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traceoptions (Next Gen Services Service-Set Flow)

Syntax

Hierarchy Level

Description

Configure flow tracing options for a service-set.

Options

file

Configure the trace file options.

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. By default, the name of the file is the name of the process being traced.

files number

Maximum number of trace files. When a trace file named trace-file reaches its maximum size, it is renamed to trace-file.0, then trace-file.1, and so on, until the maximum number of trace files is reached. The oldest archived file is overwritten.

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

  • Range: 2 through 1000 files

  • Default: 10 files

match regular-expression

Refine the output to include lines that contain the regular expression.

size maximum-file-size

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 and a filename.

Syntax: x K to specify KB, x m to specify MB, or x g to specify GB

  • Range: 0 KB through 1 GB

  • Default: 128 KB

world-readable | no-world-readable

By default, log files can be accessed only by the user who configures the tracing operation. The world-readable option enables any user to read the file. To explicitly set the default behavior, use the no-world-readable option.

flag

Trace operation to perform. To specify more than one trace operation, include multiple flag statements.

all

Trace with all flags enabled

basic-datapath

Trace basic packet flow activity

fragmentation

Trace IP fragmentation and reassembly events

high-availability

Trace flow high-availability information

host-traffic

Trace flow host traffic information

multicast

Trace multicast flow information

route

Trace route lookup information

session

Trace session creation and deletion events

session-scan

Trace session scan information

tcp-basic

Trace TCP packet flow information

tunnel

Trace tunnel information

no-remote-trace

Set remote tracing as disabled.

packet-filter filter-name

Packet filter to enable during the tracing operation. Configure the filtering options.

destination-port port-identifier

Match TCP/UDP destination port

destination-prefix address

Destination IP address prefix

interface interface-name

Logical interface

protocol protocol-identifier

Match IP protocol type

source-port port-identifier

Match TCP/UDP source port

source-prefix address

Source IP address prefix

rate-limit messages-per-second

Limit the incoming rate of trace messages.

trace-level

Set the level for trace logging. This option is available only when the flag is set.

brief

Trace key flow information, such as message types sent between SPU and central point, policy match, and packet drop reasons.

detail

Trace extensive flow information, such as detailed information about sessions and fragments. Detail is the default level.

error

Trace error information, such as system failure, unknown message type, and packet drop.

Required Privilege Level

trace—To view this in the configuration.

trace-control—To add this to the configuration.

Release Information

Statement introduced in Junos OS Release 20.3R1.