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A Method of Dynamically Adding Customers in a Web Hosting Infrastructure Without Touching the Core Switches

IP.com Disclosure Number: IPCOM000015616D
Original Publication Date: 2002-Mar-13
Included in the Prior Art Database: 2003-Jun-20
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Abstract

We disclose a method of using Open Shortest Path First (OSPF) routing protocol to dynamically add customers in a web hosting infrastructure. The advantage of this method is that customers may be added without the core switches been touched. A web hosting infrastructure typically consists of core switches and distribution switches as seen in the following diagram. OSPF Area 0 OSPF Area 1 Core-1 Core-2

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  A Method of Dynamically Adding Customers in a Web Hosting Infrastructure Without Touching the Core Switches

   We disclose a method of using Open Shortest Path First (OSPF) routing protocol to dynamically add customers in a web hosting infrastructure. The advantage of this method is that customers may be added without the core switches been touched. A web hosting infrastructure typically consists of core switches and distribution switches as seen in the following diagram.

OSPF Area 0

OSPF Area 1

Core-1 Core-2

Dist-3 Dist-4

Hub-1

Customer -1

Switch-1

Customer -4

Hub-1 Switch-1

Customer -2

Hub-1 Hub-2

Customer -3

The switches on the top of the diagram (Core 1 and Core 2) are the switches that have a direct connection to the internet. Distribution Switches are shown below them and are labelled Dist-3 and Dist-4. These switches can be added as required. Customers may be added (optionally firewalled if necessary) to distribution switches. As new customers are boarded, the subnets that have been assigned to them will be added to the distribution switches. These new subnets will be advertised to the Core switches via OSPF protocols. Thus the core switches can "learn" about the new devices and can start routing packets. With this idea, no human

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intervention or down time is required for loading of modified static routing tables into the core switches.

The advantage of this approach is obvious. The traditio...