smart-optimize-timer
Syntax
smart-optimize-timer seconds;
Hierarchy Level
[edit logical-systems logical-system-name protocols mpls], [edit protocols mpls]
Description
Enable the smart optimization timer. When you enable the smart optimization timer on a router, the Junos OS operates on the assumption that the original LSP path is preferable to any alternate or secondary path. When you enable the smart optimization timer and an LSP fails and its traffic is switched to an alternate path, the smart optimization timer starts and waits 3 minutes (this time is configurable). After 3 minutes have passed, the LSP is switched back to the original path. If the original path fails again and the LSP is switched to an alternate path again, the router waits 1 hour before attempting to switch the LSP back to its original path.
If you want to disable the smart optimizer, you can set it to
zero. The smart-optimize-timer
value in seconds indicates
the time before which the LSP is switched back to its primary path
in case the primary path becomes available. Otherwise, the time to
wait is controlled by the optimize-timer
, which is usually
set to a high value. Some ISPs have the optimize-timer
set
to once a day. Sometimes after the smart optimizer causes the LSP
to be placed back on its primary path, the primary path goes down
again within 60 minutes. When this happens, the smart-optimize-timer
is disabled automatically, and the optimize-timer
(regular
path optimization) goes into effect. This is to protect against a
flapping link being used.
Default
The smart optimization timer is enabled by default.
Options
seconds
—(Optional)
Specify the number of seconds to wait before switching an LSP
back to its original path. If you do not specify the number of seconds,
the default value is used.
Range: 0 through 65,535 seconds
Default: 180 seconds
Required Privilege Level
routing—To view this statement in the configuration.
routing-control—To add this statement to the configuration.
Release Information
Statement introduced before Junos OS Release 7.4.