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Interpretation #12
Request
IEEE Std. 802.1ag-2007

Topic: Loopback response error reporting

SUBSECTION: 20.31.1 ProcessLBR()

It seems that once any LBR with the incorrect LTID is received, then every LBR received after that will be considered
to have an incorrect LTID, until LBIactive becomes false. This is because in action c)2), the received Loopback
Transaction Identifier is copied to expectedLBRtransID, but expectedLBRtransID is not incremented after that.

It is possible that that was the intended behavior, that all subsequent LBRs are considered incorrect after one
incorrect LBR is received.  However, it is also possible that it was intended for expectedLBRtransID to track the
new LTID, so that the first LBR is considered incorrect but subsequent ones are considered correct.

Can you clarify what was intended in ProcessLBR()? Is it as written, or was there a typo in the standard? 
(e.g., was intended to say "2) The value from the received Loopback Transaction Identifier field is copied into
expecedLBRtransID, then expectedLBRtransID and the number of incorrect LBRs received [item z) in 12.14.7.1.3]
is incremented by 1.
Response
(Response not yet available)

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Last modified by jlm, at 2:10pm on Tue, 17 Nov 2009