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1.7
Extended Link Service
No.
Extended Link Service
01
N_Port Login
02
Logout
03
Process Login
04
Process Logout
05
Read Link Status
06
Reinstate Recovery Qualifier
07
Port Discovery
08
Address Discovery
09
Third-Party Process Logout
10
Accept
11
Link Service Reject
The Extended Link Services supported by this drive are the Link Service Command and its
responses, Accept (ACC) and Link Service Reject (LS_RJT).
The header field of the Extended Link Service is defined below.
Word
0
1
Header
<R_CTL>
0
2x
1
2 <TYPE>
01
3 <SEQ_ID
<DF_CTL>
>
4
<OX_ID>
5
<Parameter>
1 - 32
Table 1.15 Extended Link Data Specification
Symbol
PLOGI
LOGO
PRLI
PRLO
RLS
RRQ
PDISC
ADISC
TPRLO
ACC
LS_RJT
2
3
Byte
<D_ID>
<S_ID>
<F_CTL>
<SEQ_CNT>
<RX_ID>
C141-E054-02EN
The drive can;
receive only
receive or transmit
receive only
receive or transmit
receive only
receive only
receive only
receive only
receive only
transmit if only received Extended Link
transmit if only received Extended Link
Service was illegal or has fails.
(1) R_CTL.. (Routing Control)
The high order four bits (2h) represent
Extended Link Service, and the low order four
bits each Extended Link Service.
(2) D_ID.. (Destination Identifier)
•
Destination address for the frame.
(3) S_ID.. (Source Identifier)
•
Source address for the frame.
(4) Type
The Extended Link Service uses 01h.
(5) F_CTL.. (Frame Control)
•
Set 290000h for the Extended Link Service
Command.
(Originator of Exchange, First Sequence of
Exchange, Last Data Frame of Sequence,
Transfer Sequence Initiative)
•
Set 990000h for a response to the
Extended Link Service Command.
(Responder of Exchange, Last Sequence of
Exchange)
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