HP StorageWorks 2/8-EL quickloop fabric assist version 3.0.x user guide - Page 29

Table 1: Configuration Access Methods, Error Handling, Switch Level Errors

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Using Quick Loop Table 1 lists the methods that the hosts in this example would use to communicate with the targets. Table 1: Configuration Access Methods a b Fabric1 (standard translative) mode Fabric1 (standard translative) mode No Access2 PLDA No Access QuickLoop mode c Fabric1 (standard translative) mode QuickLoop mode QuickLoop mode d Fabric1 (standard translative) mode QuickLoop mode QuickLoop mode e Fabric1 (standard translative) mode QuickLoop mode QuickLoop mode f Fabric (FLA) No Access2 No Access 1. A public host accesses a device on Compaq QuickLoop by translative mode (phantom), in the same way it accesses a private device attached to an FL_Port. 2. Devices connected to Compaq QuickLoop lose their public functions. FLOGIs sent by these devices are dropped, forcing them back to a private loop attachment. Error Handling QuickLoop isolates faulty switches or ports by excluding them from the initialization process. This minimizes of the impact of a faulty looplet or switch on normal QuickLoop operations, and is particularly important for QuickLoops that contain multiple looplets distributed across two switches. Switch Level Errors Switch level errors affect dual-switch QuickLoops, and include the following conditions: ■ No switch with the configured partner switch's WWN can be found in the fabric. ■ No response is received from the partner switch during the initial handshake. ■ Inconsistent responses are received from the partner switch. ■ Responses are not received in time during QuickLoop initialization. Quickloop Fabric Assist User Guide 29

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Using Quick Loop
29
Quickloop Fabric Assist User Guide
Table 1 lists the methods that the hosts in this example would use to communicate
with the targets.
Error Handling
QuickLoop isolates faulty switches or ports by excluding them from the
initialization process. This minimizes of the impact of a faulty looplet or switch
on normal QuickLoop operations, and is particularly important for QuickLoops
that contain multiple looplets distributed across two switches.
Switch Level Errors
Switch level errors affect dual-switch QuickLoops, and include the following
conditions:
■
No switch with the configured partner switch’s WWN can be found in the
fabric.
■
No response is received from the partner switch during the initial handshake.
■
Inconsistent responses are received from the partner switch.
■
Responses are not received in time during QuickLoop initialization.
Table 1:
Configuration Access Methods
a
b
c
d
e
f
Fabric
1
(standard
translative)
mode
1.
A public host accesses a device on Compaq QuickLoop by translative mode (phantom),
in the same way it accesses a private device attached to an FL_Port.
Fabric
1
(standard
translative)
mode
Fabric
1
(standard
translative)
mode
Fabric
1
(standard
translative)
mode
Fabric
1
(standard
translative)
mode
Fabric
(FLA)
No Access
2
PLDA
QuickLoop
mode
QuickLoop
mode
QuickLoop
mode
No
Access
2
2.
Devices connected to Compaq QuickLoop lose their public functions. FLOGIs sent by
these devices are dropped, forcing them back to a private loop attachment.
No Access
QuickLoop
mode
QuickLoop
mode
QuickLoop
mode
QuickLoop
mode
No
Access