Hirschmann MACH 4000 Reference Manual

Switching
92
4.1 Switching Global
RM Web
Release 6.0 07/2010
X Collisions, late collisions: In full-duplex mode, the port does not count
collisions or late collisions.
X CRC error: The device only evaluates these errors as duplex problems in
the manual full duplex mode.
No. Autonegotiati
on
Current
duplex
mode
Detected error
events (≥ 10)
Evaluation of
duplex
situation by
device
Possible causes
1 On Half duplex None OK
2 On Half duplex Collisions OK
3 On Half duplex Late collisions Duplex problem
detected
Duplex problem, EMI,
network extension
4 On Half duplex CRC error OK EMI
5 On Full duplex None OK
6 On Full duplex Collisions OK EMI
7 On Full duplex Late collisions OK EMI
8 On Full duplex CRC error OK EMI
9 Off Half duplex None OK
10 Off Half duplex Collisions OK
11 Off Half duplex Late collisions Duplex problem
detected
Duplex problem, EMI,
network extension
12 Off Half duplex CRC error OK EMI
13 Off Full duplex None OK
14 Off Full duplex Collisions OK EMI
15 Off Full duplex Late collisions OK EMI
16 Off Full duplex CRC error Duplex problem
detected
Duplex problem, EMI
Table 31: Evaluation of non-matching of the duplex mode

Hirschmann MACH 4000 Specifications

General

Brand	Hirschmann
Model	MACH 4000
Category	Network Router
Language	English