show isis statistics

Syntax

show isis statistics

Description

Display statistics about IS-IS traffic.

Required Privilege Level

view

See Also

clear isis statistics on page 393

Output Fields

PDU type--Protocol data unit type.

Received--Number of PDUs received since IS-IS started or since the statistics were zeroed.

Processed--Number of PDUs received less the number dropped.

Drops--Number of PDUs dropped.

Sent--Number of PDUs transmitted since IS-IS started or since the statistics were zeroed.

Rexmit--Number of PDUs retransmitted since IS-IS started or since the statistics were zeroed.

Total packets received/sent--Total number of PDUs received and transmitted since IS-IS started or since the statistics were zeroed.

SNP queue length--Number of CSNP and PSNP packets currently sitting on the SNP queue waiting for processing. This value is almost always 0.

LSP queue length--Number of LSPs sitting on the LSP queue waiting for processing. This value is almost always 0.

SPF runs--Number of SPF calculations that have been performed. If this number is incrementing rapidly, it indicates that the network is unstable.

Fragments rebuilt--Number of LSP fragments that the local system has computed.

LSP regenerations--Number of LSPs that have been regenerated. An LSP is regenerated when it is nearing the end of its lifetime and it has not changed.

Purges initiated--Number of purges that the system initiated. A purge is initiated if the software decides that an LSP must be removed from the network.

Sample Output

 user@host> show isis statistics
 IS-IS statistics for merino:
 
 PDU type     Received  Processed      Drops       Sent     Rexmit
 LSP             12227      12227          0       8184        683
 IIH            113808     113808          0     115817          0
 CSNP           198868     198868          0     198934          0
 PSNP             6985       6979          6       8274          0
 Unknown             0          0          0          0          0
 Totals         331888     331882          6     331209        683
 
 Total packets received: 331888 Sent: 331892
 
 SNP queue length:           0 Drops:          0
 LSP queue length:           0 Drops:          0
 
 SPF runs:                1014
 Fragments rebuilt:       1038
 LSP regenerations:        425
 Purges initiated:           0