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

While there are some good facts about both products, I don't believe the
QFX3500 should be compared to the 2k FEX at all. In fact, it's more
comparable to a 5k if anything. As the article points out, the FEX is just
a bunch of ports added to the X-bar fabric of the 5k. And I also wouldn't
go as far as saying it's like a line card because it has it's own power
supplies and can be uplinked by separate 5K's. Here's a good example of how
the FEX can be deployed via vPC ... which is what we are doing in our DC
right now ...

http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/mkt_ops_guides/513_n1_1/n5k_enhanced_vpc.pdf

I haven't personally used or seen the QFabric products in action, but I do
not believe Juniper has an extender like the 2k ... which is why it's more
expensive and hence the over subscription which means the FEX is much
cheaper. Someone please correct me if i'm wrong.

So far, we love the path Cisco is going with the Nexus lineup! We hope to
soon eliminate as many 9148's as possible.

Regards,
Max
On Thu, Jun 7, 2012 at 10:43 PM, Ronnie Angello <ronnie.angello_at_gmail.com>wrote:

> 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!
> > >>>
> > >>>
> > >>> Blogs and organic groups at http://www.ccie.net
> > >>>
> > >>>
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Received on Fri Jun 08 2012 - 16:57:53 ART