SLA monitoring and reporting to customers

Mon Mar 19 16:05:44 UTC 2007

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william(at)elan.net wrote:
> 
> On Sun, 18 Mar 2007, virendra rode // wrote:
> 
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>> william(at)elan.net wrote:
>>>
>>>
>>> On Sun, 18 Mar 2007, Rubens Kuhl Jr. wrote:
>>>
>>>> What open-source or low-budget tools are operators using for SLA
>>>> monitoring when the reports (current state and historical) should be
>>>> available to customers ?
>>>
>>> Please define SLA in terms of monitoring.
>> - -----------------------
>> I would say,
>>
>> - - availability
> 
> OK - network connection up or UP/DOWN with list of when its down
> and for how long and SLA based on amount of time its been down
> or more commonly time_up/time_down*100
> 
>> - - response time / latency
> 
> ok ping latency graph for user view with SLA based on maximum
> average latency over given time period
> 
>> - - utilization
> 
> How is that part of SLA? Or do you mean you gurantee that
> your own upstream network connection would not be overutilized?
- -----------------
When an object exceeds a specified threshold (e.g. cpu, interface,
temperature, routing table, etc) which could cause it to be unavailable
triggering an event.


> 
>> - - accuracy and errors
> 
> accuracy of what? what type of errors, packet drops?
- --------------
availability and reachability because we care about of uptime, correct?


> 
>> - - five nines, six nines , take your pick and define your own holy
>> grail.
> 
> $ echo "60*24*365*(1-0.99999)" | bc -l
> 5.25600
> 
> You wish to tell me you guarantee network connection to customer to
> be down for no more then 5 minutes during the year? Yeh, right :)
> (but don't let me discourage any of you in trying to achieve it!)


regards,
/virendra


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