Chapter 50
| IP Routing Commands
Open Shortest Path First (OSPFv2)
– 989 –
◆ If the priority values of the routers bidding to be the designated router or
backup designated router for an area are equal, the router with the highest ID is
elected.
Example
Console(config-router)#router-id 10.1.1.1
Console(config-router)#
Related Commands
router ospf (985)
timers spf This command configures the delay after receiving a topology change and starting
the shortest path first (SPF) calculation, and the hold time between making two
consecutive SPF calculations. Use the no form to restore the default values.
Syntax
timers spf spf-delay spf-holdtime
no timers spf
spf-delay - The delay after receiving a topology change notification and
starting the SPF calculation. (Range: 0-2147483647 seconds)
spf-holdtime - Minimum time between two consecutive SPF calculations.
(Range: 0-2147483647 seconds)
Command Mode
Router Configuration
Default Setting
SPF delay: 5 seconds
SPF holdtime: 10 seconds
Command Usage
◆ Setting the SPF holdtime to 0 means that there is no delay between
consecutive calculations.
◆ Using a low value allows the router to switch to a new path faster, but uses
more CPU processing time.
Example
Console(config-router)#timers spf 20
Console(config-router)#
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