When only IP Forwarding — and not OPC UA communication — was activated, the impact on the BMENUA0100 module’s bandwidth were as follows:

IPSec

Confidentiality

Forward

Length frame (Bytes)

Bandwidth (Kbytes/sec)

No

N/A

Forward All

1000

8800

No

N/A

Custom rule

1000

10600

Yes

No

Forward All

1000

3400

Yes

No

Custom rule

1000

4000

Yes

Yes

Forward All

1000

2600

Yes

Yes

Custom rule

1000

2500
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:

  • Only IP Forwarding communication flow is supported, and no OPC UA communication flow is included.

  • IPSec is used (IPSec = Yes) and not used (IPSec = No).

  • Frames are Signed (Confidentiality = No) versus when frames are both Signed & Encrypted (Confidentiality = Yes), and IPSEC is used (in both cases).

  • Custom rules for IP Forwarding are applied versus Forward All.

NOTE: The length of the frames has only a slight impact on global performance.