Latency question - Juniper MX960 vs the Tellabs 8860

Saku Ytti saku at
Wed Feb 13 17:53:14 UTC 2019

Hey Steve,

15us would be more than you'll realistically see in uncongested MX960,
but it is in the ball-bark. I've not tried Tellabs, if customer is
latency sensitive you probably want to look constant time pipeline
devices rather than run to completion npus. You'll see low single
digit us on typical box. Remember that 10us is just 2km of fibre (1km
of RTT).

On Wed, Feb 13, 2019 at 7:28 PM Steve Danello <the76posse at> wrote:
> Looking for two latency profiles, best/worst cast would be great for the Telllabs 8860 and Juniper MX960.   Looks like the Juniper may be in the 15us range
> Both cases would be a 10Gb -1Gb and 1Gb - 10Gb
> We’d understand the serialization piece; really looking to provide a customer the hardware latency, we don’t have a great means to test them
> Thanks all!
> Steve


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