HP B-series Embedded Switches Manual do Utilizador descarregar pdf (Página 229)

Troubleshooting

229Fabric OS Procedures Version 3.1.x/4.1.x User Guide

Link Failure

A link failure occurs when a server or storage is connected to a switch, but the link

between the server/storage and the switch does not come up. This prevents the

server/storage from communicating through the switch.

Possible Causes for Link Failure

If the switchshow command and/or the LED lights indicate that the link has

not come up properly, follow the steps for one or more of the areas indicated

below.

A link failure can be caused by one of the following reasons:

■ Switch State, page 229

■ Port’s Physical State, page 230

■ Speed Negotiation Failure, page 230

■ Link Initialization Failure (Loop), page 231

■ Port Has Come Up in a Wrong Mode, page 232

Switch State

1. Enter the switchshow command.

2. Check the switchState entry in the switchshow command output.

3. Use the following list of switch states to determine the next step:

Table 19: SwitchState and Actions to Take

SwitchState Action

Online The state of the switch is ok. Move on to check

the “Port’s Physical State” on page 230.

Offline Enable the switch by entering the switchenable

command.

Testing Wait for the switch to complete its test.

Faulty Check the condition of the switch. Enter the

switchStatusShow and errShow or

errDump commands and identify the

malfunctioning parts. Refer to the

StorageWorks Fabric OS Version 3.1.x/4.1.x

Reference Guide

for more information.

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HP B-series Embedded Switches Manual do Utilizador Página 229