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

[Phil Bedard]

The 16x10G MPC is not quite line rate full duplex because the PFE processing capacity is a little over 70G total per 4 ports.  If the traffic is internal to the PFE it doesn't count towards that.  If your ports are mostly incoming traffic or outgoing its not an issue,but if you truly had bidirectional high traffic levels you will get about 35G in each direction if it is all headed to/from the fabric. 

Also on the MX960 at least the fabric connection is only about 38G so you wont get a full 40G line rate in one direction either. 

Phil

-----Original Message-----
From: "Tobias Heister" <lists at tobias-heister.de>
Sent: ‎11/‎30/‎2014 7:08 PM
To: "juniper-nsp at puck.nether.net" <juniper-nsp at puck.nether.net>
Subject: Re: [j-nsp] MPC3E oversubscribe rate with two 10x10GE MICs

Hi,

Am 01.12.2014 um 00:22 schrieb Robert Hass:
> 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.

Afaik the MPC3E has one 130G Trio so two 10x10GE will be oversubribed 200:130

> 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 ?

The 16x10GE is line rate (with SCBE and higher) there is also the 32x10 MPC4E wich is oversubriced 320:260 on SCBE or line rate on SCBE2.
So depending on your SCB and the need for linerate you have several choices.  Then just do the math and calculate your per 10G oversub/line rate port price.

-- 
Kind Regards
Tobias Heister
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