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interface-traceoptions (System Services DHCP)

Syntax

Hierarchy Level

Description

Configure extended DHCP local server tracing operations that can be enabled on a specific interface or group of interfaces. You use the interface interface-name trace statement at the [edit system services group group-name] hierarchy level to enable the tracing operation on the specific interfaces.

Options

file-name—Name of the file to receive the output of the tracing operation. Enclose the name in quotation marks (“ ”). All files are placed in a file named jdhcpd in the directory /var/log. If you include the file statement, you must specify a filename.

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

  • 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 events

  • dhcpv6-packet—Trace DHCPv6 packet decoding operations.

  • dhcpv6-packet-option—Trace DHCPv6 option decoding operations.

  • dhcpv6-state—Trace changes in state for DHCPv6 operations.

  • packet—Trace packet decoding operations

  • packet-option—Trace DHCP option decoding operations

  • state—Trace changes in state

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

no-remote-trace—Disable remote tracing.

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). 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 1 GB

  • Default: 128 KB

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

Required Privilege Level

interface—To view this statement in the configuration.

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

Release Information

Statement introduced in Junos OS Release 10.4.