Extreme Networks ExtremeWare XOS Command Reference Manual page 365

Usage Guidelines
Switch configuration and fault information is filtered and saved to target logs, in a memory buffer, and
in NVRAM. Each entry in the log contains the following information:
• Timestamp—records the month and day of the event, along with the time (hours, minutes, seconds,
and hundredths).
• Severity Level—indicates the urgency of a condition reported in the log. Table 11 describes the
severity levels assigned to events.
• Component, Subcomponent, and Condition Name—describes the subsystem in the software that
generates the event. This provides a good indication of where a fault might lie.
• Message—a description of the event occurrence. If the event was caused by a user, the user name is
also provided.
This command displays the messages stored in either the internal memory buffer or in NVRAM. The
messages shown can be limited by specifying a severity level, a time range, or a match expression.
Messages stored in the target have already been filtered as events occurred, and specifying a severity or
match expression on the
If the
messages
Otherwise, the messages stored in the specified target are displayed.
If the keyword is present following the severity value, then only the events at that exact severity
only
are included. Without the
example, severity
only warning.
Messages whose timestamps are equal or later than the starting time and are equal or earlier than the
specified ending time will be shown if they also pass the severity requirements and match expression, if
specified.
If a phrase is specified, the formatted message must match the simple regular expression
match
specified by
A simple regular expression is a string of single characters including the dot character (.), which are
optionally combined with quantifiers and constraints. A dot matches any single character while other
characters match only themselves (case is significant). Quantifiers include the star character (*) that
matches zero or more occurrences of the immediately preceding character or dot. Constraints include
the caret character (^) that matches at the beginning of a message, and the currency character ($) that
matches at the end of a message. Bracket expressions are not supported. There are a number of sources
available on the Internet and in various language references describing the operation of regular
expressions.
If the
chronological
messages are displayed newest to oldest.
Severity Level. The severity levels are
severity levels for extended debugging,
messages, the severity levels are shown by four letter abbreviations. The abbreviated forms are:
• Critical—Crit
• Error—Erro
• Warning—Warn
• Notice—Noti
ExtremeWare XOS 11.0 Command Reference Guide
command can only further limit the messages shown.
show log
keyword is not present, the messages stored in the memory-buffer target are displayed.
keyword, events at that severity or more urgent are displayed. For
only
implies critical, error, or warning, whereas severity
warning
for it to be shown.
match-expression
keyword is specified, messages are shown from oldest to newest; otherwise,
, ,
critical error warning
,
debug-summary debug-verbose
warning only
, , and , plus three
notice info
, and . In log
debug-data
show log
implies
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