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traceoptions (Protocols Layer 2 VPN)


Hierarchy Level


Trace traffic flowing through a Layer 2 VPN.


disable—(Optional) Disable the tracing operation. You can use this option 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 in quotation marks (" ").

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.

  • all—All Layer 2 VPN tracing options

  • connections—Layer 2 connections (events and state changes)

  • error—Error conditions

  • general—General events

  • nlri—Layer 2 advertisements received or sent by means of the BGP

  • normal—Normal events

  • policy—Policy processing

  • route—Routing information

  • state—State transitions

  • task—Routing protocol task processing

  • timer—Routing protocol timer processing

  • topology—Layer 2 VPN topology changes caused by reconfiguration or advertisements received from other PE routers using BGP

flag-modifier—(Optional) Modifier for the tracing flag. You can specify the following modifier:

  • detail—Provide detailed trace information

  • receive—Trace received packets

  • send—Trace transmitted packets

no-world-readable—(Optional) Prevents any user from reading the trace 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 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 kilobytes, xm to specify megabytes, or xg to specify gigabytes

  • Range: 10 KB through the maximum file size supported on your system

  • Default: 1 MB

world-readable—(Optional) Allow any user to read the trace file.

  • Default: The default is no-world-readable.

Required Privilege Level

routing—To view this statement in the configuration.

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

Release Information

Statement introduced before Junos OS Release 7.4.