When both IP Forwarding and OPC UA communication were activated, the impact on the BMENUA0100 module’s bandwidth were as follows:

Number of monitored OPC UA items per subscription

IPSec

Confidentiality

Forward

Bandwidth (Kbytes/sec)

0

No

N/A

Custom rule

10600

0

Yes

No

Custom rule

4000

0

Yes

Yes

Custom rule

2500

20000

No

N/A

Custom rule

8800

20000

Yes

No

Custom rule

2900

20000

Yes

Yes

Custom rule

2000

NOTE: These values are presented only as an example. Use them as an estimation of the impact of different parameters (IPSEC, Confidentiality, etc.) on performance. Actual performance depends of your specific infrastructure.

The impact on bandwidth is displayed when:

  • All packet forwarding is performed via Custom rule (no Forward All).

  • OPC UA communication flows are not included (Number of monitored OPC UA items = 0) and included (= 2000).

NOTE: The number of OPC UA monitored items has little impact.