Hi all,
here is the summary of GLI-Split. Merry Christmas and a happy new year! Michael Proposal: Global Locator, Local Locator, and Identifier Split (GLI-Split) Key Idea: GLI-Split implements a separation between global routing (in the global Internet outside edge networks) and local routing (inside edge networks) and using global and local locators (GLs, LLs). In addition, a separate static identifier (ID) is used to identify communication endpoints (e.g. nodes or services) independently of any routing information. Locators and IDs are encoded in IPv6 addresses to enable backwards-compatibility with the IPv6 Internet. The higher order bits store either a GL or a LL while the lower order bits contain the ID. A local mapping system maps IDs to LLs and a global mapping system maps IDs to GLs. The full GLI-mode requires nodes with upgraded networking stacks and special GLI-gateways. The GLI-gateways perform stateless locator rewriting in IPv6 addresses with the help of the local and global mapping system. Non-upgraded IPv6 nodes can also be accommodated in GLI-domains since an enhanced DHCP service and GLI-gateways compensate their missing GLI-functionality. This is an important feature for incremental deployability. Gains: The benefits of GLI-Split are * Hierarchical aggregation of routing information in the global Internet through separation of edge and core routing * Provider changes not visible to nodes inside GLI-domains (renumbering not needed) * Rearrangement of subnetworks within edge networks not visible to the outside world (better support of large edge networks) * Transport connections survive both types of changes * Multihoming * Improved traffic engineering for incoming and outgoing traffic * Multipath routing and load balancing for hosts * Improved resilience * Improved mobility support without home agents and triangle routing * Interworking with the classic Internet - without triangle routing over proxy routers - without stateful NAT These benefits are available for upgraded GLI-nodes, but non-upgraded nodes in GLI-domains partially benefit from these advanced features, too. This offers multiple incentives for early adopters and they have the option to migrate their nodes gradually from non-GLI stacks to GLI-stacks. Costs: * Local and global mapping system * Modified DHCP or similar mechanism * GLI-gateways with stateless locator rewriting in IPv6 addresses * Upgraded stacks (only for full GLI-mode) Documentation: GLI is only a theoretical proposal. A protocol simulation has been shown at EuroView 2009. We believe that GLI-Split offers many features and methods that may be reused in a future Internet routing architecture. The full description is available at http://www3.informatik.uni-wuerzburg.de/~menth/Publications/papers/Menth-GLI-Split.pdf -- Dr. Michael Menth, Assistant Professor University of Wuerzburg, Institute of Computer Science Am Hubland, D-97074 Wuerzburg, Germany, room B206 phone: (+49)-931/31-86644 (new), fax: (+49)-931/888-6632 mailto:[email protected] http://www3.informatik.uni-wuerzburg.de/research/ngn _______________________________________________ rrg mailing list [email protected] http://www.irtf.org/mailman/listinfo/rrg
