Supported Platforms
traceoptions (Protocols Router Discovery)
Syntax
Hierarchy Level
Release Information
Statement introduced before Junos OS Release 7.4.
Description
Configure ICMP protocol-level tracing options.
To specify more than one tracing operation, include multiple flag statements.
Default
The default ICMP protocol-level tracing options are inherited from the routing protocols traceoptions statement included at the [edit routing-options] hierarchy level.
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 within quotation marks. All files are placed in the directory /var/log. We recommend that you place ICMP tracing output in the file icmp-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 also must specify a maximum file size with the size option.
Range: 2 through 1000 files
Default: 2 files
flag flag—Tracing operation to perform. To specify more than one tracing operation, include multiple flag statements. These are the ICMP-specific tracing options:
- error—Errored ICMP packets
- info—ICMP information packets
- packets—All packets
- router-discovery—All ICMP packets
- redirect—ICMP redirect packets
These 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
- send—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), megabytes (MB), or gigabytes (GB). 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 also must 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.
Required Privilege Level
routing and trace—To view this statement in the configuration.
routing-control and trace-control—To add this statement to the configuration.
