FC-2 Features
60 SL500: Interface Reference Manual • July 2008 Revision: F • 96122
Responses to Link Services
TABLE 5-12 summarizes the response the libraries generate when receiving
different Link Service requests when the library NL_Port is not currently logged in
with the sending NL_Port.
TABLE 5-12 Response to Link Services from NL_Ports Not Logged-In
Frame
Received NL_Port Not Logged In NL_Port Logged In Notes
ABTS Discard and send LOGO BA_ACC, BA_RJT 2
ADISC Discard and send LOGO ACC and LS_RJT 1
FAN Process the ELS request,
no response required
Process the ELS request,
no response required.
LOGO ACC ACC
PDISC Discard and send LOGO ACC and LS_RJT 1
PLOGI ACC, LS_RJT ACC
PRLI Discard and send LOGO ACC
PRLO Discard and send LOGO ACC and LS_RJT 3
RSCN Process the ELS request, no
response required.
Process the ELS request,
no response required.
Other Link
Services
Discard and send LOGO ACC and LS_RJT
Notes:
1. All three identifiers must match at login for Accepts (ACC) to be returned:
■ N_Port ID,
■ Port Name, and
■ Node Name
If all three identifiers do not match, return a logout (LOGO).
If other conditions prevent execution of the ADISC or PDICS ELS, return a reject (LS_RJT) with the
appropriate reason code.
2. BA_ACC if valid RX_ID else BA_RJT
3. If PRLI has not been successfully completed, set the reason code to “Image Pair Does Not Exist.”
TABLE 5-13 FC-4 Link Services
Command
FC-Tape StorageTek
From
Initiator
Target
Response
From
Target
Initiator
Response
Lib
Orig.
Lib
Resp.
Sequence Retransmission
Request (SRR)
IRP NN
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