MVID 29h - Report Soft Error

Destination Address: C0-00-00-00-00-08 (Ring Error Monitor)

Destination Class: 6 (Ring Error Monitor)

Source Class: 0 (ring station)

Subvectors: SVID 02h - NAUN

SVID 0Bh - Physical Drop Number

SVID 2Dh - Isolating Error Count

SVID 2Eh - Non-Isolating Error Count

This frame is used to report soft error events to the ring error monitor (REM).

Soft errors are supposed not to be caused by hardware errors. If a soft error is detected (by any station), a report is sent to the ring error monitor's functional address.

Isolating errors can be located because they are reported by the next downstream station. Non-isolating errors cannot be located in the same way. (It isn't easy to unterstand that the 'receive congestion' error is classified as non-isolating because this error report frame is sent by the adapter that has congestion!)

Isolating Error Counts / SVID=2Dh

Octet 0 Line Error (count)

Octet 1 Internal Error (count)

Octet 2 Burst Error (count)

Octet 3 A/C Error (count)

Octet 4 Abort Delimiter (count)

Octet 5 (reserved) (count)

Non-Isolating Error Counts / SVID=2Eh

Octet 0 Lost Frame Error (count)

Octet 1 Receive Conjestion (count)

Octet 2 Frame Copied Error (count)

Octet 3 Frequence Error (count)

Octet 4 Token Error (count)

Octet 5 (reserved) (count)