HP StorageWorks FC Entry Switch 8B 사용자 설명서 - 페이지 15
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Each looplet in a QuickLoop has its own unshared bandwidth and can support transfer rates up
to 200 MB/sec.
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Multiple devices communicate simultaneously between at least 4 separate switch ports, at full
bandwidth within multiple looplets located in the same QuickLoop. These simultaneous
conversations cannot involve overlapping looplets.
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If a looplet error is detected, QuickLoop automatically takes that looplet out of service. If the
error condition is cleared, the looplet is automatically reinstated.
QuickLoop Implementation
QuickLoop is implemented by a combination of hardware and software components, and requires
no actions on the part of the user once it is installed and configured. The hardware components are
responsible for the transport of frames among looplets and across switches, and the software
components are responsible for QuickLoop initialization and error handling.
Terminology
The terms and concepts introduced in this section are fundamental to understanding the use of
QuickLoop mode.
Switch terminology
The following two port types are on host or storage devices, not on switches.
There are 8 or 16 on varying models of switches; certain models constrain the type of port the
switch can support. Each port can be independently configured as one of various types:
QuickLoop User's Guide
N_port
(Node port) An equipment port that is not loop capable. Used to connect the
equipment to the fabric.
NL_port
An equipment port that is loop capable. Used to connect an equipment port to the
fabric in a loop configuration through the FL_Port on a switch.
F_port
A fabric port that is not in loop mode. Able to transmit under fabric protocol, and
interface over links. N_Ports on equipment connect to F_Ports on switches.
FL_port
A fabric port on a switch that is in loop mode. Used to connect loop capable NL_Ports
to the switch in a loop configuration.
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Using QuickLoop
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