Appendix A Test Results
Summary results
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HST-3000 Ethernet Testing User’s Guide
Bit Errors A count of the number of received bits in a
recognized pattern that do not match the
expected value.
Errored Frames A count of FCS errored frames, runts, and
jabbers.
FCS Errored
Frames
A count of Ethernet frames containing
Frame Check Sequence (FCS) errors.
When receiving Ethernet jumbo frames
containing FCS errors, the FCS error
count does not increment. Instead, these
frames are counted as Jabbers.
For Ethernet ping applications, the FCS
Errored Frames result is the only result
displayed in the Errors category. The
other results in the Errors category are not
applicable.
IP Checksum
Errors
A count of received IP packets with a
checksum error in the header.
IP Packet Length
Errors
A count of received IP packets that
exceed the available Ethernet payload.
Jabbers A count of received Ethernet frames that
have a byte value greater than the maxi-
mum 1518 frame length (or 1522 bytes for
VLAN tagged frames) and an errored
FCS.
L2 Patt Sync The data contained inside the frame pay-
load is synchronized with a BERT pattern.
This result is only applicable when the
HST is configured for layer 2 testing.
L4 Checksum
Errors
A count of received packets with a check-
sum error in the TCP/UDP header.
Link Active Indicates whether the link is active.
Loss of Link Indicates the link has become inactive
since starting the test.
Table 15 Summary results (Continued)
Result Definition
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