[c-nsp] PE "Sprawl" - P/Core Router suggestions.

[Saku Ytti]

On 28 December 2016 at 06:04, CiscoNSP List <CiscoNSP_list at hotmail.com> wrote:

Hey,

> ASR9001 for our larger POPs, but 10G port density on them is an issue...4 onboard, and they only support the 4 port 10G MPAs(2 line card slots, so 2 of these)....so total 12 x 10G?

ASR9001 is Typhoon (2nd) generation HW, it won't be supported on
XRe/Linux. This isn't show stopper, but something to be mindful about,
you're buying sunsetting hardware.

> ASR1K - I see they have released the 1001/2-HX with the 1002 having an EPA slot - So, 8 x 10G onboard, and with an EPA 10x10G a total of 18 x 10G ports - but as these are very very new, Im guessing very pricey?

It is very high-touch device so port price is premium. If you're not
gonna need statefull FW, NAPT etc, it may not be the most economic
choice. Also IOS-XE makes automation unnecessarily expensive/hard as
it lacks 'roll forward' ((c) Jared), that is, ability to move from
arbitrary full config A to arbitrary full config B, which IOS-XR can
do, which makes automation much cheaper and easier.
I know IOS-XE has 'configure replace', but at least last time I tried
it, it was anything but hitless.

> NCS - Very new, and know very little about them - NCS5001/NCS5002 - 10G port density definitely not an issue(40 + 80)...but they are an "MPLS agg router"...So, potentially an option if we went BGP-free "core"?

BGP-free core (and strictly core, no customers, peers etc) is likely
one of the better placements for these boxes right now. From the
choices presented, this would be mine.
If you were not Cisco house, there would be other options.


-- 
  ++ytti