Protocol errors during login.

[Michael Morrison <mmorrison@istor.com>]

Howdy folks,

The following paragraphs both mention 'protocol errors' while doing text
negotiations.  

Section 5.2 states:
The constants "None", "Reject", "Irrelevant", and "NotUnderstood" are
reserved and MUST ONLY be used as described here. Violation of this rule
is a protocol error (in particular the use of "Reject", "Irrelevant",
and "NotUnderstood" as proposed values).


Section 5.3 states:
"Any given Login request or response belongs to a specific stage; this
determines the negotiation keys allowed with the request or response. It
is considered to be a protocol error to send a key not allowed in the
current stage."



It's not clear to me how "protocol error" status is communicated back to
the initiator. What Status-Class and Status-Detail values are
appropriate for a Login Response PDU to indicate "protocol error"?



Thanks

Mike