The current Internet architecture is facing serious scaling problems notably in its routing and addressing system. The TCPIIP stack uses the IP address to identify an endpoint host as well as to serve as a network topological locator. Due to the overloaded semantic of the IP address, mobility is not handled efficiently. Several Locator Identity Split proposals have been developed to decouple the actual semantic of the IP address, separating the endpoint identification and locator functions. For all Locator Identity Split protocols to work a mapping infrastructure is required. However most of the defined solutions tend to focus only on part of the problem space, and usually place end-host mobility aside. We believe that the mapping infrastructure would not scale efficiently with a large number of mobile nodes and would contribute to packet losses while the mobile nodes are moving. This thesis proposes a tiered architecture, which divides the mapping infrastructure into a core mapper and an internal mapper, such that it would scale under is a large number of mobile nodes, store and process their mapping records and provide an up-to-date mapping record. The tiered architecture is implemented using the GSE/8+8 rewriting approach. The core mapper uses a Chord DHT and the internal mapper is a hierarchy of routers with storing and rewriting capability. The tiered architecture is simulated in OMNeT++. The performance of the tiered architecture is evaluated by examining the core mapper and the internal mapper separately by simulating two real network scenarios based on the JANET topology and a University wireless network. The core mapper performance is evaluated against the Domain Name Server (DNS), and the internal mapper is evaluated using the end-host mobility provided by the Host based Identity Protocol (HIP).
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:658043 |
| Date | January 2012 |
| Creators | Mungur, Utam Avinash Einstein |
| Publisher | Lancaster University |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
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