Anritsu Mainframe MU909060A Series, Operation Manual, Page: 122 / 190

Chapter 3 Application Ethernet
The Network Master can generate two types of alarms and 10 types of
errors and violations.
Alarms:
Item Description
No Link
Turns off current port to simulate link
loss
Remote Fault
Signals remote fault to link partner
during auto negotiation
Errors and Violations:
Item Description
IFG
Detects Inter Frame Gap violation when
two received frames are too close
The standard minimum IFG is 12 bytes.
FCS
Inserts frames with wrong Frame Check
Sequence (FCS)
Preamble
Inserts Preamble 1 byte shorter than
standard 8 bytes
PAUSE frames
Used as Ethernet flow control method by
sending Pause frames to stop transmitter
for defined time
IP Checksum
Generate frames with wrong IP header
checksum
Fragmented IP
Generate fragmented frames broken into
smaller frames at IP layer level
This usually happens when frames are
routed through a network.
Layer 4 Checksum
Inserts wrong UDP or TCP header
checksum
Error Symbol
Inserts errored symbol at PHY 10-bit
coding
PRBS Bit Error
Inserts bit error in PRBS payload
BERT Seq. Error
Generates sequence error by changing
sequence numbers of two frames used for
BERT
Note
The PRBS Bit Error and BERT Seq. Error items are only
supported at BER tests.
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