Cisco Wireless LAN Controller System Message Guide
System Message Overview
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System Message Overview

Table Of Contents

System Message Overview

System Message Structure

System Message Example

Searching for System Messages in Online Documentation

System Message Overview

This publication lists and describes system messages for Cisco Wireless LAN Controllers. The system software sends these messages to the console during operation. Not all system messages indicate problems with your system. Some messages are purely informational, while others might help to diagnose problems with communications lines, internal hardware, or the system software.

This chapter contains the following sections:

System Message Structure

System Message Example

Searching for System Messages in Online Documentation

System Message Structure

System messages are structured as follows:



The facility code consists of two or more uppercase letters that indicate the facility to which the message refers. The facility code is preceded by a % sign.

A facility can be a device, a protocol, or a module of the system software. Examples of facility codes are %BCAST (messages that are related to broadcasting) and %LWAPP (messages that are related to the Lightweight Access Point Protocol).


The severity level is a single-digit code from 0 to 7 that reflects the severity of the condition. The lower the number, the more serious the situation. Table 1-1 lists the message severity levels.

Table 1-1 Message Severity Levels 

Severity Level

0 - emergency

System is unusable

1 - alert

Immediate action required

2 - critical

Critical condition

3 - error

Error condition

4 - warning

Warning condition

5 - notification

Normal but significant condition

6 - informational

Informational message only

7 - debugging

Message that appears during debugging only


The MNEMONIC code uniquely identifies the message.

Message text

Message text is a text string that describes the condition. The text string sometimes contains detailed information about the event, including terminal port numbers, network addresses, or addresses that correspond to locations in the system memory address space. Because variable fields change from message to message, they are represented here by short strings enclosed in square brackets ([ ]). A decimal number, for example, is represented as [dec]. Table 1-2 lists the variable fields in messages.

Table 1-2 Representation of Variable Fields in Messages

Type of Information

[chars] or [char]

Character string




Hexadecimal integer





System Message Example

The following is an example of a system message:

%BCAST-3-UNSUPPORTED_MSG_TYPE: Received unsupported message (type = [dec])

%BCAST is the facility code.

3 is the severity level.

UNSUPPORTED_MSG_TYPE is the mnemonic code.

Received unsupported message (type = [dec]) is the message text.

Searching for System Messages in Online Documentation

To search for a message in the online documentation, copy and paste the message that appears on the console or in the system log into the search function of your browser. Copy and paste these portions of the message: