[c-nsp] ASIC to switch port mapping

[Livio Zanol Puppim]

This is a VERY interesting topic. We need to have more attention at buffers
size in our next aquisition. Thanks guy.

2010/9/12 Keegan Holley <keegan.holley at sungard.com>

> You can always buy more switches and move ports.  The 2960 and the hundreds
> of other switches (and blades) just like it is a wiring closet switch for
> the enterprise.  It should be common knowledge (no offense if this is new
> information to you) that they are oversubscribed, have tiny buffers and are
> not suitable for anything but.  The fact is that these switches cost
> anywhere from $800 - $2200 and support is also cheap.  This allows us all
> to
> get all the users and printers connected on the cheap.  4900's, Juniper
> EX's
> and the hundreds of other switches (and blades)that are not oversubscribed,
> have large queues and can switch at line rate are about $4k - $20k.  It may
> actually be cheaper to just buy another 2960 than to upgrade to something
> beefier.  Is this really user traffic?  Is the user actually pushing 1g of
> traffic or are the ASICs just filling up faster than the frames can be
> switched off the buffers? I've never actually seen queues overrun by
> something that wasn't server/enterprise grade.
>
>
>
> On Sun, Sep 12, 2010 at 4:45 PM, Gert Doering <gert at greenie.muc.de> wrote:
>
> > Hi,
> >
> > On Sun, Sep 12, 2010 at 08:41:49PM +0200, Andrew Miehs wrote:
> > > > 2960s are especially prone to drops (esp if mls qos enabled).
> > >
> > > Does this include 2960Gs?
> >
> > Yes.
> >
> > gert
> > --
> > USENET is *not* the non-clickable part of WWW!
> >                                                           //
> > www.muc.de/~gert/ <http://www.muc.de/%7Egert/>
> > Gert Doering - Munich, Germany
> > gert at greenie.muc.de
> > fax: +49-89-35655025
> > gert at net.informatik.tu-muenchen.de
> >
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Lívio Zanol Puppim