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what is the meaning of these IP sla parameters/timers

Answered Question
Jul 15th, 2013
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Hi there!
I really want to understand what this timers are, and how they act to the ip sla

for example:


ip sla monitor 10

type echo protocol ipIcmpEcho 4.2.2..2 source-interface FastEthernet0/0

timeout 6000

threshold 7000

frequency 8


what does mean timeout, threshold, and what frequency.


in above scenario, it the link to reach 4.2.2.2 is dropped, how many seconds will change the track from up to down?


What will happen if none of them is configured?


Regards!

Correct Answer by cadet alain about 4 years 1 month ago

Hi,


frequency: how often to send the SLA probe in seconds,here every 8 seconds.

timeout: how often to wait for a reply in milliseconds, here 6000 milliseconds or 6 seconds

threshold: http://netexpert.blogspot.be/2009/02/ip-sal-timeout-or-threshold.html

its more of a statistical tool used to evaluate if the timeout value can be lowered or must be raised in normal conditions, at least this is how I understand it.

If these values are not set they default to the default values:http://www.cisco.com/en/US/docs/ios/ipsla/configuration/guide/sla_icmp_echo.html


In this config when an echo-reply is not received after 6 seconds then the status will be False and the tracked object will be Down.


Regards


Alain



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Correct Answer
cadet alain Mon, 07/15/2013 - 14:02
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  • Purple, 4500 points or more

Hi,


frequency: how often to send the SLA probe in seconds,here every 8 seconds.

timeout: how often to wait for a reply in milliseconds, here 6000 milliseconds or 6 seconds

threshold: http://netexpert.blogspot.be/2009/02/ip-sal-timeout-or-threshold.html

its more of a statistical tool used to evaluate if the timeout value can be lowered or must be raised in normal conditions, at least this is how I understand it.

If these values are not set they default to the default values:http://www.cisco.com/en/US/docs/ios/ipsla/configuration/guide/sla_icmp_echo.html


In this config when an echo-reply is not received after 6 seconds then the status will be False and the tracked object will be Down.


Regards


Alain



Don't forget to rate helpful posts.

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