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show isis spf

Syntax

show isis spf (brief | log | results)

Description

Display information about shortest-path-first (SPF) calculations.

Options

brief--Display an overview of SPF calculations.

log--Display the log of SPF calculations.

results--Display the results of SPF calculations.

Required Privilege Level

view

Sample Output

Sample Output: show isis spf brief
Sample Output: show isis spf log
Sample Output: show isis spf results

Options at a Glance

Table 36 summarizes which information is included in each of the show isis spf command options. In this table, output fields are listed in alphabetical order. In the Output Fields section, the output fields are listed in the order in which they are displayed.

Table 36: Show ISIS SPF Interface Output Field Summary
Options
Field Description
Log
Count--Number of times the SPF was triggered before the SPF computation was performed.
Log
Elapsed time (secs)--Length of time required to complete the SPF computation.
Brief Results
Interface--Interface of the next hop.
Brief Results
Metric--Metric to the node.
Brief Results
Node--Sysid of a node.
Log
Reason--Reason that the SPF computation was completed.
Brief Results
SNPA--Subnet point of attachment (MAC address of the next hop).
Log
Start time--Time that the SPF computation started.
Brief Results
Via--Sysid of the next hop.

 

Output Fields

Node--Sysid of a node.

Metric--Metric to the node.

Interface--Interface of the next hop.

Via--Sysid of the next hop.

SNPA--Subnet point of attachment (MAC address of the next hop).

Start time--(Log output only) Time that the SPF computation started.

Elapsed time (secs)--(Log output only) Length of time required to complete the SPF computation.

Count--(Log output only) Number of times the SPF was triggered before the SPF computation was performed.

Reason--(Log output only) Reason that the SPF computation was completed.

Sample Output: show isis spf brief 
 user@host> show isis spf brief 
 IS-IS level 1 SPF results:
 
 IS-IS level 2 SPF results:
 Node                  Metric Interface Via                SNPA
 badlands.00               23 so-1/2/0.0 1921.6800.5067
                              so-1/0/0.0 1921.6800.5067
                              so-1/1/0.0 1921.6800.5067
                              so-1/3/0.0 1921.6800.5067
 carlsbad.00               13 so-1/2/0.0 1921.6800.5067
                              so-1/0/0.0 1921.6800.5067
                              so-1/1/0.0 1921.6800.5067
                              so-1/3/0.0 1921.6800.5067
 1921.6800.5064.00         13 so-1/2/0.0 1921.6800.5067
                              so-1/0/0.0 1921.6800.5067
                              so-1/1/0.0 1921.6800.5067
                              so-1/3/0.0 1921.6800.5067
 1921.6800.5067.00         10 so-1/2/0.0 1921.6800.5067
                              so-1/0/0.0 1921.6800.5067
                              so-1/1/0.0 1921.6800.5067
                              so-1/3/0.0 1921.6800.5067
 1921.6800.5066.00         10 so-2/2/0.0 1921.6800.5066
                              so-2/0/0.0 1921.6800.5066
                              so-2/1/0.0 1921.6800.5066
                              so-2/3/0.0 1921.6800.5066
   5 nodes
Sample Output: show isis spf log 
 user@host> show isis spf log 
 IS-IS level 1 SPF log:
 Start time          Elapsed time (secs) Count Reason
 Fri Aug 14 18:52:32            0.000427     1 Reconfig
 Fri Aug 14 18:52:39            0.000493     1 Updated LSP
 Fri Aug 14 19:05:05            0.000463     1 Periodic SPF
 Fri Aug 14 19:18:47            0.000475     1 Periodic SPF
 Fri Aug 14 19:31:11            0.000461     1 Periodic SPF
 ...
 
 IS-IS level 2 SPF log:
 Start time          Elapsed time (secs) Count Reason
 Fri Aug 14 20:46:12            0.001272     1 Updated LSP
 Fri Aug 14 21:03:46            0.001256     1 Updated LSP
 Fri Aug 14 21:05:36            0.001108     1 Reconfig
 Fri Aug 14 21:19:07            0.001808     1 Lost adjacency
 Fri Aug 14 21:19:30            0.001416     1 Updated LSP
 Fri Aug 14 21:30:52            0.001390     1 Periodic SPF
 ...
Sample Output: show isis spf results 
 user@host> show isis spf results 
 IS-IS level 1 SPF results:
 
 IS-IS level 2 SPF results:
 Node                  Metric Interface Via                SNPA
 badlands.00               23 so-1/2/0.0 1921.6800.5067
                              so-1/0/0.0 1921.6800.5067
                              so-1/1/0.0 1921.6800.5067
                              so-1/3/0.0 1921.6800.5067
                           23 10.255.245.46/32
                           33 10.101.1.12/30
                           33 10.101.1.8/30
                           33 10.101.1.4/30
                           63 10.20.1.4/32
                           63 10.20.1.3/32
                           63 10.20.1.2/32
                           63 10.20.1.1/32
 ...


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