[j-nsp] NTP Sources placement in MPLS network

Jared Mauch jared at puck.nether.net
Mon Nov 18 14:52:16 EST 2013

This all depends on what you need the clocking for.

If you want just generic time for accurate logs?

Depending on what you want to do, there's cheap NTP clocks like this:


For about $350 (including S/H in the US) you get a GPS clock.  With the right location/antenna you can get signal through some roofs.

There's a variety of higher-end timing options depending on what you need.

- Jared

On Nov 18, 2013, at 2:33 PM, Yham <yhameed81 at gmail.com> wrote:

> Hi Guys,
> In a SP environment where there are hundreds of PEs and P devices that got
> hundreds of customers VRFs, what is the best place to connect NTP sources.
> The place i can think of is connecting with VPNv4 Route Reflectors because
> they exist on top of hierarchy and so clock can travel downward from RR to
> PEs and P and from PEs to CEs and further down if required.
> Any thoughts on this please.
> Regards
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> juniper-nsp mailing list juniper-nsp at puck.nether.net
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