Reference Guide

Intermediate System to Intermediate System (IS-IS) | 905
spf-interval
e
Specify the minimum interval between Shortest Path First (SPF) calculations.
Syntax
spf-interval [level-l | level-2] interval seconds [initial_wait_interval seconds
[second_wait_interval seconds]]
To restore default values, use the no spf-interval [level-l | level-2] interval seconds
[initial_wait_interval seconds [second_wait_interval seconds]] command.
Parameters
Defaults
Defaults as above
Command Modes
ROUTER ISIS (for IPv4)
CONFIGURATION-ROUTER-ISIS-ADDRESS-FAMILY-IPV6 (for IPv6)
Command
History
Usage
Information
This command spf-interval in CONFIG-ROUTER-ISIS-AF-IPV6 mode is used for IPv6
Multi-Topology route computation only. If using single topology mode, use the spf-interval
command in CONFIG-ROUTER-ISIS mode for both IPv4 and IPv6 route computations.
LSP checksum errors received Displays the number of checksum errors LSPs received.
LSP authentication failures Displays the number of LSP authentication failures.
Table 28-3. Command Example Fields (continued)
Item Description
level-l (OPTIONAL) Enter the keyword level-1 to apply the configuration to
Level-1 SPF calculations.
level-2 (OPTIONAL) Enter the keyword level-2 to apply the configuration to
Level-2 SPF calculations.
interval seconds
Enter the maximum number of seconds between SPF calculations.
Range: 0 to 120 seconds
Default: 10 seconds
initial_wait_interval
seconds
(OPTIONAL) Enter the initial wait time, in seconds, before running the first
SPF calculations.
Range: 0 to 120 seconds
Default: 5 second
second_wait_interval
seconds
(OPTIONAL) Enter the wait interval, in seconds, between the first and
second SPF calculations.
Range: 0 to 120 seconds
Default: 5 seconds
Version 8.3.12.0 Introduced on S4810
Version 7.8.1.0 Introduced to support multi-topology ISIS
Version 7.5.1.0 Expanded to support SPF Throttling Enhancement