Hirschmann RS20 User Manual page 194

Operation Diagnosis
Collisions, late collisions: In full-duplex mode, the port does not count
collisions or late collisions.
CRC error: The device only evaluates these errors as duplex problems
in the manual full duplex mode.
No. Autonegotiati
on
1
On
2
On
3
On
4
On
5
On
6
On
7
On
8
On
9
Off
10
Off
11
Off
12
Off
13
Off
14
Off
15
Off
16
Off
Table 25: Evaluation of non-matching of the duplex mode
Activating the detection
Select the Switching:Global dialog.
Select "Enable duplex mismatch detection". The device then checks
whether the duplex mode of a port might not match that of the
remote port.
If the device detects a potential mismatch, it creates an entry in the
event log and sends an alarm (trap).
enable
configure
194
Current Detected error
duplex events (≥ 10)
mode
Half duplex None
Half duplex Collisions
Half duplex Late collisions
Half duplex CRC error
Full duplex None
Full duplex Collisions
Full duplex Late collisions
Full duplex CRC error
Half duplex None
Half duplex Collisions
Half duplex Late collisions
Half duplex CRC error
Full duplex None
Full duplex Collisions
Full duplex Late collisions
Full duplex CRC error
9.5 Event Counter at Port Level
Evaluation of
duplex
situation by
device
OK
OK
Duplex problem
detected
OK
OK
OK
OK
OK
OK
OK
Duplex problem
detected
OK
OK
OK
OK
Duplex problem
detected
Switch to the Privileged EXEC mode.
Switch to the Configuration mode.
Possible causes
Duplex problem, EMI,
network extension
EMI
EMI
EMI
EMI
Duplex problem, EMI,
network extension
EMI
EMI
EMI
Duplex problem, EMI
Basic Configuration
Release 6.0 07/2010