Use this command to set the rate at which a specified IP Service Level Agreements (SLAs) operation repeats in the ICMP echo configuration sub-mode of IP SLA configuration mode.
| Default | 60 seconds |
| Format | frequency seconds |
| Mode | IP SLA ICMP ECHO Config |
| Parameter | Description |
|---|---|
| seconds | Number of seconds between the IP SLAs operations. Range is 1 to 3600. |
Usage Guidelines
A single IP SLAs operation will repeat at a given frequency for the lifetime of the operation. For example, the ICMP Echo operation with a frequency of 60 sends an ICMP Echo Request packet once every 60 seconds, for the lifetime of the operation. This packet is sent when the operation is started, then is sent again 60 seconds later.
If an individual IP SLAs operation takes longer to execute than the specified frequency value, a statistics counter called "busy" is incremented rather than immediately repeating the operation.
Following are the recommended guidelines for configuring the frequency, timeout and threshold commands of the IP SLAs ICMP Echo operation:
(frequency seconds) then (timeout milliseconds) then (threshold milliseconds)
It is recommended to not to set the frequency value to less than 60 seconds because the potential overhead from numerous active operations could significantly affect network performance.
This command is supported in IPv4 networks and also for IPv6 networks where IPv6 addresses are supported.
Example: The following example shows how to configure an IP SLAs ICMP echo operation (operation 11) to repeat every 80 seconds. This example shows the frequency (IP SLA) command being used in an IPv4 network in ICMP echo configuration mode within IP SLA configuration mode:
(Routing)(config)#ip sla 11 (Routing)(config-ip-sla)#icmp-echo 152.15.10.145 (Routing)(config-ip-sla-echo)#frequency 80
