As I mentioned last time, L2TPv3 has a plethora of capabilities, including the capability to be used for remote access VPNs, the capability to transport a number of Layer-2 protocols in a pseudowire ...
The PCIe specification has given a specific Link Training and Status State Machine (LTSSM) state named Loopback, which is intended for test and fault isolation use. Basically, it gives a mechanism ...