Brocade Troubleshooting and Diagnostics Guide v6.1.0 (53-1000853-01, June 2008)

76 Fabric OS Troubleshooting and Diagnostics Guide

53-1000853-01

FTRACE concepts

Displaying port mirror connections

1. Log in to the switch as admin.

2. Type portMirror

--show

You should see output similar to the following:

switch:admin> portmirror --show

Number of mirror connection(s) configured: 4

Mirror_Port SID DID State

----------------------------------------

18 0x070400 0x0718e2 Enabled

18 0x070400 0x0718e3 Enabled

18 0x070400 0x0718ef Enabled

18 0x070400 0x0718e0 Enabled

FTRACE concepts

FTRACE is a support tool that can be used in a manner similar to that of a channel protocol

analyzer. FTRACE enables troubleshooting of problems using a Telnet session rather than sending

an analyzer or technical support personnel to the site. FTRACE record events that occur on the FC

interface, including user defined messages and events. FTRACE includes the ability to freeze

traces on certain events, and to retain the trace information for future examination.

Tracing Fibre Channel information

Frame trace (FTRACE) records user-defined messages and events on the Brocade FR4-18i and the

7500. The portCfg command uses the ftrace option to capture trace information on a per FCIP

tunnel basis. You can configure up to eight FCIP tunnels on a single physical GE port. FTRACE is

subject to the same FCIP tunnel limitations, such as tunnel disruption, port of switch disable or

enable, and reboot requirements.

Tracing every FICON event affects performance. To avoid this, the default trace mask is set to

0x80000C7b. The mask is a filter where a bit specifies which frames and events will be captured

and displayed. For troubleshooting, you should set the trace mask to 0-0xFFFFFFFF. The following

table describes the configurable FTRACE parameters.

TABLE 15 FTRACE configurable parameters

Parameter Default Range Syntax

Auto check Out False T/F Boolean

Buffers 0 0-8 Integer

Display Mask 0xFFFF FFFF 0-0xFFFFFFFF Integer

Enable False T/F Boolean

Post Percentage 5 0-100 Integer

Trace Mask 0x8000 0-0xFFFFFFFF Integer

Trigger Mask 0x00000003 0-0xFFFFFFFF Integer