[j-nsp] MPC3E oversubscribe rate with two 10x10GE MICs

[Olivier Benghozi]

If you use one 10x10GE MIC and one 20x1GE, on the paper 120 Gb/s would mean no oversubscribing, but how the capacity will be really divided?

> Tom Storey <tom at snnap.net> wrote :
> 
> As was explained to me a while back, the MPC3E has ~120gbit of capacity.
> 
> But the devil was in how that capcity is shared between the two MIC slots.
> 
> When you have two active MICs that capacity is divided equally between the
> two MICs: 50/50% or ~60/60gbps. It is NOT a case of operate one card at
> full whack and only use a couple of ports on the other.
> 
> If you plan to put in a second 10x10 MIC then you'll have to shuffle your
> circuits around to balance them across the two MICs too.
> 
> And if you need all wire speed ports then you need the 16x10G MPC3, and
> only use 3 ports of each PIC.
> 
> On 30 November 2014 at 23:22, Robert Hass <robhass at gmail.com> wrote:
> 
>> Hi
>> I'm currently using MPC3E with one 10x10GE MICs in my MX480 and MX960
>> routers.
>> 
>> I need to add 10GE ports, if I will put second 10x10GE MIC in existing
>> MPC3E what will be oversubscribe rate ? I'm not sure but docs says about
>> 200Gbps for MPC3E then It should be wire-speed if docs claims full-duplex
>> or 1:2 if docs claims half-duplex.
>> 
>> What is best solution (from price point of view) to have 16 x 10GE in 1
>> slot on MX480/MX960 ? MPC3E + 10x10GE MICs or something different ?