# traceoptions (Extended DHCP Local Server)

#### Syntax

``` traceoptions { file filename <files number> <size size> <world-readable | no-world-readable> <match regex>; flag flag; } ```

#### Hierarchy Level

``` [edit logical-systems logical-system-name routing-instances routing-instance-name system services dhcp-local-server], [edit logical-systems logical-system-name system services dhcp-local-server], [edit routing-instances routing-instance-name system services dhcp-local-server], [edit system services dhcp-local-server] ```

#### Release Information

Statement introduced in JUNOS Release 9.0.

#### Description

Define tracing operations for DHCP processes.

#### 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.

Range: 2 through 1000
Default: 3 files

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

• all—Trace all operations.
• auth—Trace authentication operations.
• database—Trace database events.
• fwd—Trace firewall process events.
• general—Trace miscellaneous events.
• ha—Trace high availability-related events.
• interface—Trace interface operations.
• io—Trace I/O operations.
• packet—Trace packet decoding operations.
• packet-option—Trace DHCP option decoding operations.
• rpd—Trace routing protocol process events.
• rtsock—Trace routing socket operations.
• session-db—Trace session database operations.
• state—Trace changes in state.
• ui—Trace user interface operations.

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

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.

Syntax: xk to specify KB, xm to specify MB, or xg to specify GB
Range: 10 KB through 1 GB
Default: 128 KB