[j-nsp] NTP Sources placement in MPLS network
yhameed81 at gmail.com
Tue Nov 19 06:53:08 EST 2013
Thanks Jared. I am planning deploy ntp source that will point to global NTP.
I am curious to know where service provider with mpls network position the
NTP? Any best practices ?
On Mon, Nov 18, 2013 at 5:57 PM, Jared Mauch <jared at puck.nether.net> wrote:
> In this case you can sync to any other device or devices that are globally
> reachable. Typically you can just use some IP that doesn’t often change,
> e.g.: loopback. If you are running 100% of the network, you can also use
> the ‘ntp broadcast’ and similar interface commands to listen/send this data
> There’s lots of ways to do this, and not necessarily a ‘wrong’ way.
> - Jared
> On Nov 18, 2013, at 5:54 PM, Yham <yhameed81 at gmail.com> wrote:
> > Thank Jared,
> > NTP is only needed to synchronize the logs so on event of failure, logs
> from related devices can be correlated.
> > Thanks
> > On Mon, Nov 18, 2013 at 2:52 PM, Jared Mauch <jared at puck.nether.net>
> > 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:
> > http://www.netburnerstore.com/product_p/pk70ex-ntp.htm
> > 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
> > - 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
> >> hundreds of customers VRFs, what is the best place to connect NTP
> >> The place i can think of is connecting with VPNv4 Route Reflectors
> >> they exist on top of hierarchy and so clock can travel downward from RR
> >> PEs and P and from PEs to CEs and further down if required.
> >> Any thoughts on this please.
> >> Regards
> >> _______________________________________________
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