traceoptions

Syntax

Hierarchy Level

Release Information

Statement introduced before JUNOS Release 7.4.

Description

Specify router advertisement protocol-level tracing options.

Default

The default trace options are inherited from the global traceoptions statement.

Options

disable—(Optional) Disable the tracing operation. One use of this option is to disable a single operation when you have defined a broad group of tracing operations, such as all.

file filename—Name of the file to receive the output of the tracing operation. Enclose the name in quotation marks. We recommend that you place router advertisement tracing output in the file /var/log/router-advertisement-log.

files number—(Optional) Maximum number of trace files. When a trace file named trace-file reaches its maximum size, it is renamed trace-file.0, then trace-file.1, and so on, until the maximum number of trace files is reached. Then, the oldest trace file is overwritten.

If you specify a maximum number of files, you must also specify a maximum file size with the size option.

Range: 2 through 1000 files

Default: 1 trace file only

flag flag—Tracing operation to perform. To specify more than one tracing operation, include multiple flag statements. The following are the router advertisement–specific tracing options:

• error—Router advertisement errors

• expiration—Router advertisement route expiration processing

• holddown—Router advertisement hold-down processing

• packets—All router advertisement packets

• request—Router advertisement information packets such as request, poll, and poll entry packets

• trigger—Router advertisement triggered updates

• update—Router advertisement update packets

The following are the global tracing options:

• all—All tracing operations

• general—A combination of the normal and route trace operations

• normal—All normal operations.

Default: If you do not specify this option, only unusual or abnormal operations are traced.

• policy—Policy operations and actions

• route—Routing table changes

• state—State transitions

• task—Interface transactions and processing

• timer—Timer usage

flag-modifier—(Optional) Modifier for the tracing flag. You can specify one or more of these modifiers:

• detail—Provide detailed trace information

• receive—Packets being received

• receive-detail—Provide detailed trace information for packets being received

• send—Packets being transmitted

• send-detail—Provide detailed trace information for packets being transmitted

no-world-readable—(Optional) Prevent any user from reading the log file.

size size—(Optional) Maximum size of each trace file, in kilobytes (KB) or megabytes (MB). When a trace file named trace-file reaches this size, it is renamed trace-file.0. When the trace-file again reaches its maximum size, trace-file.0 is renamed trace-file.1 and trace-file is renamed trace-file.0. This renaming scheme continues until the maximum number of trace files is reached. Then, the oldest trace file is overwritten.

If you specify a maximum file size, you must also specify a maximum number of trace files with the files option.

Syntax: xk to specify KB, xm to specify MB, or xg to specify GB

Range: 10 KB through the maximum file size supported on your system

Default: 1 MB

world-readable—(Optional) Allow any user to read the log file.

Usage Guidelines

See Tracing Router Advertisement Traffic.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

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