Sun Oracle Storage Tek T10000, Reference Manual

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Sequence Management
38 T10000: Interface Reference Manual • January 2011 • E20425-01
Exchange Responder
The exchange responders assign unique RX_ID values or use the value of
“FFFF.” The exchange responder considers an exchange open from the time it
receives the first frame of the first information unit until one of the following
occurs:
• The last frame of the last information unit is sent with the last sequence bit
set
• The exchange is aborted (ABTS)
• A Logout (LOGO) is sent to, or received from, the Exchange originator
• An LS_RJT is sent in response to an ADISC or PDISC during target
discovery
• A PLOGI is received
■
Sequence Management
Sequence management deals with the actual order and transfer of frames
across Fibre Channel. The SEQ_ID and SEQ_CNT identify the order of
frames for reassembly at the responder.
Refer to the FC–PH documents for rules and guidelines pertaining to Class 2
operation.
Table 22. Sequence Content Header
Word Byte 0 Byte 1 Byte 2 Byte 3
0 R_CTL Destination_ID
1 CS_CTL Source_ID
2 Type F_CTL
3 SEQ_ID DF_CTL SEQ_CNT
4 OX_ID RX_ID
5 Parameter