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

Daniel Stamatov Daniel.Stamatov at interoute.com
Mon Dec 1 09:11:10 EST 2014


Huh?
Is this valid for SCBE as well?

Daniel
       

>-----Original Message-----
>From: juniper-nsp [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf
>Of Phil Bedard
>Sent: Monday, December 01, 2014 2:58 PM
>To: Tobias Heister; juniper-nsp at puck.nether.net
>Subject: Re: [j-nsp] MPC3E oversubscribe rate with two 10x10GE MICs
>
>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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