[j-nsp] MX960 with 3 RE's?

[Colton Conor]

So assuming I got with something like this setup:
http://www.ebay.com/itm/Juniper-MX960BASE-AC-10x-DPC-R-4XGE-XFP-MS-DPC-1yrWrnty-Free-Ship-40x-10G-MX960-/351615023814?hash=item51dde37ac6:g:WUcAAOSwLVZViHc~

That has RE-2000's, Regular SCBs, and all DPC linecards. Would these all be
able to run at line rate?

On Thu, Jan 14, 2016 at 4:19 PM, Christopher E. Brown <
chris.brown at acsalaska.net> wrote:

>
> It is 120Gbit agg in a SCB system as the limit is 120G/slot.
>
> This is in the form of 30Gbit per TRIO and 1 TRIO per 4 ports.
>
> So, use 3 of 4 in each bank if you want 100% line rate.
>
> SCBE increases this to 160Gbit or better (depending on age of chassis)
> allowing for line rate on all 16.
>
>
> Agree, mixing DPC and MPC is a terrible idea.  Don't like DPC to begin
> with, but nobody in their right mind mixes DPCs and MPCs.
>
> On 1/14/16 13:09, Saku Ytti wrote:
> > On 14 January 2016 at 23:11, Mark Tinka <mark.tinka at seacom.mu> wrote:
> >
> > Hey,
> >
> >>> A surplus dealer recommended the MPC-3D-16XGE-SFPP-R-B, which is less
> >>> than $1k/port used.  But it only supports full bandwidth on 12 ports,
> >>> would be oversubscribed 4:3 if all 16 are in use.  They are Trio
> chipset.
> >
> >> I wouldn't be too concerned about the throughput on this line card. If
> >> you hit such an issue, you can easily justify the budget for better line
> >> cards.
> >
> > Pretty sure it's as wire-rate as MPC1, MPC2 on SCBE system.
> >
> > Particularly bad combo would be running with DPCE. Basically any
> > MPC+DPCE combo is bad, but at least on MPC1/MPC2 systems you can set
> > the fabric to redundancy mode. But with 16XGE+SCB you probably don't
> > want to.
> >
> > There is some sort of policing/limit on how many fabric grands MPC
> > gives up, like if your trio needs 40Gbps of capacity, and is operating
> > in normal mode (not redundancy) then it'll give 13.33Gbps of grands to
> > each SCB.
> > However as DPCE won't use the third one, DPCE could only send at
> > 26.66Gbps towards that 40Gbps trio. While MPC would happily send
> > 40Gbps to MPC.
> >
>
>
> --
> ------------------------------------------------------------------------
> Christopher E. Brown   <chris.brown at acsalaska.net>   desk (907) 550-8393
>                                                      cell (907) 632-8492
> IP Engineer - ACS
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