From: Chris Broadway (midatlanticnet@gmail.com)
Date: Wed May 31 2006 - 13:01:10 ART
It sounds to me like your network is the traditional "hub and spoke" and the
DC is at the hub location. I personally would not use OSPF in an
environment like that. I would, and have used, a more flat protocol (ie.
EIGRP) for that implementation.
-Chris
On 5/31/06, CCIEin2006 <ciscocciein2006@gmail.com> wrote:
>
> 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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