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traceoptions (Protocols OSPF)

Syntax

Hierarchy Level

Description

Configure OSPF protocol-level tracing options.

To specify more than one tracing operation, include multiple flag statements.

Note:

The traceoptions statement is not supported on QFabric systems.

Default

The default OSPF protocol-level tracing options are those inherited from the routing protocols traceoptions statement included at the [edit routing-options] hierarchy level.

Options

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 within quotation marks. All files are placed in the directory /var/log. We recommend that you place OSPF tracing output in the file ospf-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.

  • Range: 2 through 1000 files

  • Default: 10 files

flag flag—Tracing operation to perform. To specify more than one tracing operation, include multiple flag statements.

OSPF Tracing Flags

  • database-description—Database description packets, which are used in synchronizing the OSPF and OSPFv3 topological database.

  • error—OSPF and OSPFv3 error packets.

  • event—OSPF and OSPFv3 state transitions.

  • flooding—Link-state flooding packets.

  • graceful-restart—Graceful-restart events.

  • hello—Hello packets, which are used to establish neighbor adjacencies and to determine whether neighbors are reachable.

  • ldp-synchronization—Synchronization events between OSPF and LDP.

  • lsa-ack—Link-state acknowledgment packets, which are used in synchronizing the OSPF topological database.

  • lsa-analysis—Link-state analysis. Specific to the Juniper Networks implementation of OSPF, Junos OS performs LSA analysis before running the shortest-path-first (SPF) algorithm. LSA analysis helps to speed the calculations performed by the SPF algorithm.

  • lsa-request—Link-state request packets, which are used in synchronizing the OSPF topological database.

  • lsa-update—Link-state updates packets, which are used in synchronizing the OSPF topological database.

  • nsr-synchronization—Nonstop routing synchronization events.

  • on-demand—Trace demand circuit extensions.

  • packet-dump—Content of selected packet types.

  • packets—All OSPF packets.

  • restart-signaling—(OSPFv2 only) Restart-signaling graceful restart events.

  • spf—Shortest-path-first (SPF) calculations.

Global Tracing Flags

  • all—All tracing operations.

  • general—A combination of the normal and route trace operations.

  • normal—All normal operations. 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—Routing protocol task processing.

  • timer—Routing protocol timer processing.

flag-modifier—(Optional) Modifier for the tracing flag. You can specify one or more of these modifiers:

  • detail—Detailed trace information.

  • 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.

Required Privilege Level

routing and trace—To view this statement in the configuration.

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

Release Information

Statement introduced before Junos OS Release 7.4.

Support for the realm statement introduced in Junos OS Release 9.2.

Support for the realm statement introduced in Junos OS Release 9.2 for EX Series switches.