Re: OT:WAN Backbone and Internet in DC

Hey Seyeabimbolu

Thanks mate :)

On Thu, Jan 10, 2013 at 1:12 AM, <seyeabimbolu_at_gmail.com> wrote:

> Hello Routing Freak,
>
> This is not in response to your question. I just noticed your signature
> and want to say congratulation to you!
>
> Enjoy your number!
>
> Regards
>
> Sent from my BlackBerry. smartphone.
>
> -----Original Message-----
> From: Routing Freak <routingfreak_at_gmail.com>
> Sender: nobody_at_groupstudy.com
> Date: Thu, 10 Jan 2013 01:07:38
> To: Cisco certification<ccielab_at_groupstudy.com>
> Reply-To: Routing Freak <routingfreak_at_gmail.com>
> Subject: OT:WAN Backbone and Internet in DC
>
> Hi all
>
> In my customer data centre network, we have primary as well as Disaster
> Recovery site and we have Inter DC links which is the so-called WAN
> Backbone. And we have Internet connectivity from my Edge routers on both
> the Data centers sites to upstream Internet Service Providers
> I dont understand what is the difference between the WAN Backbone and
> Internet in terminologies in documentations.
>
> THis is what my understanding is WAN Backbone is nothing but ur Data centre
> Interconnect technology that u r going inorder to reach other DC site in
> case any links to upstream Providers got lost or else any other issue
> making the traffic.
>
> Why do they call as WAN Backbone? Its just a normal DC Interconnect
> technology where we can use another Service Provider just like a VPN
> connection to reach another site. I probably feel WAN Backbone used in ISP
> Core network where they have large mesh of LSPs to each and every Edge
> devices.
>
> Whereas the original connection from the Edge routers to the upstream ISPs
> are exclusively for the internet routes and not for any DCI or VPN traffic
> from one DC to another DC
>
> In this case when designing the DC sites, we need to have two separate
> service providers . One for the Internet Routes and another for the DC
> interconnect
>
> On what scenarios does the Inter DC links will be used and in what purpose
> it is required ?
>
> I see there are lot of solutions for DC Interconnect ranging from VPLS to
> Layer 3 VPNs over the internet or else plain Layer 3 routing. Which works
> best and i see the "It depends" answer coming !! :)
>
> Can someone throw light on this more.
>
> --
> Regards
> Routing Freak
> CCIE#35889 (SPv3)
>
>
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--
Regards
Routing Freak CCIE#35889 (SPv3)
Blogs and organic groups at http://www.ccie.net