Hirschmann GREYHOUND GRS1020 - Page 543

Operation diagnosis
13.6
Port event counter
203
UM Config GRS
Release
8.0 09/2019
 EMI
Electromagnetic interference.
 Network extension
The network extension is too great, or too many cascading hubs.
 Collisions, Late Collisions
In full-duplex mode, no incrementation of the port counters for collisions or Late Collisions.
 CRC Error
The device evaluates these errors as non-matching duplex modes in the manual full duplex
mode.
Table 37: Evaluation of non-matching of the duplex mode
No. Automatic
configuration
Current duplex
mode
Detected error
events (≥ 10 after
link up)
Duplex modes Possible causes
1
marked Half duplex None OK
2 marked Half duplex Collisions OK
3 marked Half duplex Late Collisions Duplex problem
detected
Duplex problem,
EMI, network
extension
4 marked Half duplex CRC Error OK EMI
5 marked Full duplex None OK
6 marked Full duplex Collisions OK EMI
7 marked Full duplex Late Collisions OK EMI
8 marked Full duplex CRC Error OK EMI
9 unmarked Half duplex None OK
10 unmarked Half duplex Collisions OK
11 unmarked Half duplex Late Collisions Duplex problem
detected
Duplex problem,
EMI, network
extension
12 unmarked Half duplex CRC Error OK EMI
13 unmarked Full duplex None OK
14 unmarked Full duplex Collisions OK EMI
15 unmarked Full duplex Late Collisions OK EMI
16 unmarked Full duplex CRC Error Duplex problem
detected
Duplex problem,
EMI