350-001 · Question #88
On a router that is configured with multiple IP SLA probes, which command can be used to manage the CPU load that was created by the periodic probing?
The correct answer is B. ip sla group schedule. The 'ip sla group schedule' command allows multiple IP SLA operations to be scheduled together with a spread interval, distributing probe execution over time to reduce CPU spikes.
Question
On a router that is configured with multiple IP SLA probes, which command can be used to manage the CPU load that was created by the periodic probing?
Options
- Aip sla monitor low-memory
- Bip sla group schedule
- Cip sla reaction-trigger
- Dip sla enable timestamp
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Why each option
The 'ip sla group schedule' command allows multiple IP SLA operations to be scheduled together with a spread interval, distributing probe execution over time to reduce CPU spikes.
'ip sla monitor low-memory' is not a valid Cisco IOS command for managing probe scheduling or CPU load.
When many IP SLA probes fire simultaneously, they create CPU bursts. The 'ip sla group schedule' command lets administrators assign a group of probes to a schedule with a configurable spread parameter, staggering probe start times across a defined window so CPU load is distributed evenly rather than spiking all at once.
'ip sla reaction-trigger' is used to trigger one IP SLA operation based on the state of another, not to manage scheduling or CPU utilization.
'ip sla enable timestamp' enables timestamping on probe packets for latency measurement and has no effect on scheduling or CPU load.
Concept tested: IP SLA group schedule for CPU load distribution
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipsla/configuration/15-mt/sla-15-mt-book/sla_group_schedule.html
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