[ovs-discuss] How to change sflow sampleType_tag

Ben Pfaff blp at nicira.com
Tue Feb 17 19:34:06 UTC 2015


I'm adding Neil McKee, who knows much more about sflow than I do.

On Tue, Feb 17, 2015 at 07:28:33PM +0200, George Shuklin wrote:
> We're playing with sFlow features of OVS. We want to collect sflow
> with em-sflow <https://github.com/normelton/em-sflow> library (ruby,
> ttps://github.com/normelton/em-sflow
> <https://github.com/normelton/em-sflow>). Unfortunately it can not
> process received sflow packets deep enough.
> 
> After some research I found there are few types of sFlow packes,
> with different structure. As far as I understand it parse payload
> only for the sampleType_tag 0:3, but it leaves unprocessed header in
> sampleType_tag 0:1 (which is fine according to specs).
> 
> Is any way to configure OVS to send sFlow samples of type 3?

I don't think OVS has knobs like that.  It's not obvious to me whether
the correct solution here is to improve the library you're using or to
change OVS to do something different.  Neil?

Thanks,

Ben.



More information about the discuss mailing list