24 Service Manual (AA-RTDXC-TE, July 2004)

Diagnostics

99Edge Switch 2/24 Service Manual

■ Link failure - loss of signal or loss of

synchronization

■ Link failure - not-operational primitive sequence

(NOS) received

■ Link failure - primitive sequence timeout

■ Link failure - invalid primitive sequence received

for the current link state

Did one of the listed messages appear in the Link Incident Log?

YES NO

↓ The switch appears operational. Exit MAP.

Go to step 34.

As indicated by a message or event code 507, a Fibre Channel port failed an

internal or external loopback test.

1. Reset each port that failed the loopback test.

a. At the Hardware View, right-click the port. A pop-up menu appears.

b. Click Reset Port. A This operation will cause a link

reset to be sent to the attached device message

displays.

c. Click OK. The port resets.

2. Perform an external loopback test for all ports that were reset. Refer to

“Perform Loopback Tests” on page 160.

Did resetting ports solve the problem?

NO YES

↓ The switch appears operational. Exit MAP.

A switch port is unblocked and receiving the offline sequence (OLS) or not

operational sequence (NOS) from an attached device.

Inform the customer that the attached device failed or is set offline, and to take the

appropriate corrective action. Exit MAP.