Read Link Error Status Block (Rls/Rls_Acc) - Fujitsu MAA3182FC Series Manual

1.7.8

Read Link Error Status Block (RLS/RLS_ACC)

0 1 2 3
Word
<SOF>
Header <R_CTL> <D_ID>
×× ×× ××
0 22
1 Reserve <S_ID>
×× ×× ××
00
2 <TYPE> <F_CTL>
01 29 00 00
<SEQ_CNT>
3 <SEQ_ID>
××
00 00 00
4 <OX_ID> <RX_ID>
×× ××
FF FF
5
00 00 00 00
FC- PH T.79
Payload
0 0F 00 00 00
1 Reserve Port Identifier
00
2
3
4
5
6
<CRC>
<EOF>
FC-PH 21.4.11
The initiator issues RLS to the drive when
0 1 2 3 Byte
requesting the drive for Fibre Channel link error
<SOF>
information. The drive responds with Link Error
<R_CTL> <D_ID>
Status Block by RLS_ACC when the frame of the
×× ×× ××
23
Reserve <S_ID>
received RLS is correct.
×× ×× ××
00
<TYPE> <F_CTL>
01 99 00 00
The payload field of the RLS/RLS_ACC frame is
<SEQ_CNT>
<SEQ_ID>
FF 00 00 00
described below. For the header field, refer to
<OX_ID> <RX_ID>
×× ××
Section 1.7, "Extended Link Service."
FF FF
00 00 00 00
FC- PH T.80
Word xx and byte y of the payload are represented
02 00 00 00
by [PL:Wxx/By].
FC-PH F.83
(1) LS_Command code [PL/W00/B0]
Link Error Status
Block (24Byte)
<CRC>
<EOF>
(2) Port Identifier [PL:W01/B1-3]
FC-PH 21.4.11
(3) Link Error Status Block [PL:W01-06]
C141-E054-02EN
0Fh: Indicates RLS.
02h: Indicates RLS_ACC.
•
The drive responds with LS_RJT(0Bh,
00h) when this field is an unsupported
Link Service code.
Specifies the port of Link Error Status Block
which the drive should respond with.
0: Link Error Status Block concerning the
port which has received RLS.
1: Link Error Status Block concerning Port A.
2: Link Error Status Block concerning Port B.
The drive responds with LS_RJT(03h, 1Fh)
when this field is any value other than the
above.
This field is used by ACC of the drive.
a) Link Failure Count [PL:W01]
The drive counts the number of times when
synchronization is not achieved for a
minimum of R_T_TOV (100ms) and enters
it in this field.
b) Loss of Synchronization Count [PL:W02]
The drive counts the number of times when
loss of synchronization is detected and
enters it in this field.
c) Loss of Signal Count (PL:W03)
The drive does not support this field and
responds with all zeros.
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