Dell Brocade 6520 Fabric OS Troubleshooting and Diagnostics Guide v7.1.0 - Page 52

Testing a port’s external transmit and receive path, Testing a switch’s internal components

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3 Segmented fabrics Testing a port's external transmit and receive path 1. Connect to the switch and log in as admin. 2. Connect the port you want to test to any other switch port with the cable you want to test. 3. Enter the portLoopbackTest -lb_mode 2 command. Testing a switch's internal components 1. Connect to the switch and log in as admin. 2. Connect the port you want to test to any other switch port with the cable you want to test. 3. Enter the portLoopbackTest -lb_mode 5 command where 5 is the operand that causes the test to run on the internal switch components (this is a partial list-refer to the Fabric OS Command Reference for additional command information): [-nframes count]-Specify the number of frames to send. [-lb_mode mode]-Select the loopback point for the test. [-spd_mode mode]-Select the speed mode for the test. [-ports itemlist]-Specify a list of user ports to test. Testing components to and from the HBA 1. Connect to the switch and log in as admin. 2. Enter the portTest command (refer to the Fabric OS Command Reference for information on the command options). See Table 7 on page 36 for a list of additional tests that can be used to determine the switch components that are not functioning properly. Refer to the Fabric OS Command Reference for additional command information. The HBA's bcu fcDiag --linkbeacon command can be used to beacon a target port on the switch. For more information on using this command, refer to the Brocade Adapters Administrator's Guide. TABLE 7 Test Switch component tests Function portBeacon portLoopbackTest turboRamTest Sets port beaconing mode. Performs a functional test of port N to N path. Verifies the functional components of the switch. Verifies that the on chip SRAM located in the 4 and 8 Gbps ASIC is using the Turbo-Ram BIST circuitry. This allows the BIST controller to perform the SRAM write and read operations at a much faster rate. Segmented fabrics Fabric segmentation is generally caused by one of the following conditions: • Incompatible fabric parameters (see "Reconciling fabric parameters individually" on page 37). 36 Fabric OS Troubleshooting and Diagnostics Guide 53-1002751-01

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36
Fabric OS Troubleshooting and Diagnostics Guide
53-1002751-01
Segmented fabrics
3
Testing a port’s external transmit and receive path
1.
Connect to the switch and log in as admin.
2.
Connect the port you want to test to any other switch port with the cable you want to test.
3.
Enter the
portLoopbackTest -lb_mode 2
command.
Testing a switch’s internal components
1.
Connect to the switch and log in as admin.
2.
Connect the port you want to test to any other switch port with the cable you want to test.
3.
Enter the
portLoopbackTest -lb_mode 5
command where
5
is the operand that causes the test
to run on the internal switch components (this is a partial list—refer to the
Fabric OS Command
Reference
for additional command information):
[
-nframes
count
]—Specify the number of frames to send.
[
-lb_mode
mode
]—Select the loopback point for the test.
[
-spd_mode
mode
]—Select the speed mode for the test.
[
-ports
itemlist
]—Specify a list of user ports to test.
Testing components to and from the HBA
1.
Connect to the switch and log in as admin.
2.
Enter the
portTest
command (refer to the
Fabric OS Command Reference
for information on
the command options).
See
Table 7
on page 36 for a list of additional tests that can be used to determine the switch
components that are not functioning properly. Refer to the
Fabric OS Command Reference
for
additional command information.
The HBA's
bcu fcDiag
--
linkbeacon
command can be used to beacon a target port on the switch.
For more information on using this command, refer to the
Brocade Adapters Administrator’s Guide
.
Segmented fabrics
Fabric segmentation is generally caused by one of the following conditions:
•
Incompatible fabric parameters (see
“Reconciling fabric parameters individually”
on page 37).
TABLE 7
Switch component tests
Test
Function
portBeacon
Sets port beaconing mode.
portLoopbackTest
Performs a functional test of port N to N path. Verifies the functional components of the
switch.
turboRamTest
Verifies that the on chip SRAM located in the 4 and 8 Gbps ASIC is using the Turbo-Ram BIST
circuitry. This allows the BIST controller to perform the SRAM write and read operations at a
much faster rate.