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Catalyst 4500 Series Switch Cisco IOS System Message Guide
OL-13091-01
Chapter 1 System Message Format
Message Structure
MNEMONIC Code
The MNEMONIC code uniquely identifies the error message. All mnemonics are all uppercase character
strings.
Message Text
Message text is a text string that describes the error condition. The text string may contain 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 that are enclosed in square brackets ([ ]).
A decimal number, for example, is represented as [dec]. Table 1-3 lists the variable fields in messages.
Sample System Error Messages
The following is an example of a system error message:
Error Message LINK-2-BADVCALL: Interface [
chars
], undefined entry point
Some error messages also indicate the card and slot reporting the error. These error messages are
structured as follows:
CARD-SEVERITY-MSG:SLOT FACILITY-SEVERITY-MNEMONIC:
Message-text
• CARD is a code that describes the type of card reporting the error.
• MSG is a mnemonic indicating that this is a message. It is always shown as MSG.
• SLOT indicates the slot number of the card reporting the error. It is shown as SLOT followed by a
number (for example, SLOT5).
5 Notification—Normal but significant
condition
6 Informational—Informational message only
7 Debugging—Message that appears during
debugging only
Table 1-2 Message Severity Levels (continued)
Severity Level Description
Table 1-3 Representation of Variable Fields in Messages
Representation Type of Information
[dec] Decimal
[chars] or [char] Character string
[hex] Hexadecimal integer
[num] Number
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