M2UA: Messages sequence in case of error

"flash view" <[email protected]>
Newsgroups gmane.ietf.sigtran
Message-ID <[email protected]>
Hello,

RFC3331, 4.3.4.1 ASP Up Procedures says: "If an ASP Up message is received
and internally the remote ASP is in the ASP-ACTIVE state, an ASP Up Ack
message is returned, as well as an Error message ("Unexpected Message), and
the remote ASP state is changed to ASP-INACTIVE in all relevant Application
Servers."

Which message sequence is right?

1)
ASP1   --->  ASP UP                                ---> SG (ASP1 is in the
ASP-ACTIVE)
ASP1   <---  Error(Unexpected message)    <---  SG
ASP1   <---  ASP UP ACK                         <---  SG

2)
ASP1   --->  ASP UP                                ---> SG (ASP1 is in the
ASP-ACTIVE)
ASP1   <---  ASP UP ACK                         <---  SG
ASP1   <---  Error(Unexpected message)    <---  SG

Thank You.

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