[j-nsp] Trio Bandwidth

[joel jaeggli]

On 5/30/14, 10:32 AM, Eric Van Tol wrote:
> Hi all, I'm trying to clear something up that's been bothering me for
> some time and that is the MPC1/MPC2/MPC3E actual bandwidth specs.  I
> know from various sources that the MPC1 has a single Trio chipset,
> MPC2 has two Trio chipsets, and the MPC3E has a single enhanced Trio
> chipset.
> 
> The question I have is related to bandwidth.  The Juniper MX Series
> book says the MPC1 is 40Gb/s throughput, the MPC2 is 80Gb/s
> throughput, and the MPC3E is 130Gb/s throughput.  Are these numbers
> in "full duplex" rates, ie. the MPC2 can only handle 4x10G ports
> total before it is oversubscribed?  Or is the total throughput on
> each one really 80Gb/s, 160Gb/s, and 260Gb/s bi-directionally?

the bandwidth is symmetric... the forwarding lookup is only done on the
ingress linecard.

> Bonus question - what does the 'Enhanced' portion of the MPC1E/MPC2E
> provide over the original non-E versions?

larger microcode size

which impacts the availability of some relatively esoteric features...

> 
> Thanks, evt
> 
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> 


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