Reference Guide

406 Brocade Fabric OS Command Reference

53-1004112-02

historyMode

Displays the mode of the field replaceable unit (FRU) history log.

Synopsis historymode

Description Use this command to display the mode of the history buffer, which records the insertion and removal of FRUs on

a switch or chassis.

This command supports two modes of handling new log entries once the history buffer has reached its maximum

size:

Rotating mode

Any new entry exceeding the maximum buffer size overwrites the oldest entry in the log.

This is the default mode.

First-in mode

Any new entry exceeding the maximum buffer size is discarded. The original entries in the

buffer is preserved.

The history mode is a factory setting that cannot be modified. The size of the history buffer depends on the

hardware platform. The Brocade DCX backbone supports a maximum log size of 50 entries. Because the WWNs

are completely separate FRUs in the DCX, they have redundant data in these units. All other platforms containing

FRUs support 28 history log entries.

Notes The execution of this command is subject to Virtual Fabric restrictions that may be in place. Refer to "Using Fabric

OS Commands" and "Command Availability" for details.

Operands None

Examples To display the mode of the history log:

switch:admin> historymode

History Mode is: Rotating.