Link statistics are generated when a link is closed or when one of the following counters is about to wrap. Whenever a link statistics message is built, all the counters are reset to 0.
The NMVT generated has the following format:
NMVT Header | |
41 03 8D 00 00 00 00 00 | NMVT Header |
Major Vector Header | |
00 32 | Length of major vector |
00 25 | Link Statistics major vector |
Data Link Traffic Counters Subvector | |
2E9A | Data Link Traffic Counters subvector |
04 | DLC type: token ring |
01 or 02 | Statistics type: link counter overflow or adapter counter overflow |
Token Ring Adapter Log Information and Counters | |
hh | Adapter number (01+04) |
00 | Reserved |
hh | Line error |
hh | Internal error |
hh | Burst error |
hh | ARI/FCI error |
hh | End delimiter |
00 | Reserved |
hh | Lost frame |
hh | Receive congestion |
hh | Frame copied error |
hh | Frequency error |
hh | Token error |
00 00 00 | Reserved |
DLC SAP Station Information | |
hh hh hh hh | Count of frames transmitted OK |
hh hh hh hh | Count of frames received OK |
hh hh hh hh | Count of frames discarded |
hh hh hh hh | Lost data |
hh hh | Buffer available in SAP |
DLC Link Station Information | |
hh hh | Count of I-frames transmitted |
hh hh | Count of I-frames received |
hh | Received I-frames error count |
hh | Transmitted I-frames error count |
hh hh | T1 timer expired count |