disable—(Optional) Disable the tracing operation. You can use this option is to disable a single operation when you have defined a broad group of tracing operations, such as all.
file name—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. We recommend that you place BGP tracing output in the file bgp-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.
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Note: If you specify a maximum number of files, you must also specify a maximum file size with the size option. |
- Range: 2 through 1000 files
- Default: 10 files
flag—Tracing operation to perform. To specify more than one tracing operation, include multiple flag statements.
BGP Tracing Flags
- 4byte-as—4-byte AS events
- as-path—AS path regular expression operations.
- damping—Damping operations.
- keepalive—BGP keepalive messages.
- open—Open packets. These packets are sent between peers when they are establishing a connection.
- packets—All BGP protocol packets.
- update—Update packets. These packets provide routing updates to BGP systems.
Global Tracing Flags
- all—All tracing operations.
- general—A combination of the normal and route trace operations.
- normal—All normal operations.
- Default: If you do not specify this option, only unusual or abnormal operations are traced.
- policy—Policy operations and actions.
- route—Routing table changes.
- state—State transitions.
- task—Interface transactions and processing.
- timer—Timer usage.
flag-modifier—(Optional) Modifier for the tracing flag. You can specify one or more of these modifiers:
- detail—Provide detailed trace information.
- filter—Filter trace information. Applies only for route and damping tracing flags.
- receive—Packets being received.
- send—Packets being transmitted.
no-world-readable—(Optional) Prevent any user from reading the log 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 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.
- Syntax: xk to specify KB, xm to specify MB, or xg to specify GB
- Range: 10 KB through the maximum file size supported on your system
- Default: 128 KB
world-readable—(Optional) Allow any user to read the log file.
