Alberto García-Martínez

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Multihoming (i.e., the connection to the Internet through multiple providers), has been widely adopted by Internet sites, mainly to provide fault tolerance. In the multihoming solution currently deployed in the IPv4 Internet, the multihomed site announces a single address block through all its providers using Border Gateway Protocol (BGP). As a result, for(More)
Fourth-generation mobile devices incorporate multiple interfaces with diverse access technologies. The current Mobile IPv6 protocol fails to support the enhanced fault tolerance capabilities that are enabled by the availability of multiple interfaces. In particular, established MIPv6 communications cannot be preserved through outages affecting the home(More)
Ethernet switched networks do not scale appropriately due to limitations inherent to the spanning tree protocol. Ethernet architectures based on routing over a virtual topology in which turns are prohibited offer improved performance over spanning tree, although in some cases suffer from excessive computational complexity. Up/Down routing is a turn(More)
There is ongoing work on the IETF aimed to provide support for different flavors of multihoming configurations, such as SHIM6 for multihomed sites, multiple CoAs support in MIP for multihomed mobile nodes and HIP for multihomed nodes and sites. A critical aspect for all the resulting multihoming protocols is to detect failures and gain information related(More)
We claim that the slow deployment of IPv6 seen so far is related with the complete decoupling with IPv4 regarding to routing and addressing. In this paper we propose Integrated Routing and Addressing (InRA), a new solution to allow IPv6 to integrate with IPv4 routing and addressing in order to decrease management cost during the coexistence period, and(More)
IN the early 1990s it became apparent that the 32-bit address size of the IPv4 protocol would be too small in the long run, so the IETF started work on an updated version of IP with larger addresses, IPv6. Unfortunately, the resulting protocol is not backward compatible with IPv4, so there is a need for tools to allow the transition from IPv4 to IPv6 and(More)
In this note, we propose a security mechanism for protecting IPv6 networks from possible abuses caused by the malicious usage of a multihoming protocol. In the presented approach, each multihomed node is assigned multiple prefixes from its upstream providers, and it creates the interface identifier part of its addresses by incorporating a cryptographic(More)
The availability of two or more connectivity providers (configuration known as multihoming) allows improvements in failure tolerance and enables traffic engineering capabilities. Current IPv4 multihoming solutions suffer from scalability limitations. In this article we present a solution that allow IPv6 networks to benefit from multihoming, taking advantage(More)
In this paper we propose Fast Path Ethernet, an evolution of the transparent bridges learning mechanisms to increase infrastructure utilization for campus and datacenter networks in a simple way. Fast Path Ethernet Switches reuse standard ARP Request and Reply packets to set up fast on-demand paths between hosts. This architecture uses the standard Ethernet(More)