Re: About Cisco SAA - Jitter, RTT, etc.

Hi,

you need to use cricket with rrdtool 1.2 in order to do that (see the mail
archives how to install). rrdtool 1.0 does not support COMPUTE ds, as
far as I know. Then you can do:

# datasources
#ds0
datasource NumOfRTT
    ds-source   =   snmp://%snmp%/NumOfRTT.%inst%

#ds1
datasource RTTSum
    ds-source   =   snmp://%snmp%/RTTSum.%inst%

#ds2
datasource RTTMin
    ds-source   =   snmp://%snmp%/RTTMin.%inst%

#ds3
datasource RTTMax
    ds-source   =   snmp://%snmp%/RTTMax.%inst%

#ds4
datasource rttaverage
    rrd-ds-type     =       COMPUTE
    rrd-cdef        =       ds1,ds0,/

# Target type
targetType  RTT
    ds   =   "NumOfRTT, RTTSum, RTTMin, RTTMax,rttaverage"
    view  =   "RTT Min Max: RTTMin RTTMax
                     RTT Average:rttaverage "


You have to keep track of the sequence of ds on your own, it corresponds
to the sequence in the targettype ds= line.

And of course you'll need a graph rttaverage definition.

Regs,
Jiri



On 11/21/06, Stephan Pfoh <[email protected]> wrote:
>
>
>
>     Hi,
>
>     Here is my cricket file :
>
> # OID RTT
> OID NumOfRTT  1.3.6.1.4.1.9.9.42.1.5.2.1.1
> OID RTTSum   1.3.6.1.4.1.9.9.42.1.5.2.1.2
> OID RTTMin   1.3.6.1.4.1.9.9.42.1.5.2.1.4
> OID RTTMax   1.3.6.1.4.1.9.9.42.1.5.2.1.5
>
> # datasources
> datasource NumOfRTT
>     ds-source   =   snmp://%snmp%/NumOfRTT.%inst%
>
> datasource RTTSum
>     ds-source   =   snmp://%snmp%/RTTSum.%inst%
>
> datasource RTTMin
>     ds-source   =   snmp://%snmp%/RTTMin.%inst%
>
> datasource RTTMax
>     ds-source   =   snmp://%snmp%/RTTMax.%inst%
>
> # Target type
> targetType  RTT
>     ds   =   "NumOfRTT, RTTSum, RTTMin, RTTMax"
>     view  =   "RTT Min Max: RTTMin RTTMax"
>
>
> Now I would like to make two graphs :
>     1 - One with RTTMin and RTTMax : Easy, done.
>     2 - The second is RTTSum / NumOfRTT, but I don't know to do !!! An
> Idea ???
>
> In fact I don't know how to make an operation during graphing or in the
> datasource, or somewhere else.
>
> Thanks
>
>
>
>
>
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