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traceoptions (DHCP Server)

Syntax

Hierarchy Level

Release Information

Statement for tracing J Series Services Router DHCP processes introduced in Junos OS Release 8.0.

Statement introduced in Junos OS Release 9.0 for EX Series switches.

Description

Define tracing operations for DHCP processes for J Series Services Routers and EX Series switches.

Options

file filename—Name of the file that receives the output of the tracing operation. Enclose the name in quotation marks. All files are placed in the directory /var/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 and a filename.

flag flag—Tracing operation to perform. To specify more than one tracing operation, include multiple flag statements. You can include the following flags:

• all—All tracing operations
• binding—Trace binding operations
• config—Log reading of configuration
• conflict—Trace user-detected conflicts for IP addresses
• event—Trace important events
• ifdb—Trace interface database operations
• io— Trace I/O operations
• lease—Trace lease operations
• main—Trace main loop operations
• misc— Trace miscellaneous operations
• packet—Trace DHCP packets
• options—Trace DHCP options
• pool—Trace address pool operations
• protocol—Trace protocol operations
• rtsock—Trace routing socket operations
• scope—Trace scope operations
• signal—Trace DHCP signal operations
• trace—All tracing operations
• ui—Trace user interface operations

match regex—(Optional) Refine the output to include lines that contain the regular expression.

• all—All tracing operations
• binding—Trace binding operations
• config— Log reading of configuration
• conflict—Trace user-detected conflicts for IP addresses
• event—Trace important events
• ifdb— Trace interface database operations
• io—Trace I/O operations
• lease—Trace lease operations
• main—Trace main loop operations
• match regex— Refine the output to include lines that contain the regular expression.
• misc—Trace miscellaneous operations
• packet—Trace DHCP packets
• options—Trace DHCP options
• pool—Trace address pool operations
• protocol—Trace protocol operations
• rtsock—Trace routing socket operations
• scope—Trace scope operations
• signal—Trace DHCP signal operations
• trace—All tracing operations
• ui—Trace user interface operations

no-world-readable—(Optional) Disable unrestricted file access.

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 and filename.

world-readable—(Optional) Enable unrestricted file access.

Required Privilege Level

system—To view this statement in the configuration.

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