Re: 3750s in the Core

Recently we had a customer who wasn't willing to deploy non-IOS swtiches. So
we proposed Cisco 4948 in lieu of 4503 which was proposed earlier. You may
want to look into 4900 series <http://www.cisco.com/en/US/products/ps6021/>.
The obvious disadvantages over 4503 were lack of modularity and PS
redundancy. Also, 4900 series don't support POE whereas 3750s do.

HTH,
~Ahsan

On Wed, Jun 17, 2009 at 1:27 AM, Anthony Faria <tfaria72_at_gmail.com> wrote:

> Loop,
>
> Do you have ip security cameras or any kind of streaming? What are you
> running on your network? What does your business plan to add in the future?
> Those are some of the things you need to consider.
>
> Tony
>
> On Tue, Jun 16, 2009 at 10:42 AM, Steve Means <smeans_at_ccbootcamp.com>
> wrote:
>
> > I agree with Joseph here. Its been my experience that most of the
> networks
> > I've worked on (with some rare exceptions) rarely touch 1% let alone 10%
> of
> > the swtiching infrastructure capabilities. Not that there is anything
> wrong
> > with overbuilding if you can afford it. But if you don't have the dough,
> > use
> > what will WORK.
> >
> > Steve Means
> > Security Instructor/Consultant
> > smeans_at_ccbootcamp.com
> > CCBOOTCAMP - A Cisco Learning Partner
> > 877.654.2243 Toll Free
> > +1.702.968.5100 Direct Outside the USA
> > +1.702.446.0357 Fax
> > YES! We take Cisco Learning Credits
> >
> > ________________________________
> >
> > From: Joseph L. Brunner [mailto:joe_at_affirmedsystems.com]
> > Sent: Tue 6/16/2009 9:32 AM
> > To: Radioactive Frog; Steve Means
> > Cc: loopback 99; ccielab_at_groupstudy.com
> > Subject: RE: 3750s in the Core
> >
> >
> >
> > Do you guys all work for the Cisco Sales team?
> >
> > I have NEVER seen nor had an issue with using 3750G's in environments
> even
> > with 100's of users; even in "high bandwidth" environments...
> >
> > I also have clients with Sup-720's and most of them hardly utilize more
> > than
> > 1Gbps or 2Gbps sustained through the "backbone"...
> >
> > When I do 1Gb and 10Gb iSCSI its seldom routed, as larger clients opt for
> > FCIP
> > or 10Gb Metro links for that application (and would not consider iSCSI).
> >
> > The applications most companies use are simply not bandwidth driven...
> and
> > when you consider that the 80/20 model is now 20/80 with 80 being web
> > hosted
> > apps like
> > Salesforce, colo'd Exchange, and netsuite, the bottleneck is always the
> > Internet link, even if you had a stack of 2900XL switches :)
> >
> > Its amazing how little has changed on that front in the United States in
> 10
> > Years... Cogent is a viable option lately, as their network has improved,
> > but
> > many people simply get a few T-1's, do MLPPP and connected to cloud
> hosted
> > servers via very thin protocols like RDP and Citrix ICA...
> >
> > -Joe
> >
> > -----Original Message-----
> > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> > Radioactive Frog
> > Sent: Tuesday, June 16, 2009 12:24 PM
> > To: Steve Means
> > Cc: loopback 99; ccielab_at_groupstudy.com
> > Subject: Re: 3750s in the Core
> >
> > I wouldn't provision 37xx in backbone for more than 100 users :)
> > The reason, these days everyone has got GIG port in their laptop and the
> > software programmers (specially newbies) aren't hesitating developing
> > application which blasts the network !!
> >
> >
> > On Wed, Jun 17, 2009 at 2:05 AM, Steve Means <smeans_at_ccbootcamp.com>
> > wrote:
> >
> > > I've used a 3750 as the primary switch/inter-vlan router for several
> > > small/mid
> > > hotel casinos. Were they truly core switches? They did have a
> connection
> > > back
> > > to a 'real' enterprise core/data center, but the networks were designed
> > to
> > > operate independently if neccessary. (And that happened several times)
> > >
> > > Because of budget restrictions and lack of heavy loads it was the way
> to
> > > go.
> > > Some things to think about:
> > >
> > > Load was mentioned, check it before you go this route.
> > > Redundancy, stackwise or HSRP. Check cost vs a smaller modular switch.
> > > Features, make sure the 3750 will handle everything you want to do. For
> > > smaller networks this is usually not much. :D
> > >
> > > Its not a bad way to go if you have a tight budget, just make sure its
> > > gonna
> > > do everything you want and support future requirements.
> > >
> > > Steve Means
> > > Security Instructor/Consultant
> > > smeans_at_ccbootcamp.com
> > > CCBOOTCAMP - A Cisco Learning Partner
> > > 877.654.2243 Toll Free
> > > +1.702.968.5100 Direct Outside the USA
> > > +1.702.446.0357 Fax
> > > YES! We take Cisco Learning Credits
> > >
> > > ________________________________
> > >
> > > From: nobody_at_groupstudy.com on behalf of loopback 99
> > > Sent: Tue 6/16/2009 4:37 AM
> > > To: ccielab_at_groupstudy.com
> > > Subject: 3750s in the Core
> > >
> > >
> > >
> > > Hi
> > >
> > > Has anyone used or seen 3750's used as core switches ? We are currently
> > > replacing our old obsolete HP switches with Cisco and my Company, like
> > most
> > > at the moment, want to make cost savings. Consequently they don't want
> to
> > > spend money on 4500's in the core but instead want to put stacks of
> 3750s
> > > instead. Are there any major disadvantages apart from the obvious
> > backplane
> > > speed issue that would make this a bad idea ? The proposed topology is
> > the
> > > typical collapsed core/distribution layer with access switches
> connected
> > to
> > > this. It is a medium sized network that will have approx 500 - 600
> users.
> > >
> > > Thanks,
> > >
> > > L.
> > >
> > >
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Received on Wed Jun 17 2009 - 14:15:00 ART