Table Of Contents
System Message Overview
How to Read System Messages
Error Message Traceback Reports
System Message Overview
This guide describes system messages for the Catalyst 2950 switch. During operation, the system software sends these messages to the console (and, optionally, to a logging server on another system). Not all system messages indicate problems with your system. Some messages are purely informational, whereas others can help diagnose problems with communications lines, internal hardware, or the system software. This guide also includes error messages that appear when the system fails.
This chapter contains these sections:
•
How to Read System Messages
•Error Message Traceback Reports
How to Read System Messages
System messages begin with a percent sign (%) and are structured as follows:
%FACILITY-SEVERITY-MNEMONIC: Message-text
•FACILITY is a code consisting of two or more uppercase letters that show the facility to which the message refers. A facility can be a hardware device, a protocol, or a module of the system software. Table 1-1 lists the system facility codes.
•SEVERITY 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 1-2 lists the message severity levels.
•MNEMONIC is a code that uniquely identifies the message.
Table 1-2 Message Severity Levels
Severity Level
|
Description
|
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.
|
•Message-text is a text string describing the condition. This portion of the message 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 the information in these variable fields changes from message to message, it is represented here by short strings enclosed in square brackets ([ ]). A decimal number, for example, is represented as [dec]. Table 1-3 lists the variable fields in messages.
Table 1-3 Representation of Variable Fields in Messages
Representation
|
Type of Information
|
[dec]
|
Decimal integer
|
[char]
|
Single character
|
[chars]
|
Character string
|
[enet]
|
Ethernet address (for example, 0000.FEED.00C0)
|
[hex]
|
Hexadecimal integer
|
[inet]
|
Internet address
|
This is a sample system message:
%EC-5-UNBUNDLE:Interface Gi0/9 left the port-channel Po2
The messages in "Message and Recovery Procedures," are described in alphabetical order by facility code with the most severe (lowest number) errors described first.
Error Message Traceback Reports
Some messages describe internal errors and contain traceback information. This information is very important and should be included when you report a problem to your technical support representative.
This sample message includes traceback information:
-Process= "Exec", level= 0, pid= 17
-Traceback= 1A82 1AB4 6378 A072 1054 1860
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