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Examples: Tracing IS-IS Protocol Traffic

A common configuration traces SPF calculations, LSP calculations, normal protocol operations, and errors in protocol operation:



[edit]
protocols {


isis {


traceoptions {
file isis-log size 1m files 10;
flag spf;
flag lsp;
flag error;
flag normal;
}


}


}

Trace only unusual or abnormal operations to the file routing-log, and trace detailed information about all IS-IS packets to the file isis-log:



[edit]
routing-options {


traceoptions {
file routing-log;
}


}
protocols {


isis {


traceoptions {
file isis-log size 10k files 5;
flag csn detail;
flag hello detail;
flag lsp detail;
flag psn detail;
}


}


}

Perform detailed tracing of mesh-group flooding:



[edit]
protocols {


isis {


traceoptions {
file isis-log;
flag lsp detail;
}


}


}

IS-IS LSP packets that contain errors are discarded by default. To log these errors, specify the error tracing operation:



[edit]
protocols {


isis {


traceoptions {
file isis-log;
flag error;
}


}


}

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