I should have also said: I think we can continue the discussion on this one 
point during IETF LC. So once you post the rev with the changes to section 5 I 
will initiate IETF LC.

Thanks,
Alissa

> On Nov 18, 2015, at 1:38 PM, Alissa Cooper <[email protected]> wrote:
> 
> Hi Haibin,
> 
>> On Nov 16, 2015, at 10:44 PM, Songhaibin (A) <[email protected] 
>> <mailto:[email protected]>> wrote:
>> 
>> Hi Alissa,
>>  
>> I can accept the second suggestion.
>>  
>> But for the first comment, I’m not sure. IMO, it does not distinguish the 
>> bytes sent/rcvd to/from upstream or downstream peer, but only calculate that 
>> in total. 
> 
> Ok. Please answer the questions below, though. The answers are not evident 
> from the draft.
> 
> Thanks,
> Alissa
> 
>>  
>> Best Regards!
>> -Haibin
>>  
>> From: Alissa Cooper [mailto:[email protected] <mailto:[email protected]>] 
>> Sent: Thursday, November 12, 2015 7:10 AM
>> To: Songhaibin (A)
>> Cc: p2psip; [email protected] 
>> <mailto:[email protected]>
>> Subject: Re: [P2PSIP] AD evaluation: draft-ietf-p2psip-diagnostics-17
>>  
>> Thanks Haibin. This looks good but there are still a few unresolved issues 
>> from our earlier mail exchange:
>>  
>> The definitions of EWMA_BYTES_SENT and EWMA_BYTES_RCVD seem problematic.
>> 
>> sent = alpha x sent_present + (1 - alpha) x sent
>> rcvd = alpha x rcvd_present + (1 - alpha) x rcvd
>> 
>> As written these equations are not right because sent/rcvd appear on both 
>> sides. It would be clearer to use last_sent and last_rcvd or some such on 
>> the right-hand side of these equations. But this begs some bigger questions:
>> 
>> - Does this place a requirement on all nodes implementing this specification 
>> to have to calculate these values every 5 seconds?
>> - How are the values calculated the first time?
>> - How was the value of 5 seconds chosen?
> 
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