Tracing Global Routing Protocol Operations

Global routing protocol tracing operations track all general routing operations and record them in a log file. To set protocol-specific tracing operations and to modify the global tracing operations for an individual protocol, configure tracing for that protocol.

For a general discussion about tracing and the precedence of multiple tracing operations, see the Junos System Basics Configuration Guide.

To configure global routing protocol tracing, include the traceoptions statement at the [edit routing-options] hierarchy level:

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

Using the traceoptions statement, you can specify the following global routing protocol tracing flags:

all—All tracing operations
condition-manager—Condition manager events
config-internal—Configuration internals
general—All normal operations and routing table changes (a combination of the normal and route trace operations)
graceful-restart—Graceful restart operations
normal—All normal operations
nsr-synchronization—Nonstop-routing synchronization events
parse—Configuration parsing
policy—Policy operations and actions
regex-parse—Regular-expression parsing
route—Routing table changes
state—State transitions
task—Interface transactions and processing
timer—Timer usage

Note: Use the trace flag all with caution. This flag may cause the CPU to become very busy.

The flags in a traceoptions flag statement are identifiers. When you use the set command to configure a flag, any flags that might already be set are not modified. In the following example, setting the timer tracing flag has no effect on the already configured task flag. Use the delete command to delete a particular flag.

[edit routing-options traceoptions]user@host# showflag task;user@host# set traceoptions flag timeruser@host# showflag task;flag timer;user@host# delete traceoptions flag taskuser@host# showflag timer;

Examples: Tracing Global Routing Protocol Operations

Log all globally traceable operations, saving the output in up to 10 files that are up to 10 MB in size:

[edit]routing-options {traceoptions {file routing size 10m files 10;flag all;}}

Log all unusual or abnormal traceable operations:

[edit]routing-options {traceoptions {file routing size 10m files 10;flag all;flag normal disable;}}

Log changes that occur in the Junos OS routing table:

[edit]routing-options {traceoptions {file routing size 10m files 10;flag route;}}