[ntp:questions] ntp server pool advice

unruh unruh at invalid.ca
Thu Dec 22 04:11:55 UTC 2011


On 2011-12-22, ben slimup <slimup78 at hotmail.com> wrote:
>
> Dear all,
>
> Thank you very much for support,
>
> i do not have 1000,000 client, i need those ntp servers to serve a load  between 100000 to 1000000 clients 
> over a public network with an accuracy of 100ms

Sorry, I do not believe that you have 100,000 to 1,000,000 clients.

>
> those clients will use dns round robin to resolve 4 external ip, 2 IPs on each site.
>  i have 4 servers with 4 ntp server slot card each ( meinberg M900)
> 1 ntp server card can support 10,000 request.
>
> how can implement that with  load balancing between site?
> do 8 ntp servers per site enough to support request for min 100000 to 1million clients 
> and be load balanced between site with round robin?
>
> on each site, do all servers need to be on the same subnet?
> do i need more than 4 external ip addresses to nat all of ntp server on each site?

People have suggested various possibilities. 

>
> again thanks for all
>
>
>> From: rgilbert88 at comcast.net
>> To: questions at lists.ntp.org
>> Date: Wed, 21 Dec 2011 15:26:18 -0500
>> Subject: Re: [ntp:questions] ntp server pool advice
>> 
>> On 12/21/2011 3:25 AM, ben slimup wrote:
>> >
>> > Dear all,
>> >
>> > i m currently working on some project that needs a particular ntp distribution design:
>> >
>> > i have to site with 4 public ip address, that can be used on both site, i need to serve between 100000 client to 1 million.. load balanced either on 1 site or both.
>> > i have on each site 2  box with 4 ntp server (slot card) that can deliver synchronize 10,000client per card
>> > i can also use a L4 load balancer on each site if required, also dns round robin

>> >
>> > i would like to know how can i design a proper ntp network with redundancy on both site that can handle such client request.

>> >
>> > Please expert kindly advise
>> >
>> > Thank you
>> >
>> > beny
>> 
>> Please use your return key!  Your message overflows a 22" wide screen!!!
>> 
>> You will need a very fast link to your internet provider.  I think T1 
>> service might be sufficient.  Consult an expert or two!
>> 
>> Be certain that your contract with your Internet Provider (IP) allows 
>> you to operate a server.  Some providers do not.  Any IP should be able
>> to handle the load but will almost certainly expect you to pay for the
>> bandwidth your server will require.
>> 
>> 
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