Abnormal connection update request PDU from slave

[Jusang Kim]

20170119_104909.jpg

I'm working with a ble open source. Here i attached the captured abnormal case of the connection update Request PDU from the slave. Please refer to the attached picture. The slave shall not send the connection update request control PDU to master as i know.

Please feel free to tell me what you think about the abnormal case?

[Sigurd]

Hi,

In the direction field you can see that the packet is sent from the master to the slave...( M -> S)

[Jusang Kim]

In the attached figure the packet number 193 is sent from master to slave. Howevrr the packet number 196 must be sent from salve to master. and then because the master has received the connection update request from the slave, it sent the unknown response to slave. Based on the specification, the slave shall not send the connection update request. It Can send only the connection parameter update request by using the L2CAP channel. This is what i curious about. . .