Hardware support
Loop-back paths for frame traffic are provided in the hardware for diagnostic
purposes. You can use a loop-back path within the ASIC, at the final stages of the
Fibre Channel interface, to verify that the internal Fibre Channel port logic is
functioning properly, as well as paths between the interface and the central memory.
Additionally, the SerialLink macro within the ASIC includes a serial data loop-back
function that can be enabled through a register in the corresponding ASIC.
Diagnostics are provided to allow traffic to be circulated between two switch ports
that are connected with an external cable. This allows the diagnostics to verify the
integrity of the final stage of the SERDES interface, as well as the media interface
module.
Diagnostic coverage
The POST and diagnostic commands concentrate on the Fibre Channel ports and
verify switch functionality of the 2109 Model F16 switch. For more information, see
the
Brocade Diagnostic and System Error Message Reference.
Chapter 1. Introduction
13
Summary of Contents for F16
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