An IP Service Level Agreement (SLA) operation is repeated every 60 seconds if a frequency is not configured. IP SLA operations are a suite of tools on Cisco devices that enable an administrator to analyze and troubleshoot IP networks. For example, the following command set configures IP SLA to regularly test and verify
the reachability of IP address 10.10.10.2:

ip sla 1 icmp-echo 10.10.10.2 threshold 2 timeout 1000 frequency 3 ip sla schedule 1 life forever start-time now


To change how often an IP SLA operation is repeated, you should issue the frequency command from an IP SLA configuration submode. The variable for the frequency command is specified in seconds? therefore, the frequency 3 command specifies that the operation should repeat every three seconds. The frequency 60 command has the same effect as the default frequency of 60 seconds.