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

General Information

21Edge Switch 2/24 Service Manual

Maintenance Approach

Whenever possible, the maintenance approach instructs service personnel to

perform fault isolation and repair procedures without degrading or interrupting

operation of the switch, attached devices, or associated applications.

Switch fault isolation begins when one or more of the following occur:

■ System event information displays at the attached HAFM appliance, a remote

workstation communicating with the HAFM appliance, or the Embedded

Web Server (EWS) interface.

■ LEDs on the switch front panel or FRUs illuminate to indicate a hardware

malfunction.

■ An unsolicited SNMP trap message is received at a management workstation,

indicating an operational state change or failure.

■ Notification of a significant system event is received at a designated support

center through an e-mail message or the call-home feature.

System events can be related to one of the following:

■ Switch or HAFM appliance failure (hardware or software).

■ Ethernet LAN communication failure between the switch and HAFM

appliance.

■ Link failure between a port and attached device.

■ ISL failure or segmentation of an E_Port.

Fault isolation and service procedures vary depending on the system event

information provided. Fault isolation and related service information are provided

through maintenance analysis procedures (MAPs) documented in Chapter 3.

MAPs consist of step-by-step procedures that prompt service personnel for

information or describe a specific action to be performed.

MAPs provide information to interpret system event information, isolate a switch

failure to a single FRU, remove and replace the failed FRU, and verify switch

operation. The fault isolation process normally begins with “MAP 0000: Start

MAP” on page 32.

Before using these procedures, ensure the correct switch is selected for service (if

the HAFM appliance manages multiple switches or other High Availability Fabric

Directors and Edge Switches) by enabling unit beaconing at the failed switch. The

amber system error LED on the switch front panel blinks when beaconing is

enabled. Instructions to enable beaconing are incorporated into MAP steps.