Re: OT: interface HundredGigE0/2/0/0

Good info... Sounds like a fun project to be working on. I'll just add that
the 7K supports FEX as well, and also on a much larger scale than the 5K.

Pretty good post below comparing the two architectures... I have a better
understanding now. The oversubscription that they were referring to is with
the 10GE FEX (2232). That makes sense... you have 32x host ports and 8x
fabric ports (4:1).

We (Joseph and I) were initially talking about the oversubscription of the 7K
line cards.

http://m.zimbio.com/Cisco+Systems+Inc./articles/n000mxz81Fm/Cisco+Nexus+2000+
FEX+Vs+Juniper+QFabric+QFX3500

Sent from my iPhone

On Jun 7, 2012, at 10:55 AM, Mike Johnson <mtb.mikej_at_gmail.com> wrote:

> I'm not an expert on Juniper, but just a comment on cost... for small
installations QFabric is expensive. The fabric interconnect is not cheap.
However, we are doing a comparative design study between Nexus and QFabric for
a new computer room of 100 cabinets - 3200 10G unified ports. Juniper is
significantly cheaper. It's possible we have a better discount with Juniper
than with Cisco, but I don't think that's the major difference.
>
> QFabric is basically the same a Nexus 5K/2K fabric extension on a much
larger scale. Just like you wouldn't generally build a data center using only
5K/2K, you wouldn't build a data center with only QFabric. You want the big
beefy routers (7K or MX) to things like MPLS, L2 interconnects, etc.
>
>
> On Thu, Jun 7, 2012 at 8:33 AM, Ronnie Angello <ronnie.angello_at_gmail.com>
wrote:
> I also hear that QF is an extremely expensive solution...
>
> Sent from my iPhone
>
> On Jun 7, 2012, at 9:29 AM, Ronnie Angello <ronnie.angello_at_gmail.com>
wrote:
>
> > I don't know much about QFabric, other than next to no one has implemented
it in production. I'm not even sure of what the use case would be. It's also
a very proprietary solution... I don't know anything about the architecture
of the underlying switches, so can't comment there. There are tons of blog
posts out there that dive deeper into it than I care to go.
> >
> > Nexus is a proven, widely deployed architecture, and I can think of tons
of use cases. There's FabricPath, which is a prestandard version of TRILL,
but TRILL will be supported once standardized. Not to mention that the same
platform does FCoE, MPLS, OTV, etc.
> >
> > Not sure what they're referring to about oversubscription. It depends on
the configuration. There are some oversubscribed line cards, but you can now
get up to 768 line rate 10GE ports with Fab 2s and F2 line cards.
> >
> > Ronnie
> >
> > Sent from my iPhone
> >
> > On Jun 7, 2012, at 8:59 AM, Jay McMickle <jay.mcmickle_at_yahoo.com> wrote:
> >
> >> We attended a Juniper lunch and learn yesterday. They were very insistent
about not performing this type of over subscription. They were pushing
QFabric, but they mentioned it on other other switches. For those that don't
know me, I bleed Cisco, and I'm just trying to learn along the way, so don't
judge me for the Juniper question!
> >>
> >> Anyone have an opinion on Juniper versus Cisco on the topic subscription
and backplane (Nexus versus QFabric).
> >>
> >> If you don't know- don't speak. Granted this is a Cisco CCIE GS, but we
should know what we're up against when speaking to customers.
> >>
> >> I've got Olive and learning along the way.
> >>
> >> Cheers!
> >>
> >> Regards,
> >> Jay McMickle- CCIE #35355 (R&S)
> >> Sent from iJay
> >>
> >> On Jun 7, 2012, at 3:51 AM, "Joseph L. Brunner" <joe_at_affirmedsystems.com>
wrote:
> >>
> >>> Knowing Cisco's Nexus model - it will be a 100Gig transceiver connected
to the backplane on 2 x 20Gb channels :)
> >>>
> >>> Or every 4 of them will share one 100Gbps backplane connection :)
> >>>
> >>> LOL
> >>>
> >>> -----Original Message-----
> >>> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
Jazz Sunn
> >>> Sent: Wednesday, June 06, 2012 9:09 PM
> >>> To: Cisco certification
> >>> Subject: interface HundredGigE0/2/0/0
> >>>
> >>> https://imgur.com/a/6eIDp
> >>>
> >>> Awesome!
> >>>
> >>>
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> >>
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Received on Thu Jun 07 2012 - 23:43:59 ART