Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) - Manual (Page 340)

312 Multi-Service IronWare Routing Configuration Guide
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Clearing the IS-IS SPF Log
By using the detail option with the show isis spf-log command, you can display more detail about
the total number of IPv4 and IPv6 route updates and the reason for the first and last SPF events.
Like SPF events, the incremental SPF events are displayed. However, for incremental SPF, only the
first trigger is displayed, as the example below illustrates. In addition, the logging changes include
the number of RTM updates that were carried out in each SPF or incremental SPF run.
To show details about the RTM updates, use the show isis spf-log detail command, as follows.
Syntax: show isis spf-log detail
Clearing the IS-IS SPF Log
You can clear the IS-IS SPF Log accumulated since the last software reload or last clearing of the
SPF Log through use of the following command.
Brocade# isis clear spf-log
Syntax: clear isis spf-log [ level-1 | level-2 ]
When the level-1 or level-2 options are used, only the log for the specified level is cleared. If not
specified, both will be cleared.
Triggering the router to run SPF
You can trigger the router to run the SPF calculations through use of the following command.
Brocade# clear isis spf-trigger
Syntax: clear isis spf-trigger [ level-1 | level-2 ]
ISTCT_SPF Computation The user issued the disable-incremental-stct-spf-opt command.
User Cleared IS-IS All The user issued the clear isis all command.
Interface Config Change ISIS was enabled or disabled on a port.
User Trigger The user issued the clear isis spf-trigger command.
Recompute InterLeve Routes The neighbor IS-type is changed either from L1 to L12 or L12 to L1
Exited Overload State IS-IS exited from an overload condition.
TABLE 50 Trigger types and description (Continued)
Trigger Description
Brocade#show isis spf-log detail
ISIS Level-2 SPF Log
When Duration Nodes Count Last-Trigger-LSP Trigger
2h38m9s 0ms 3 2 XMR14.00-00 Adjacency State Change
Ipv4 Route updates: 4000 Ipv6 Route updates: 0
First Trigger: 2h39m23s loopback 1 State Changed to Up
Last Trigger : 2h38m14s Adjacency 0000.0000.0001 Added
2h41m17s 0ms 26 1 XMR14.00-00 IS Neighbor TLV Change
Ipv4 Route updates: 1 Ipv6 Route updates: 0
First Trigger: 2h41m2s ISPF Run