From: CCIEin2006 (ciscocciein2006@gmail.com)
Date: Wed May 31 2006 - 11:51:06 ART
Thanks Paul.
But if you make your data center a nssa then any other areas you connect to
the data center will need a virtual link back to area 0, wouldn't it? That
can get quite messy.
Also my definition of data center is the core of the network where all the
servers are as opposed to a branch office where users sit.
On 5/31/06, Bryant, Paul M <paul.m.bryant@uk.verizonbusiness.com> wrote:
>
> I work for large ISP we generally put DC, which has many definitions but
> in many cases it is a location with a few connections but total resilience
> within those connections, we would normally connect these a nssa ( nssa just
> in case we need to redist something in the future). The DC routers just want
> to send data out, quickly so a small routing table is a good idea so I would
> have thought even a nice tidy area 0 would have a bit more information that
> is really needed. But as DC can mean many thing to different people this
> might not be ok for your requirement.
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com<nobody@groupstudy.com>]
> On Behalf Of CCIEin2006
> Sent: 31 May 2006 14:37
> To: Jeff Theunissen
> Cc: Cisco certification
> Subject: Re: OSPF Area Design in Large Networks
>
> Thanks guys.
>
> So if you had two data centers, would you put both data centers in area 0
> or would you use a different area number for each data center?
>
> On 5/30/06, Jeff Theunissen <jhtemail@yahoo.com.au> wrote:
> >
> > I work with a large OSPF Network with over 57'000 clients. This
> > network is a star network utilising area 0 at the core. The sub area's
> > are based on what we call clusters which are the way the sites are
> > brokens down. These clusters are given sections of the IP Address
> > subnetting, this provides a convienient point for summarizing the
> address space.
> >
> > Jeff
> >
> >
> > *CCIEin2006 <ciscocciein2006@gmail.com>* wrote:
> >
> > Hello folks,
> >
> > Being that my OSPF experience is limited to small environments with
> > one area (area 0) I would like to know how big companies do OSPF.
> > For example, when would they decide to create multiple areas?
> > How do they usually assign areas - by geographic area, by department,
> > by function?
> > Are virtual links common practice in the real world?
> >
> > Thanks
> >
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