 7 LNS networks per NIC card. 
3. There is a limit of 4 NIC cards per Vista server.  That results in a recommended limitation of 28 LNS databases per Vista server.