Re: [Netconf] WG adoption poll draft-zheng-netconf-udp-pub-channel-00

There seem to be a few issues with this draft:

1) it suggests a 32 bit field for device ID and then suggests generating it from the MAC address.  48 into 32 doesn’t go.   Perhaps an EUI-64 makes more sense?  Or do you even need this given that UDP packets tend to have source IP addresses? Or are you thinking in terms of NAT?  Or of correlating notifications from different line-cards on the same system that may have different source IP addresses?

2) the timestamp has 32 bits each of seconds and microseconds and says those are as per RFC3339.  From my reading of RFC3339 it encodes dates/times as strings.

3) building your own reliability mechanism on top of UDP seems like a strange choice.  Why not just use TCP if you want reliable delivery?  Or re-use existing work on adding reliability to UDP if you see issues with TCP? (in which case explain how reliability based on UDP is better than TCP).

4) big chunks of the draft are left TBD (e.g. selecting encodings, adding authentication/encryption options).    Again there may be work you can reuse there rather than defining your own.

sections 1 - 3 are generally ok - but don’t really say anything we didn’t know already...

Giles

> On 22 Aug 2017, at 02:46, Lizhenbin <lizhenbin@huawei.com> wrote:
> 
> Yes/Support.
> 
> Best Regards,
> Zhenbin(Robin)
> 
> 
> 
> -----邮件原件-----
> 发件人: Netconf [mailto:netconf-bounces@ietf.org] 代表 Kent Watsen
> 发送时间: 2017年8月22日 6:04
> 收件人: netconf@ietf.org
> 主题: [Netconf] WG adoption poll draft-zheng-netconf-udp-pub-channel-00
> 
> All,
> 
> This is start of a two-week poll on making the following draft a NETCONF working group document:
> 
>  draft-zheng-netconf-udp-pub-channel-00 [1]
> 
> Please send email to the list indicating "yes/support" or "no/do not support".  If indicating no, please state your reservations with the document.  If yes, please also feel free to provide comments you'd like to see addressed once the document is a WG document.
> 
> 
> [1] https://tools.ietf.org/html/draft-zheng-netconf-udp-pub-channel-00
> 
> 
> Thank you,
> Kent (and Mahesh)
> 
> 
> 
> 
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