[j-nsp] what’s the story behind MPC5E

[Hannes Viertel]

A couple of remarks

It’s more like Gen2 (MPC4) and Gen2,5 (MPC5) trio… 

On MPC5, Each of the two XM complexes is considered a PFE on the MPC5. Each XM connects with ~either 3x40G oder 2x60G on a MX960 chassis depending on the number of active PFE’s. That’s why it’s considered a 240G FDX line card.  The MPC5 comes in two flavours.. 24x10G or 2x100+4x10G … so no need to put more horsepowers on the backplane links.


The MPC4 has also two XM’s and is in all flavours oversubscribed… ( 32x10 and 2x100+8x10g ). Each PFE is capable of processing ~130g traffic towards the backplane. Assuming a base3 chassis and scbe2 in 3+0 active mode, you should be able to achieve/come close to your 260g. 

Like David mentioned, the XQ on the MPC5 is crying for  services where hcos/per subscriber queueing is required in large scale.

Hope that helps

hannes

On 20/05/16 16:27, "juniper-nsp on behalf of david.roy at orange.com" <juniper-nsp-bounces at puck.nether.net on behalf of david.roy at orange.com> wrote:

>Erratum: it's a 240 Gbps PFE 
>
>-----Message d'origine-----
>De : ROY David DTSI/DERS 
>Envoyé : vendredi 20 mai 2016 16:24
>À : 'Adam Vitkovsky'; juniper-nsp at puck.nether.net
>Objet : RE: what’s the story behind MPC5E
>
>MPC5e has one PFE (260Gpbs) made of 2 XM chip, 1 XL and 1 XQ (only for Q mode) 
>
>-----Message d'origine-----
>De : juniper-nsp [mailto:juniper-nsp-bounces at puck.nether.net] De la part de Adam Vitkovsky Envoyé : vendredi 20 mai 2016 16:20 À : juniper-nsp at puck.nether.net Objet : [j-nsp] what’s the story behind MPC5E
>
>Hi folks,
>
>Would anyone know what’s the story behind MPC5E (which I think uses one PFE) with Gen 2 TRIO (XM, XL)?
>Forwarding capability of up to 130 Gbps per Packet Forwarding Engine.
>Up to 240 Gbps of full-duplex traffic.
>
>- Since 240 is not 2x130 it begs the question what components are the bottleneck then?
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>And to add to the confusion the MPC4E which uses two PFEs with Gen 1.5 TRIO (XM, 2xLU) is rated Up to 260 Gbps of full-duplex traffic.
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>- Would have thought that Gen 2 TRIO would have better performance or better connectivity to fabric ?
>
>
>adam
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>
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