More the same as stated above, its a combination of protocols and more still technologies. Transparent set-up is what you seek hence Virtual-IPs, dynamic routing protocols, link bundling, hardware loadbalancers, active-active replication and above all load sharing. From these you can work on the most suitable/scalable design and implementation.

./TheMburu

On Mon, Jul 30, 2012 at 8:15 PM, Jerry <similamg@yahoo.com> wrote:
Easy peasy, get an MPLS provider and have all your customer networks and primary and back up DCs as nodes attached to the MPLS cloud then run a dynamic routing protocol like BGP or EIGRP and do NAT for your server farm so that irrespective of which DC they are nested at they still appear as having the same IP....that means also redistributing your NVI ( NAT Virtual Interface) into the routing protocol and giving it different metric for preference of the primary DC over the backup DC.....caution though,your replication has to be real time so that end users can fail over to the backup DC and continue working like nothing happened.

In short you gotta have a solid BCP plan that encompasses everything from the apps to the DB to the network infrastructure that transports them.

Sent from my iPhone

On Jul 30, 2012, at 15:12, Edwin Ngige <edwinngige@gmail.com> wrote:

> Hi Skunks,
>
> Thinking of a way of giving a redundancies across NOC. I.e If I terminates several links to one location ( ISP Style) with different providers on p2p. Like maybe using the appropriate connection, safaricom Wimax, KDN Fibre, Jamii Fibre, AK Fibre/ Canopy, Kenstream serial/E1 connection name them depending where the customer is.
> Am looking to a way, where I can give a backup, such that NOC1 goes down, NOC2 takes up. Note one requirement is the NOC should be 8 or more Kilometers apart.
> NOC meaning, where all terminates before going out.
>
> Regards,
>
> Edwin Ngige
> 254 722 841853
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