Software-Based Tap; Figure 3: Niot-E-Tib100-Gb-Re - Passive Mode As Software Tap - hilscher NIOT-E-TIB100-GB-RE User Manual

Passive process data acquisition with the Edge Gateway
2.2.1

Software-based TAP

Edge Gateway NIOT-E-TIB100-GB-RE | Passive Operating Mode
DOC180202UM01EN | Revision 1 | English | 2018-04 | Released | Public
This section describes the simplest application scenario of the Edge
Gateway, namely its use as a purely software-based TAP without use of
any additional devices.The following picture explains its principle of
operation.
Figure 3: NIOT-E-TIB100-GB-RE - Passive mode as software TAP
The advantages of this application scenario are:
1. SimplicityThis application scenario offers minimum effort in circuit
design .
2. No additional devices required.
In order to analyze the data traffic between IT and OT network, no
additional devices are necessary.
3. Small delay in time of communication in OT network („Fieldbus"). The
delay in time of the Ethernet frames caused by the software TAP
amounts less than 1 µs. Thus this scenario is suited for non-time-critical
applications where a delay in time of such an amount is tolerable.
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