Loopporttest - HP StorageWorks 2/64 - Core Switch Command Reference Manual

Hp storageworks fabric os 5.x command reference guide (aa-rvhvb-te, september 2005)
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loopPortTest

Functional test of L_Port M->M path on a loop.
Synopsis
loopporttest [-nframes count][-ports itemlist][-seed
payload_pattern][-width pattern_width]
Availability
admin
Description
Use this command to verify the operation of the switch by sending frames from port M's transmitter and
looping the frames back through an external fiber cable, including all the devices on the loop, into port
M's receiver. This exercises all the switch components, from the main board, to the SFP, to the fiber cable,
to the SFPs (of the devices and the switch), and back to the main board.
The cables and SFPs connected should be of the same technology, meaning that a short wavelength SFPed
(switch) port is connected to another short wavelength SFPed (device) port through a short wavelength
cable; and a long wavelength port is connected to a long wavelength port; and a copper port is
connected to a copper port.
Only one frame is transmitted and received at any one time. The port LEDs flicker green rapidly while the
test is running.
The test method is as follows:
1.
Determine which ports are L_Ports.
2.
Enable ports for cabled loopback mode.
3.
Create a frame F of data size (1024 bytes).
4.
Transmit frame F through port M, with D_ID to the FL_Port (AL_PA = 0).
5.
Pick up the frame from port M, the FL_Port.
6.
Check if any of the eight statistic error counters are nonzero: ENC_in, CRC_err, TruncFrm, FrmTooLong,
BadEOF, Enc_out, BadOrdSet, DiscC3.
7.
Check if the transmit, receive, or class 3 receiver counters are stuck at some value.
8.
Check if the number of frames transmitted is not equal to the number of frames received.
9.
Repeat
step 3
reached or all ports are marked bad.
You can specify a payload pattern to be used when executing this test. If the pattern is not specified, then
at every 30 passes, a different data type is used to generate a new pattern to create the frame. The data
pattern is generated based on each data type. Some data types might generate different data patterns on
every pass. The data types are repeated every 210 pass.
Operands
This command has the following operands:
-nframes count
-ports itemlist
through
step 8
for all ports present until either the number of frames requested is
Specify the number of times (or number of frames per port) to
execute this test. The default value is 10.
Specify a list of user ports to test. By default, all user ports in the
current slot are tested. See
selecting ports.
for more information on
itemList
Fabric OS 5.x command reference guide 331

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