Fc-Al Features; Initialization; Table 5-3 End Of Frame Delimiters - Sun Microsystems storagetek sl500 Reference Manual

FC-AL Features

Because the running disparity within a frame is variable, two different EOF
delimiters are used (see
following the transmission of the CRC (see

TABLE 5-3 End of Frame Delimiters

Delimiter
EOF Normal
EOF Terminate
EOF Abort
EOF Normal Invalid
FC-AL Features
Initialization and other processes take on special attributes and functions in an
arbitrated loop topology. The following sections explain these attributes and
functions as specified in the Fibre Channel Arbitrated Loop (FC-AL) specification.

Initialization

Arbitrated loop initialization protocol assigns up to a possible 126 addresses to
different ports on the loop and builds a map of these addresses. The following
sections describe some loop initialization features that StorageTek libraries
perform.
Loop initialization must occur before operations on the loop can begin. The Loop
Initialization Primitive (LIP) sequence is a series of initialization frames that
establish NL_Ports on the loop.
Any NL_Port on the loop is capable of starting an initialization sequence by
transmitting LIP. When the next NL_Port detects the LIP sequence, it retransmits it
to the next NL_Port until the LIP sequence travels around the loop to the NL_Port
initiating the sequence. During loop initialization, NL_Port addresses (AL_PA) are
assigned (00h to EFh).
NL_Port addresses (AL_PA) can be either hard (hardware assigned) or soft (system
assigned) during loop initialization.
46 SL500: Interface Reference Manual • July 2008
TABLE
Abbreviation RD
EOFn Neg.
Pos.
EOFt Neg.
Pos.
EOFa Neg.
Pos.
EOFni Neg.
Pos.
5-3), depending on the content of the frame
"CRC" on page
Transmission Word Characters
K28.5 D21.4
K28.5 D21.5
K28.5 D21.4
K28.5 D21.5
K28.5 D21.4
K28.5 D21.5
K28.5 D10.4
K28.5 D10.5
64).
D21.6 D21.6
D21.6 D21.6
D21.3 D12.3
D21.3 D21.3
D21.7 D21.7
D21.7 D21.7
D21.6 D21.6
D21.6 D21.6
Revision: F • 96122