Port Settings

Since release of the BLUEPIRAT 2 Mainboard 2 and BLUEPIRAT Mini, there is a possibility to configure the behavior of ethernet ports on the back of the device.

Settings of the rear ports – BLUEPIRAT Mini

In BLUEPIRAT Mini there’s a feature implemented called Port forwarding which works like a Tap mode but additionally allows to log high level protocols like GNLog, DLT, TCP, etc. which have to send requests to the ECU.

Port forwarding can only be activated together for both rear ports.

Port settings of the rear ports – BLUEPIRAT 2 5E

Port mode Switch

For Logging of high-level protocols (GNLog, DLT, TCP etc.) over Ethernet, as well as Camera and XCP over Ethernet, use the Port Mode Switch.

The ports, which are configured as Switch are ready for operation, after the logger has started up. In default mode, all ports are configured as Switch. In this mode it is not possible to change the speed like at Spy mode. It is set to 100 Mbit/s.

The ports can communicate with each other. Incomming messages will be forwarded by a rout-ing table to the correspondend port. This routing table is created by using the SRC MAC of the incoming messages with relevant port numbers.

In Switch mode, the Spy Logging can be activated separate for every port to log all incomming messages.

Port mode Spy

In Spy mode the Ethernet data are recorded on the Data Link Layer (→ OSI layer 2). This re-cording mode is independent of the protocol used (TCP, IP, UDP, etc. → OSI layer 3/4).

Ports which are configured as Spy just listen on the line and log all transferred messages.

Port mode Tap

In Tap mode the Ethernet data are recorded on the Data Link Layer (→ OSI layer 2). This re-cording mode is independent of the protocol used (TCP, IP, UDP etc. → OSI layer 3/4).

The Tap mode has the same functionality as two Spy ports and additional routes all incoming data from one port to another (in both directions). This routing is also optimized for low latency.

The data logger is in this way integrated into the line and receives all incoming and outgoing data. But only the incoming data will be recorded.

This routing is also optimized for low latency.

Notes

As the behavior of the ports can be configured flexibly, the port configuration must be considered while plugging the cables. Look out which cable is connected to which port.

A port, which is configured as Spy or Tap, cannot be used for high-level protocols. In the other way round, a port, which is configured as switch, could do a spy logging if the firmware of your logger supports it.

Please note that the described functionality is possibly not available for your logger variant.