Mihau
Guest
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 Posted:
Mon Jan 10, 2005 8:01 am Post subject:
Ethernet stats |
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Hi,
1.
According to 802.3 Layer Management when multiple errors are detected in
frame received only one status is retruned to LLC in descending order:
+ frameTooLong
+ alignmentError
+ frameCheckError
+ lengthError
but in RFC 1757 are statistics: etherStatsOversizePkts - packets with frame
too long error and with no other errors. So how can be known that no other
errors are in the frame when only one status is/should be returned and frame
too long is received?
Aren't 802.3 and RFC 1757 in this point just incompatible?
2.
Can anyone give me clear explanation of (from RFC 1643):
"Received frames for
which multiple error conditions obtain are,
according to the conventions of IEEE 802.3
Layer Management, counted exclusively according
to the error status presented to the LLC."
"...counted exclusively.." - does it mean that when alignment error and
length error exist in the same frame only the alignment error counter is
incremented?
thanks
Michal |
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