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4
Command Line Interface
Related Commands
ip route (4-251)
redistribute (4-272)
timers spf
This command configures the hold time between making two consecutive shortest
path first (SPF) calculations. Use the no form to restore the default value.
Syntax
timers spf spf-holdtime
no timers spf
spf-holdtime - Minimum time between two consecutive SPF calculations.
(Range: 0-65535 seconds)
Command Mode
Router Configuration
Default Setting
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)#
area range
This command summarizes the routes advertised by an Area Border Router (ABR).
Use the no form to disable this function.
Syntax
[no] area area-id range ip-address netmask [advertise | not-advertise]
• area-id - Identifies an area for which the routes are summarized.
(The area ID must be in the form of an IP address.)
• ip-address - Base address for the routes to summarize.
• netmask - Network mask for the summary route.
• advertise - Advertises the specified address range.
• not-advertise - The summary is not sent, and the routes remain hidden
from the rest of the network.
Command Mode
Router Configuration
4-270
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