Brocade Communications Systems Fabric OS v7.1.0, Troubleshooting Manual

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90 Fabric OS Troubleshooting and Diagnostics Guide
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Diagnostic Port (D_Port)
10
Disabling a port
1. Connect to the switch and log in using an account with admin permissions.
2. Enter the appropriate command based on the current state of the port and on whether it is
necessary to specify a slot number:.
•
To disable a port that is enabled, enter the command portDisable portnumber or
portDisable slotnumber/portnumber .
•
To disable a port that is persistently enabled, enter the command
portCfgPersistentDisable
portnumber or portCfgPersistentDisable
slotnumber/portnumber.
Diagnostic Port (D_Port)
D_Port mode allows you to convert a Fibre Channel port into a diagnostic port for testing link traffic,
electrical loopbacks, and optical loopbacks between a pair of switches, a pair of Access Gateways,
and an Access Gateway and a switch. The ports must use 10G or 16G Brocade-branded SFPs.
Support is also provided for running D_Port tests between a host bus adapter (HBA) and a switch.
The test results that are reported can be very useful in diagnosing a variety of port and link
problems.
Table 19 lists the Brocade products and Fabric OS releases that support D_Port. In addition,
Fabric OS v7.1.0 introduces a variety of testing options and reporting enhancements. For
applicable topologies, see
“Supported topologies” on page 93.
This section presents the following topics:
•
“Understanding D_Port” on page 91
•
“Supported topologies” on page 93
•
“Using D_Port without HBAs” on page 95
•
“Using D_Port with HBAs” on page 97
•
“Controlling testing” on page 100
•
“Example test scenarios and output” on page 100
TABLE 19
Support for D_Port
Product Fabric OS release and later
DCX-8510-4 v7.0.0
DCX-8510-8 v7.0.0
6505 v7.0.1
6510 v7.0.0
6520 v7.1.0