Re: Re[4]: about sFlow instance

Hello Kobayashi-san,

Yes, this solution could work with sFlow v4 datagrams too, but you
would have to configure it some other way. If you want to use a
standard sFlow MIB for configuration, then the sFlow version 5 MIB
is the only one that understands instances.

regards,
neil

On Aug 29, 2005, at 5:39 AM, kobayashi atsushi wrote:

> Hello Neil McKee,
>
> Thank you for your comment.I understood this solution of using a
> different UDP ports.
> But,I have a small question about MIB.I wrote my comment in in-line.
>
> On Fri, 26 Aug 2005 10:55:04 -0700
> neil mckee <neil.mckee@inmon.com> wrote:
>
>
>> Hello Kobayshi-san,
>>
>> There is nothing to stop you from configuring two sampler instances
>> to send to the same collector. It is allowed. You could configure
>> each instance to send to a different UDP port (e.g. 6343 and 6344).
>> That way the collector can separate them easily. Otherwise it would
>> have to separate them using the samplingRate field (which is sent
>> with each flow-sample).
>>
>> In terms of the sFlow MIB: you would do this by reserving two slots
>> in the sFlowRcvrTable. For example, say you want to double-monitor
>> interface 1, and send the data to a collector on 192.168.4.5, using
>> ports 6343 and 6344:
>>
>>
>
> I understood that we would be able to implement this solution
> whichever
> the sFlow datagram v4 or v5.
>
>
>> The receiver table might look like this:
>>
>> sFlowRcvrTable
>> sFlowRcvrEntry (sFlowRcvrIndex=1, sFlowRcvrAddress=192.168.4.5,
>> sFlowRcvrPort=6343)
>> sFlowRcvrEntry (sFlowRcvrIndex=2, sFlowRcvrAddress=192.168.4.5,
>> sFlowRcvrPort=6344)
>>
>> And the flow-sampling table might look like this:
>>
>> sFlowFsTable
>> sFlowFsEntry (sFlowFsDataSource=ifIndex.1, sFlowFsInstance=1,
>> sFlowFsReceiver=1, sFlowFsPacketSamplingRate=400)
>> sFlowFsEntry (sFlowFsDataSource=ifIndex.1, sFlowFsInstance=2,
>> sFlowFsReceiver=2, sFlowFsPacketSamplingRate=1)
>>
>> If your switch/router does not support multiple receivers and
>> multiple sampler instances, then you may have to just change the
>> sampling rate to 1 and do the sub-sampling at the collector instead.
>>
>
> In terms of the sFlow MIB of sFlow v5 text,I understood this
> sFlowFsTable
> that you wrote as answer.
> The other side,in case of sFlow v4 text,the sFlowEntry can't show
> both these
> Entries because the sFlowDataSource is index of SFlowEntry.
> Or should we do this in the sFlow MIB of sFlow v5 text?
>
> Regards,
> Kobayashi Atsushi
>
> ---
> KOBAYASHI ATSUSHI <akoba@nttv6.net>
> NTT Information Sharing Platform Lab.
Received on Mon Aug 29 08:26:28 2005