Re: [TICTOC] Scalable Synchronization Networks

[Tal Mizrahi <[e-mail]>]

Hi Liuyan,

That sounds promising, so it would be great if you could share that information.
It would certainly be useful to the working group.

We have been hearing a lot of doubts from customers and colleagues about PTP, e.g., that it is not widely deployed and not reliable.

Any data about scales, accuracy, downtime statistics, deployment scenarios, typical problems would be welcome.

Thanks,
Tal.


From: 韩柳燕 [mailto:[e-mail]]
Sent: Wednesday, October 28, 2015 5:10 PM
To: Jiangyuanlong; Tal Mizrahi; '[e-mail]'
Subject: Re: RE: Scalable Synchronization Networks

Hi Tal and all，

If needed, China Mobile will love to share our PTP and SyncE deployment experience with the group.

Several big cities in China e.g Beijing, Guangzhou etc. have deployed more than 20,000 PTN equipments for backhual.

Since synchronization for the wireless application is a critical service, in the event of that the synchronization performance goes out of tolerance, the entire system may fail.  Thus we have to find the efficient solutions for the synchronization management and monitoring its performance.

Best regards,
Liuyan


2015-10-28
________________________________
-------------------------------------
韩柳燕 / Han Liuyan
中国移动通信研究院 网络技术研究所 / China Mobile Research Institute
地址: 北京市西城区宣武门西大街32号创新大厦,100053
电话: [phone]-33076
传真：[phone]
手机: [phone]
Email: [e-mail]<mailto:[e-mail]>
-------------------------------------
________________________________
发件人： Jiangyuanlong
发送时间： 2015-10-28  19:04:30
收件人： Tal Mizrahi; '[e-mail]'
抄送： [e-mail]<mailto:[e-mail]>
主题： RE: Scalable Synchronization Networks
Tal,
This I-D did introduce some typical problems in the deployment of synchronization networks. We can give more deployment analysis in other documents if the WG has interest.
With regard to scales, several cities in China already have 10,000+ mobile backhaul packet equipments, and all those equipments are required to take part in the synchronization network.
Thanks,
Yuanlong
-----Original Message-----
From: Tal Mizrahi [mailto:[e-mail]]
Sent: Wednesday, October 28, 2015 5:19 PM
To: Jiangyuanlong; '[e-mail]'
Cc: [e-mail]<mailto:[e-mail]>
Subject: RE: Scalable Synchronization Networks
Hi Yuanlong,
Since some of the co-authors of this draft are operators, it would be great if you could share your deployment experience with the working group (scales, statistics, accuracy, typical problems, lessons learned). This would definitely help to better understand the scalability problem statement.
Cheers,
Tal.
>-----Original Message-----
>From: TICTOC [mailto:[e-mail]] On Behalf Of Jiangyuanlong
>Sent: Wednesday, October 28, 2015 11:01 AM
>To: '[e-mail]'
>Cc: [e-mail]<mailto:[e-mail]>
>Subject: [TICTOC] Scalable Synchronization Networks
>
>Hi all,
>
>Since the deployment of 4G mobile networks, many mobile backhaul networks
>are providing SyncE and/or IEEE 1588 synchronization capabilities for the
>cells.
>As these backhaul networks consist of thousands of nodes, the scalability of
>synchronization networks poses as a great challenge to service providers.
>
>This I-D provides a problem statement for scalability in synchronization
>networks:
>https://tools.ietf.org/html/draft-hjxl-ssn-ps-00
>
>Opinions and discussions are cordially welcome, and anyone who has interest
>may also drop me a private email.
>
>Best regards,
>Yuanlong
>
>_______________________________________________
>TICTOC mailing list
>[e-mail]<mailto:[e-mail]>
>https://www.ietf.org/mailman/listinfo/tictoc