IP SLA Setup

[ulrichkenneth1]

Hi All, 

I'm a little confused on the IP SLA..

I've read the Cisco Documentation, websites, but I still can't grasp the understanding of it.

Can someone help me understand it in plainly please?

I'm using the following syntax, but when I setup the frequency, it says nothing short of 5000ms, but when I use the ? it says to list in seconds..

ip sla 100
icmp-echo >destination< source-ip >source<
vrf inet
owner myself
tag PING-TO-LECMODEM
frequency 1
threshold 100
time 100
hist hour 96
ip sla schedule 100 life forever start-time now

My goal is to set up a contious ping every second and records every packet 

[balaji.bandi]

5seconds default.

[balaji.bandi]

IP SLA explained more here :

https://www.practicalnetworking.net/stand-alone/cisco-ip-sla-using-a-cisco-router-to-generate-traffic/

[Georg Pauwen]

Hello,

try and enter the threshold and the timeout first, in the order below:

Router(config-ip-sla-echo)#threshold 100
Router(config-ip-sla-echo)#timeout 100
Router(config-ip-sla-echo)#frequency 1

[ulrichkenneth1]

Georg Pauwen, 

That seem to work.

I'm sorry for asking this, but I am very rusty on my Cisco.. I'm coming from Adtran based products to Cisco..

Can you explain what each of them do?

I tried reading the Cisco documents but it seems to be in a foreign language.

Can you explain what the Threshold, Timeout, and Frequency mean?

[Georg Pauwen]

Hello,

frequency --> is the amount of time between each ICMP(ping). 1 second is the lowest value

timeout ->is the amount of time the SLA waits for a response. If no response is received within 100ms, the ICMP is considered failed

threshold --> sets the upper value for calculating network monitoring statistics created by an IP SLAs operation. You can see these statistics with the  'show ip sla statistics' command

[ulrichkenneth1]

Hi George, 

Thank you for that detailed information.

Please correct me if I am wrong, On the Threshold, does that mean that when I run the "sh ip sla stat" command, that the number of success/fails will increase accordingly each time between me running the sh ip sla stat to view the results?

I've had an issue on some cases, where I set the values like I did in my original post, but when I run the sh ip sla stats, it would just stay on "Number of Successes: 1" for 10+ minutes..

I would prefer to have it set to where when I run sh ip sla stats, that it updates every second or 2 seconds.. 
Is my syntax off in my original post? or am I missing a value/trigger?