MVID 08h - Lobe Media Test

Destination Address: 00-00-00-00-00-00 (all zero)

Destination Class: 0 (ring station)

Source Class: 0 (ring station)

Subvectors: SVID 26h - Wrap Data

New stations that insert into the ring will check the lobe cable by sending a frame that is looped back to the adapter because the MSAU (multi-station access unit) didn't open the station's relais, yet.

If the frame is received unchanged, the test has been passed successfully.